BM20 | BM25 | BM35 | BF201
PRESENTATION
THIS CATALOGUE CONTAINS THE INFORMATION NEEDED FOR
THE SELECTION AND PROPER USE OF HYDRAULIC DIRECTIONAL
CONTROL VALVES BM20, BM25, BM35 AND BF201 SERIES. THE
DESIGN, MANUFACTURING PROCESS AND CONTROLS MEET THE
RELEVANT EU STANDARDS AND DIRECTIVES ON SAFETY AND
QUALITY. DIRECTIONAL CONTROL VALVES ARE PRODUCED BY BLB.
Before using BM20, BM25, BM35 and BF201 directional control valves, carefully
read this catalogue in all its parts; the proper operation of BLB products is
strictly subjected to the compliance with the directions, instructions, and
specifcations herein stated. Please contact our BLB technical department
in all cases in which the correspondence of the product to the application
requirements is uncertain. Operations and uses that require actions other than
those herein described and/or approved in advance by BLB, may give rise to
defects or failures that exempt BLB from all liabilities.
The proper operation of BM20, BM25, BM35 and BF201, is strictly subjected
to the compliance with the directions, instructions, and specifcations stated
in this catalogue. Operations and uses that require actions other than those
herein described and/or approved in advance by BLB, may give rise to defects
or failures that exempt BLB from all liabilities. To ensure the specifcations given
in the catalogue, make sure that the maximum parameters are not exceeded
during operation. BLB is not liable for any damage that may be caused to people
or property resulting from misuse of the product. Therefore, consult with the
utmost attention the chapter instructions. The catalogue shows the most
common configurations. For more detailed information or special requests
herein not provided, please contact BLB Sales Department. Specifcations,
drawings and descriptions contained in this catalogue refer to the products at
the date of publication of this catalogue. BLB, in a perspective of continuous
product improvement, reserves the right to make changes at any time and
without the obligation of any prior notifcation.
© First Edition May 2021 - BM20, BM25, BM35, BF201
2 | BM20 | BM25 | BM35 | BF201 |
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For over 35 years at BLB we have been designing and manufacturing
directional control valves with passion, supporting our customers
with the study and creation of innovative solutions. BLB Team has
always focused on the search for solutions that allow an easy and convenient update and
improvement of our customers’ applications and systems.
BLB products, all strictly Made in Italy, stand out for their compactness, lightness and
for the high level of standardization and interchangeability of the components. Our
management system is ISO 9001 certied.
Product personalization, quick deliveries, keeping to deadlines as well as the constant
focus on improvement create the true added value of the service provided by BLB which
today, thanks to an ecient network of dealers, is present all over the world.
Company with Certied Quality Management System
Certicate Nº 50 100 11533
| BM20 | BM25 | BM35 | BF201 | 3
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SUMMARY
BM SERIES 6
BM20 8
BM25 9
BM35 10
BF SERIES 12
BF201 / BFV201 14
SPARE PARTS
FLOW CONTROLS AND ACCESSORIES 15
RELIEF VALVES AND ACCESSORIES 17
ACTUATORS 19
SPOOLS 24
SPOOL CONTROLS 30
INLET, OUTLET, PORTS OPTIONS 35
SPECIAL PRODUCTS 36
BB20/3 38
BM20/3 DOUBLE INLET 40
BM35/2 WITH PORTS ANTISHOCK VALVES 42
BM35/7 FOR BACKHOE 44
BM25 ELECTRIC + MANUAL CONTROL 46
BM35 ELECTRIC + MANUAL CONTROL 48
APPLICATIONS 50
PRODUCTS CHOICE AND USE 59
INSTRUCTIONS 61
VALVE INSTALLATION 61
CONFIGURATION CHANGE - SPARE PARTS INSTALLATION 62
MAINTENANCE 67
WARRANTY AND LIABILITY LIMITS 68
4 | BM20 | BM25 | BM35 | BF201 |
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PRODUCTS RANGE
/ 1 / 2 / 3 / 4 / 5 / 6 / 7
BM20
1 to 7 sections
Flow 20 l/min
Ports threads 1/4” BSP / SAE 6
2 Inlet and Outlet ports
Prepared for High pressure Carry Over
(Power Beyond)
BM25
Single section valve
Flow 25 l/min
Ports threads 3/8” BSP / SAE 8
BM35
1 to 7 sections
Flow 35 l/min
Ports threads 3/8” BSP / SAE 8
2 Inlet and Outlet ports
Prepared for High pressure Carry Over
(Power Beyond)
BF201
1 to 5 sections
Flow 20 l/min
Ports threads 1/4” BSP / SAE 6
2 Inlet and Outlet ports
Prepared for High pressure Carry Over
(Power Beyond)
SPECIAL PRODUCTS
BB20/3
Check valves on ports
3 sections
Max Flow 20 l/min
Page 38
BM20/3
Double Inlet
3 sections
Max Flow 25 l/min
Page 40
BM35/2
Ports antishock valves
2 sections
Max ow 35 l/min
Page 42
BM35/7
for backhoe, special RCT spool
7 sections
Max ow 35 l/min
Page 44
BM25
with electric + manual control
Max ow 25 l/min
Page 46
BM35
with electric + manual control
(one section only)
Max ow 25 l/min
Page 48
| BM20 | BM25 | BM35 | BF201 | 5
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PRODUCTS RANGE
/ 1 / 2 / 3 / 4 / 5 / 6 / 7
BM20
1 to 7 sections
Flow 20 l/min
Ports threads 1/4” BSP / SAE 6
2 Inlet and Outlet ports
Prepared for High pressure Carry Over
(Power Beyond)
BM25
Single section valve
Flow 25 l/min
Ports threads 3/8” BSP / SAE 8
BM35
1 to 7 sections
Flow 35 l/min
Ports threads 3/8” BSP / SAE 8
2 Inlet and Outlet ports
Prepared for High pressure Carry Over
(Power Beyond)
BF201
1 to 5 sections
Flow 20 l/min
Ports threads 1/4” BSP / SAE 6
2 Inlet and Outlet ports
Prepared for High pressure Carry Over
(Power Beyond)
SPECIAL PRODUCTS
BB20/3
Check valves on ports
3 sections
Max Flow 20 l/min
Page 38
BM20/3
Double Inlet
3 sections
Max Flow 25 l/min
Page 40
BM35/2
Ports antishock valves
2 sections
Max ow 35 l/min
Page 42
BM35/7
for backhoe, special RCT spool
7 sections
Max ow 35 l/min
Page 44
BM25
with electric + manual control
Max ow 25 l/min
Page 46
BM35
with electric + manual control
(one section only)
Max ow 25 l/min
Page 48
6 | BM20 | BM25 | BM35 | BF201 |
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BM SERIES
GENERAL INFORMATION
Made from a single block of cast iron, BM monoblock valves are sturdy, reliable, compact, lightweight and are characterized by a single body
having following features:
■ Sound construction
■ Compact size
■ Reduced weight
The absence of tie rods and intermediate seals allow monoblock valves to provide:
■ Improved dependability
■ Sturdy valves body for fewer leak points
■ Lower maintenance
WITHOUT RELIEF VALVE STANDARD CLOSED CENTER HIGH PRESSURE CARRY OVER (POWER BEYOND)
P
P2
T
B
A
T2
T
P
P2
T
T2
T
T
B
A
P
T
By
1
0
2
(0)(1) (2)
| BM20 | BM25 | BM35 | BF201 | 7
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DESIGNATION EXAMPLES
BM25 ZB G K (200) | MO C 3 |
VALVE
SUPERFICIAL TREATMENT
THREADS
RELIEF VALVE
VALVE SETTING
P
P2
T
B
A
T2
T
B
P
T
By
0
2
1
(0)(1) (2)
K
INLET
200 bar
OUTLET
OC
C
SPOOL
CONTROL
3
VALVE
Nº SECTIONS
THREADS
RELIEF VALVE
ACTUATOR
ACTUATOR
ACTUATOR
SPOOL
SPOOL
SPOOL
OUTLET OPTION
SPOOL CONTROL
SPOOL CONTROL
SPOOL CONTROL
VALVE SETTING
BM20 | 3 ZB G U (180) | MO B 2 | MO A 1 | MO K 16 | CO
P
P2
T
T2
T
B
A
B
A
B
A
P
T
By
1
0
2
A
P
T
By
1
0
2
B
A
P
T
By
1
0
2
3
B
A
(0)(1) (2)
(2)(0)(1)(3)
(0)(1) (2)
SPOOL
SPOOL
SPOOL
SUPERFICIAL TREATMENT
ACTUATOR
SPOOL
SPOOL CONTROL
8 | BM20 | BM25 | BM35 | BF201 |
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TECHNICAL SPECIFICATIONS
NOMINAL FLOW 17 l/min 4,5 GPM
MAX FLOW 25 l/min 6,6 GPM
MAX PRESSURE ON PORTS A-B 320 bar 4700 PSI
MAX PRESSURE ON TANK LINE 80 bar 1100 PSI
DIMENSION AND WEIGHT
Number
of sections
L I WEIGHT
mm inch mm inch kg lb
BM20/1 81,50 32,09 50,00 1,97 1,83 4,03
BM20/2 111,50 43,90 80,00 3,15 2,67 5,90
BM20/3 141,50 55,71 110,00 4,33 3,51 7,73
BM20/4 171,50 67,52 140,00 5,51 4,38 9,65
BM20/5 201,50 79,33 170,00 6,69 5,60 12,34
BM20/6 231,50 91,14 200,00 7,87 6,71 14,79
BM20/7 261,50 102,95 230,00 9,06 7,97 7,57
STANDARD THREADS
A - B P T P2 T2
G (BSP) 1/4"
1/4"
3/8" 3/8" 3/8"
F (UNF-SAE 6) 9/16"-18 9/16"-18 9/16”-18 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
BM20
TECHNICAL SPECIFICATIONS
PRESSURE DROP
A/B → TP → A/BP → T
P2
T2
17
18
26
19,5
30 30
16,5
25
34
53
16,5
29,5
16
65
9
30
I
L
Nº 2
ø
7
18
52,5
83
34,5
170,5
53
73
15
M8
M8
2
0
1
P
B
A A
B B
A
T
| BM20 | BM25 | BM35 | BF201 | 9
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M8
M8
1
0
2
3
ø
TECHNICAL SPECIFICATIONS
NOMINAL FLOW 25 l/min 6,6 GPM
MAX FLOW 35 l/min 9,2 GPM
MAX PRESSURE ON PORTS 320 bar 4700 PSI
MAX PRESSURE ON TANK LINE 80 bar 1100 PSI
DIMENSION AND WEIGHT
Number
of sections
L I WEIGHT
mm inch mm inch kg lb
BM25 80,00 3,15 50,00 1,97 1,52 3,35
STANDARD THREADS
A - B P2 T2
G (BSP) 3/8" 3/8" 3/8"
F (UNF-SAE 8) 3/4"-16 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
BM25
TECHNICAL SPECIFICATIONS
PRESSURE DROP
A/B → TP → A/BP → T
10 | BM20 | BM25 | BM35 | BF201 |
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TECHNICAL SPECIFICATIONS
NOMINAL FLOW 25 l/min 6,6 GPM
MAX FLOW 35 l/min 9,2 GPM
MAX PRESSURE ON PORTS 320 bar 4700 PSI
MAX PRESSURE ON TANK LINE 80 bar 1100 PSI
STANDARD THREADS
A - B P T P2 T2
G (BSP) 3/8"
3/8"
3/8" 3/8" 3/8"
F (UNF-SAE 8) 3/4"-16 3/4"-16 3/4"-16 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
BM35
TECHNICAL SPECIFICATIONS
A/B → TP → A/BP → T
T2
P2
BB
A A
B
A
B
AA
B
2
0
1
M8
M8
3
53 83
73
34,5
52,5
170,5
18
15
T2
16
53
I
16,5
29,5 16
17,5
16,5
L
19 26 30 30 30 30
34
ø7
30
9
25
Nº 2
65
P
T
DIMENSION AND WEIGHT
Number
of sections
L I WEIGHT
mm inch mm inch kg lb
BM35/1 81,50 32,09 50,00 1,97 1,83 4,03
BM35/2 111,50 43,90 80,00 3,15 2,67 5,90
BM35/3 141,50 55,71 110,00 4,33 3,51 7,73
BM35/4 171,50 67,52 140,00 5,51 4,38 9,65
BM35/5 201,50 79,33 170,00 6,69 5,60 12,34
BM35/6 231,50 91,14 200,00 7,87 6,71 14,79
BM35/7 261,50 102,95 230,00 9,06 7,97 7,57
PRESSURE DROP
| BM20 | BM25 | BM35 | BF201 | 11
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NOTES
12 | BM20 | BM25 | BM35 | BF201 |
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BF SERIES
GENERAL INFORMATION
BF monoblock valves derive from BM series and differ from it for having integrated
in the inlet a three ways adjustable pressure compensated ow control. The
exceeding ow is recuperated into the system and allows the simultaneous
use of two sections, the rst fed by the priority (regulated) ow and the second
fed by the exceeding ow. Non-priority sections get the whole ow when they
are individually operated or just the exceeding ow when a priority section is
operated.
The ow control can be regulated from 0 to the maximum ow rate and starts
working when the rst section is operated.
BF201
/1 /2 /3 /4 /5
Priority
Flow
Element
Exceeding
Flow
Element
WITHOUT RELIEF VALVE STANDARD CLOSED CENTERHIGH PRESSURE CARRY OVER (POWER BEYOND)
P
P2
T
B A B A
T2
T
A
P
T
1
2
A
P
T
1
2
P
P2
T
RVP
T2
T
CCP
T
RVP
INLET
U
INLET
OUTLET
OC
OUTLET
CO
OUTLET
CCP
D
SPOOL
CONTROL
1
A
SPOOL
CONTROL
1
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RELIEF VALVE
SUPERFICIAL TREATMENT
DESIGNATION EXAMPLES
BF201 | 3 ZB G U (180) | MO D 2 | MO A 1 | MO A 1 | CO
P
P2
T
B
A
B
A
B
A
T2
T
B
A
P
T
By
1
0
2
B
A
P
T
By
1
0
2
(0)(1) (2)
(0)(1) (2)
B
A
P
T
By
1
0
2
(0)(1) (2)
VALVE
Nº SECTIONS
VALVE SETTING
SPOOL
SPOOL
THREADS
ACTUATOR
ACTUATOR
SPOOL CONTROL
SPOOL CONTROL
ACTUATOR
SPOOL
SPOOL CONTROL
OUTLET OPTION
14 | BM20 | BM25 | BM35 | BF201 |
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BF201 / BFV201
TECHNICAL SPECIFICATIONS
2
0
1
3
M8
M8
ø
TECHNICAL SPECIFICATIONS
NOMINAL FLOW 17 l/min 4,5 GPM
MAX FLOW 25 l/min 6,6 GPM
MAX PRESSURE ON PORTS 320 bar 4700 PSI
MAX PRESSURE ON TANK LINE 80 bar 1100 PSI
DIMENSION AND WEIGHT
Number
of sections
L I WEIGHT
mm inch mm inch kg lb
BF201/1 107,00 4,21 80,00 3,15 2,49 5,49
BF201/2 136,00 5,35 110,00 4,33 3,35 7,38
BF201/3 166,00 6,54 140,00 5,51 4,45 9,81
BF201/4 196,00 7,72 170,00 6,69 7,60 16,75
BF201/5 226,00 8,90 200,00 7,87 8,30 18,30
STANDARD THREADS
A - B P T P2 T2
G (BSP) 1/4″ 1/4″ 3/8″ 3/8″ 3/8″
F (UNF – SAE 6) 9/16″-18 9/16″-18 3/4″-16 3/4″-16 3/4″-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
0
1
2
3
4
5
6
7
8
9
10
0 10 20 30 40 50 60 70 80
PRESSURE (bar)
FLOW (l/min.)
/5
/4
/3
/2
/1
P
T
1 2 3 4 5
0
2
4
6
8
10
12
14
16
0 10 20 30 40 50 60 70 80
PRESSURE (bar)
FLOW (l/min.)
/5
/4
/3
/2
/1
B
T
A
5 4 3 2 1
0
5
10
15
20
25
30
0 10 20 30 40 50 60 70 80
PRESSURE (bar)
FLOW (l/min.)
/5
/4
/3
/2
/1
P
B
A
1 2 3 4 5
P → T A/B → TP → A/B
PRESSURE DROP
| BM20 | BM25 | BM35 | BF201 | 15
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Horizontal Vertical
SPARE PARTS - FLOW CONTROLS AND ACCESSORIES
VNR - LOAD CHECK VALVE (BF) CODE 560245
Every BLB valve is provided with a load check valve;
it prevents the cylinder fall when a spool is actuated
and the backow from ports to inlet.
VNR - LOAD CHECK VALVE (BFV) CODE 560331
Every BLB valve is provided with a load check valve;
it prevents the cylinder fall when a spool is actuated
and the back ow from ports to inlet.
FLOW CONTROL CARTRIDGE (BF)
CODE 832061
Flow control cartridge complete with handle. Allows
the regulation from 0 to maximum ow rate.
FLOW CONTROL CARTRIDGE WITHOUT KNOB (BF)
CODE 832074
FLOW CONTROL CARTRIDGE (BFV)
CODE 832098
16 | BM20 | BM25 | BM35 | BF201 |
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FLOW CONTROL CARTRIDGE WITHOUT KNOB (BFV)
CODE 832057
FLOW CONTROL STANDARD KNOB (BF+BFV)
CODE 560411
LONG FLOW CONTROL KNOB (BF)
CODE 561370
| BM20 | BM25 | BM35 | BF201 | 17
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0
20
40
60
80
100
120
10 15 20 25 30
PRESSIONE
PORTATA
90 bar
40 bar
0
50
100
150
200
250
300
350
10 15 20 25 30
PRESSIONE
PORTATA
130 bar
300 bar
0
50
100
150
200
250
300
10 15 20 25 30
PRESSIONE
PORTATA
100 bar
0
10
20
30
40
50
60
70
80
90
100
10 15 20 25 30 35 40
PRESSIONE
PORTATA
90 bar
40 bar
0
50
100
150
200
250
300
350
10 15 20 25 30 35 40
PRESSIONE
PORTATA
300 bar
130 bar
0
50
100
150
200
250
300
10 15 20 25 30 35 40
PRESSIONE
PORTATA
100 bar
250 bar
SPARE PARTS - RELIEF VALVES AND ACCESSORIES
T
P2
B
A
P
BBB
AAA
T2
RELIEF VALVE VL20 PRESSURE DROP
RELIEF VALVE VL25 PRESSURE DROP
X U K
X U K
A/B → T
A/B → T
P → A/B
P → A/B
P → T
P → T
18 | BM20 | BM25 | BM35 | BF201 |
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VL20 | VL25 - RELIEF VALVE
CODES
Main relief valve VL20 and VL25; control the maximum
pressure in the equipment.
Both VL are adjustable and available with 3 elds of
setting.
X: Pressure Range 30 ÷ 90 bar - STANDARD SETTING 70 bar
U: Pressure Range 80 ÷ 230 bar - STANDARD SETTING 140 bar
K: Pressure Range 150 ÷ 300 bar - STANDARD SETTING 180 bar
B: Prearranged for lock kit
Standard setting is based on a pre-set ow of 8 l/min
803033 - RELIEF VALVE “VL20 XB”
803108 - RELIEF VALVE “VL20 UB”
803035 - RELIEF VALVE “VL20 KB”
80311004 - RELIEF VALVE “VL25 XB”
803180 - RELIEF VALVE “VL25 UB”
80311009 - RELIEF VALVE “VL25 KB”
SPRINGS RELIEF VALVE VL20 | VL25
CODES
Springs for main relief valve VL20 and VL25 for the
different elds of setting.
200041 - SPRING “X” VL20 (30 ÷ 90 BAR)
200068 - SPRING “U” VL20 (80 ÷ 230 BAR)
200069 - SPRING “K” VL20 (150 ÷ 300 BAR)
200167 - SPRING “X” VL25 (30 ÷ 90 BAR)
200168 - SPRING “U” VL25 (80 ÷ 230 BAR)
200169 - SPRING “K” VL25 (150 ÷ 300 BAR)
VNR - LOAD CHECK VALVE CODE 560161
Every BLB valve is provided with a load check valve. It
prevents the cylinder fall when a spool is actuated and
does not allow the back ow from ports to inlet.
RVP - RELIEF VALVE PLUG CODE 832018
RVP
Replaces the relief valve in closed center systems (i.e.
John Deere tractors), in circuits where an in-line relief
valve is provided or in case of two valves connected
downstream by means of a carry over (power beyond).
PB - RELIEF VALVE LOCK PLUG CODE 020027
Applied to VL20 and VL25 predisposed (XB, UB, KB)
prevents users alteration of the prearranged relief
valve setting.
| BM20 | BM25 | BM35 | BF201 | 19
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SPARE PARTS - ACTUATORS
C
D
A
B
2
0
1
2
0
1
2
0
1
IN STANDARD CONFIGURATION THE ACTUATOR ORIENTATION IS
“A” IF NOT DIFFERENTLY REQUESTED
21
0
AB
MO - MANUAL CONTROL WITH LEVER CODE 801017
Possibility to assembly the lever in vertical or horizontal
position. Possibility to assembly the entire manual
control in position A (90°) or C (180°).
MW - MANUAL CONTROL WITHOUT LEVER CODE 801025
MC - MANUAL CONTROL WITH CAM CODE 801029
Manual control with the addition of a cam; generally
used to mechanically bring the spool back in position 0
automatically.
20 | BM20 | BM25 | BM35 | BF201 |
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MCW - MANUAL CONTROL WITH CAM WITHOUT LEVER CODE 801073
ML - MANUAL CONTROL WITH LIMITER CODE 801167
Manual control with the addition af a stroke limiter.
MLW - MANUAL CONTROL WITH LIMITER WITHOUT LEVER CODE 801169
LEVERS FOR MANUAL CONTROL CODES
561028 - KIT LEVER M8X105
560570 - KIT LEVER M8X120
560025 - KIT LEVER M8X160 (STANDARD)
560537 - KIT LEVER M8X190
RED LEVERS FOR MANUAL CONTROL CODES
560682 - KIT RED LEVER M8X120
560688 - KIT RED LEVER M8X160 (STANDARD)
56111144 - KIT RED LEVER M8X190
561271 - KIT RED LEVER M8X210
DO - CAM CONTROL CODE 801155
Cam mechanical control; used to mechanically operate
the spool when pushed.
MX - MANUAL CONTROL WITH SAFETY LEVER - VERTICAL CODE 801174
The lever can be actuated only after the mechanical
security system is released. It can be combined with
other actuators in other sections.
| BM20 | BM25 | BM35 | BF201 | 21
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MXO - MANUAL CONTROL WITH SAFETY LEVER - HORIZONTAL CODE 801201
JS(1) - MECHANICAL JOYSTICK CONTROL WITH LEVER CODE 801304
B2
P
A2
A1
B1
A1B1
A2
B2
T
Operates two spools with one lever.
Spools can be operated indipendently
(with lever movments as per scheme)
or simultaneously (with lever cross
movement). Joystick requires to
be assembled with spools without
appendix.
JS(2) - MECHANICAL JOYSTICK CONTROL WITH LEVER CODE 801306
B1
P
A1
A2
B2
A1 B1 A2 B2
T
Operates two spools with one lever.
Spools can be operated indipendently
(with lever movments as per scheme)
or simultaneously (with lever cross
movement). Joystick requires to
be assembled with spools without
appendix.
LEVER FOR JS CONTROL CODE 560027 (M10 X 213)
Standard lever for joystick.
LEVER WITH SPHERICAL KNOB FOR JS CONTROL CODE 56111092 (M10 X 220)
LEVER FOR JS WITH ELECTRIC HANDLE 2 SWITCHES CODE 561113 (M10 X 346)
The switches on the handle allows the operation of
external electric devices.
22 | BM20 | BM25 | BM35 | BF201 |
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ELECTRIC HANDLE 2 SWITCHES
CODE 020047
The switches on the handle allows the operation of
external electric devices.
FO - MANUAL CONTROL FOR CABLE WITH LEVER CODE 801329
Modular single lever for cable remote control. To be
assembled with exible cables.
FA DX - MANUAL CONTROL FOR CABLE WITH ANTIREVERSE LOCK (RIGHT) WITH LEVER CODE 801332
Modular single lever with antireverse lock. Allows to
reverse the operation only when the lock system is
released. To be assembled with exible cables for the
actuation of bidirectional motors.
FA SX - MANUAL CONTROL FOR CABLE WITH ANTIREVERSE LOCK (LEFT) WITH LEVER CODE 801336
Modular single lever with antireverse lock. Allows to
reverse the operation only when the lock system is
released. To be assembled with exible cables for the
actuation of bidirectional motors.
FJ(1) - MECHANICAL JOYSTICK CONTROL FOR CABLES WITH LEVER CODE 801297
B2
A2
A1
B1
P
T
A1
B1
A2
B2
Operates 2 spools with one handle,
through exible cables. Spools can
be operated indipendently (with
lever movments as per scheme)
or simultaneously (with lever cross
movement). To be used with exible
cables.
FJ(2) - MECHANICAL JOYSTICK CONTROL FOR CABLES WITH LEVER CODE 801298
A1
A2
B2
B1
P
T
A1
B1
A2
B2
Operates 2 spools with one handle,
through exible cables. Spools can
be operated indipendently (with
lever movments as per scheme)
or simultaneously (with lever cross
movement). To be used with exible
cables.
| BM20 | BM25 | BM35 | BF201 | 23
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BKO - BRACKETS FOR FO MANUAL CONTROL CODE 560900
Allow to connect the FO remote control levers.
561144 - STAFFE BKO/1
561145 - STAFFE BKO/2
561146 - STAFFE BKO/3
561147 - STAFFE BKO/4
561148 - STAFFE BKO/5
561149 - STAFFE BKO/6
561150 - STAFFE BKO/7
561151 - STAFFE BKO/8
BKA - BRACKETS FOR FA MANUAL CONTROL CODE 561153
Used to put together FO and FA remote control levers.
561152 - BRACKET BKA/1
561153 - BRACKET BKA/2
561154 - BRACKET BKA/3
561143 - BRACKET BKA/4
561155 - BRACKET BKA/5
561156 - BRACKET BKA/6
561157 - BRACKET BKA/7
561158 - BRACKET BKA/8
FL - CABLE ADAPTER CODE 801330
Allows the assembly of exible cables on the valve (lever
side).
SPOOL CONTROL 1F CODE 802132
0
1
2
(0)(1) (2)
Allows the spool to move in position 1 and 2 by pushing
and pulling the lever: spool goes back to position 0
when the handle is released (spring return). Integrates
the connection kit to exible cable remote control
(spool control side).
CA - CABLES FOR REMOTE CONTROL
CODES
023038 - LENGTH = 0,5 m
023087 - LENGTH = 1,0 m
023088 - LENGTH = 1,5 m
023089 - LENGTH = 2,0 m
023090 - LENGTH = 2,5 m
023091 - LENGTH = 3,0 m
023092 - LENGTH = 3,5 m
023093 - LENGTH = 4,0 m
24 | BM20 | BM25 | BM35 | BF201 |
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SPARE PARTS - SPOOLS
2
0
1
2
0
1
2
0
1
21
0
AB
A/B = Ports
By = Bypass
P = Pressure
T = Tank
SPOOL A CODE 560075
B
A
P
T
By
1
0
2
Double acting spool.
Used to control of double acting cylinders or bi-
directional hydraulic motors. In position 0 work ports
are blocked.
SPOOL A DX CODE 560085
B
A
P
T
By
1
0
2
Same features as spool A; used in valves with right inlet
conguration.
SPOOL A WITHOUT APPENDIX CODE 560458
B
A
P
T
By
1
0
2
Same features as spool A with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
| BM20 | BM25 | BM35 | BF201 | 25
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SPOOL B CODE 560076
B
A
P
T
By
1
0
2
Single acting spool.
Used to control single-acting cylinders or start and stop
of uni-directional hydraulic motors.
In position 0 work port A is blocked. B port is plugged.
SPOOL B DX CODE 560086
B
A
P
T
By
1
0
2
Same features as spool B; used in valves with right inlet
conguration.
SPOOL B WITHOUT APPENDIX CODE 560459
B
A
P
T
By
1
0
2
Same features as spool B with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
SPOOL C CODE 560077
B
P
T
By
0
2
1
Single acting spool.
Used to control single-acting cylinders or start and stop
of unidirectional hydraulic motors.
In position 0 work port B is blocked.
A port is plugged.
SPOOL C DX CODE 561249
B
P
T
By
0
2
1
Same features as spool C; used in valves with right inlet
conguration.
SPOOL C WITHOUT APPENDIX CODE 560627
B
P
T
By
0
2
1
Same features as spool C with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
26 | BM20 | BM25 | BM35 | BF201 |
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SPOOL D CODE 560078
B
A
P
T
By
1
0
2
Open center motor spool.
Used to control double acting cylinders or bi-directional
hydraulic motors. Allows a cylinder to oat or a motor
to wheel free when the spool is in position 0. When the
spool is in position 0 work ports are open to the tank.
SPOOL D DX CODE 560087
B
A
P
T
By
1
0
2
Same features as spool D; used in valves with right inlet
conguration.
SPOOL D WITHOUT APPENDIX CODE 560460
B
A
P
T
By
1
0
2
Same features as spool D with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
SPOOL E CODE 560079
B
A
P
T
By
1
0
2
Double acting spool.
In position 0 work port B is connected to the tank.
SPOOL E DX CODE 56111111
B
A
P
T
By
1
0
2
Same features as spool E; used in valves with right inlet
conguration.
SPOOL E WITHOUT APPENDIX CODE 561337
B
A
P
T
By
1
0
2
Same features as spool E with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
| BM20 | BM25 | BM35 | BF201 | 27
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SPOOL F CODE 560080
B
A
P
T
By
1
0
2
Double acting spool.
In position 0 work port A is connected to the tank.
SPOOL F DX CODE 560089
B
A
P
T
By
1
0
2
Same features as spool F; used in valves with right inlet
conguration.
SPOOL F WITHOUT APPENDIX CODE 561346
B
A
P
T
By
1
0
2
Same features as spool F with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
SPOOL K CODE 560081
B
A
P
T
By
1
0
2
3
Double acting, oating spool.
Double acting spool with a fourth oating position.
Allows a cylinder to oat or a motor to wheel free when
the spool is in position 3. To be combined only with
spool controls 16 or 54.
Special machining on the body is required.
SPOOL K WITHOUT APPENDIX CODE 560420
B
A
P
T
By
1
0
2
3
Same features as spool K with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
28 | BM20 | BM25 | BM35 | BF201 |
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SPOOL M CODE 560082
B
A
P
T
By
1
0
2
Double acting closed center spool.
Used in a closed center system (for example John
Deere circuit).
SPOOL M DX CODE 560090
B
A
P
T
By
1
0
2
Same features as spool M; used in valves with right
inlet conguration.
SPOOL M WITHOUT APPENDIX CODE 560948
B
A
P
T
By
1
0
2
Same features as spool M with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
SPOOL R CODE 560469
B
A
P
T
By
1
0
2
Double acting regenerative spool in position 2.
The regenerative circuit allows the double-acting
cylinder to increase its speed, in one way only, adding
to the pump ow the oil returning from the rod
chamber of the cylinder. Special machining on the body
is required.
SPOOL Y CODE 560084
B
A
P
T
By
1
0
2
Double acting motor spool.
Used to control bi-directional motors. Neutral position
is in position 1. Special machining on the body is
required.
| BM20 | BM25 | BM35 | BF201 | 29
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NOTES
30 | BM20 | BM25 | BM35 | BF201 |
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SPARE PARTS - SPOOL CONTROLS
SPOOL CONTROL 1 CODE 802049
0
1
2
(0)(1) (2)
Spring return.
Allows the spool to move in position 1 and 2 by
pushing or pulling the lever: spool goes back to
position 0 when the handle is released.
SPOOL CONTROL 55 CODE 802101
0
1
2
(0)(1) (2)
Same features of spool control 1; to be combined
only with spool C.
SPOOL CONTROL 2 CODE 802051
0
1
2
(0)(1) (2)
Detent in position 1.
When the lever is pushed in position 1 the spool
is detented; from position 2 spool automatically
goes back to position 0 when the lever is released
(spring return).
2
0
1
2
0
1
2
0
1
2
1
0
AB
POSITION 0: P → T
POSITION 1: P → B
POSITION 2: P → A
1 0 2
1
0
2
| BM20 | BM25 | BM35 | BF201 | 31
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SPOOL CONTROL 56 CODE 802111
0
1
2
(0)(1) (2)
Same features of spool control 2; to be combined
only with spool C.
SPOOL CONTROL 3 CODE 802052
0
1
2
(0)(1) (2)
Detent in position 2.
When the lever is pulled in position 2 the spool
is detented; from position 1 spool automatically
goes back to position 0 when the lever is released
(spring return).
SPOOL CONTROL 57 CODE 802154
0
1
2
(0)(1) (2)
Same features of spool control 3; to be combined
only with spool C.
SPOOL CONTROL 4 CODE 802057
(0) (2)
0
2
Spring return, two positions.
Allows the spool to move only in position 0 and 2:
spool goes back to position 0 when the handle is
released (spring return).
SPOOL CONTROL 5 CODE 802058
1
0
(1) (0)
Spring return, two positions.
Allows the spool to move only in position 0 and 1:
spool goes back to position 0 when the handle is
released (spring return).
SPOOL CONTROL 6 CODE 802059
2
1
0
(2)(1) (0)
In starting position, spool is in position 1.
Pulling the lever spool passes through position 0
and gets to position 2.
32 | BM20 | BM25 | BM35 | BF201 |
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SPOOL CONTROL 7 CODE 802060
0
1
2
(2)(1) (0)
In starting position, spool is in position 2.
Pushing the lever spool passes through position
0 and gets to position 1.
SPOOL CONTROL 8 CODE 802050
(0)(1) (2)
0
1
2
Three position detent.
Spool is detented in all positions: 0, 1 and 2.
SPOOL CONTROL 9 CODE 802085
1
0
(0)(1)
Two position detent.
Spool is detented in all positions: 0 and 1.
SPOOL CONTROL 10 CODE 802086
0
2
(2)(0)
Two position detent.
Spool is detented in all positions: 0 and 2.
SPOOL CONTROL 11 CODE 802089
0
1
2
(0)(1) (2)
Spool is detented in positions 1 and 2.
SPOOL CONTROL 13 CODE 802082
0
1
2
3
(3)(2)(0)(1)
Four position detent.
The spool is detented in all positions: 0,1,2, and
3. To be combined only with spool K and special
machining on the body.
| BM20 | BM25 | BM35 | BF201 | 33
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SPOOL CONTROL 16 CODE 802061
1
0
2
3
(2)(0)(1)(3)
Four position, detent in position 3.
The spool returns to 0 from positions 1 and
2 when the handle is released. Position 3 is
detented. To be combined only with spool K and
special machining on the body.
SPOOL CONTROL 1L CODE 802261
0
1
2
(0)(1) (2)
Spring return with limiter.
Spool control 1 with featuring a stoke limiter.
SPOOL CONTROL 1MS0-55MS0
CODES
L S
Spring return with microswitch.
Spool control 1 featuring waterproof microswitch
operating in position 1 and 2.
802173 - SPOOL CONTROL 1MS0
To be combined only with spool C
802294 - SPOOL CONTROL 55MS0
SPOOL CONTROL 1MS1-55MS1
CODES
L S
Spring return with microswitch.
Spool control 1 featuring waterproof microswitch
operating in position 1.
802174 - SPOOL CONTROL 1MS1
To be combined only with spool C
802303 - SPOOL CONTROL 55MS1
SPOOL CONTROL 1MS2 CODE 802175
0
1
2
L S
Spring return with microswitch.
Spool control 1 featuring a waterproof
microswitch operating in positions 2.
SPOOL CONTROL 1MSP0 CODE 802341
L S
Spring return with microswitch.
Spool control 1 featuring a protective microswitch
operating in positions 1 and 2.
34 | BM20 | BM25 | BM35 | BF201 |
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SPOOL CONTROL 1MSP1 CODE 802345
L S
Spring return with microswitch.
Spool control 1 featuring a protective microswitch
operating in positions 1.
SPOOL CONTROL 1MSP2 CODE 802346
0
1
2
L S
Spring return with microswitch.
Spool control 1 featuring a protective microswitch
operating in positions 2.
SPOOL CONTROL 1MSP (1-2) CODE 802408
Spring return with microswitch.
Spool control 1 featuring two protective
microswitches operating in positions 1 and 2.
SPOOL CONTROL 1DC CODE 802109
0
1
2
(0)(1) (2)
Spring return with pin.
Spool control 1 featuring a threaded pin end
which allows, in addition to the actuator, the
operation of the spool also from the spool
control side.
SPOOL CONTROL 1F CODE 802132
0
1
2
(0)(1) (2)
Spring return for cable control.
Spool control 1 featuring a connection kitto cable
remote control. To be assembled with exible
cable CA and manual control FO and FA.
| BM20 | BM25 | BM35 | BF201 | 35
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CO - CARRY OVER (POWER BEYOND)
CODES
Allows the installation of another valve downstream the
rst. To be assembled on T2 port.
832019 - RACCORDO “CO” 20
832032 - TAPPO “CO” 3/4”-16 UNF 20
CCP - CLOSED CENTER PLUG
CODES
Turns an open center circuit into a closed center one.
832017 - CCP 3/8” GAS BM20 BC20
832033 - TAPPO “CCP” 3/4”-16 UNF 20
It is necessary to substitute the main relief valve VL with
an RVP plug.
PLUGS
CODES
015008 - PLUG 3/8’’ BSP
015009 - PLUG 1/4’’ BSP
015002 - PLUG 9/16’’-18
015003 - PLUG 3/4’’-16
P
A
CCPT2T
B
P2
CO
SPARE PARTS - INLET, OUTLET, PORTS OPTIONS
36 | BM20 | BM25 | BM35 | BF201 |
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SPECIAL PRODUCTS
Studying and perfecting equipment solutions has always been the
ideal testing ground for our Development Team and our projects.
Over the years BLB has placed special emphasis on the improvement
of performances, ergonomics and simplifying systems, all with
regards to the environment and the resources savings. Here are a few
examples special products and their application in the major elds.
| BM20 | BM25 | BM35 | BF201 | 37
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38 | BM20 | BM25 | BM35 | BF201 |
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TECHNICAL SPECIFICATIONS
NOMINAL FLOW 17 l/min 4,5 GPM
MAX FLOW 25 l/min 6,6 GPM
MAX PRESSURE ON TANK LINE 80 bar 1000 PSI
STANDARD THREADS
A - B P T P2 T2
G (BSP) 1/4"
1/4"
1/4" 3/8" 3/8"
F (UNF-SAE 8) 3/4"-16 3/4"-16 3/4"-16 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
BB20/3
BY
BY
BY
T
T2
P
P2
T
3
P
T
A
B
0 21
B
A A
B
1 20
B
A
T
P
3
A
B
1 20
B
A
T
P
U
OUTLET
OC
INLET
U
150 bar
SPOOL
CONTROL
K
54
VAS/VL N/A
--
VAS
35 bar
SPOOL
CONTROL
K
54
VAS/VL N/A
--
VAS/VL N/A
--
SPOOL
CONTROL
A
1
VAS/VL N/A
--
VAS/VL N/A
--
Three section monoblock valve with possibility to integrate pilot operated check valves on A ports. Available spools: double acting, single
acting and oating.
A
P
T
By
1
2
3 0
VBM
VBM - Pilot operated check valve for double acting section.
DIMENSION AND WEIGHT
L I WEIGHT
mm inch mm inch kg lb
141,50 5,57 110,00 4,33 5,32 11,73
SPECIAL PRODUCTS
3
1
0
2
L
65
I
N°2
ø7
17,5 30
25
59
30
20
26 30
P2
T2
B
A A
B
A
B
P
T
T2
67 22
73
25 83 34,5
176,5
I = 110
L = 140
Kg = 5,32
| BM20 | BM25 | BM35 | BF201 | 39
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SPECIFIC SPARE PART LIST
Ideal application: street sweepers and lawn mowers.
SPECIAL PRODUCTS
VBM - PILOT OPERATED CHECK VALVE CODE 561205
Allows 0 leakage on port A.
SPOOL AV CODE 560881
B
A
P
T
By
1
0
2
Double acting spool.
Used to control of double acting cylinders or bi-
directional hydraulic motors. In position 0 work ports
are blocked.
SPOOL BV CODE 560541
B
A
P
T
By
1
0
2
Single acting spool.
Used to control single-acting cylinders or start and stop of
uni-directional hydraulic motors. In position 0 work port A
is blocked. B port is plugged.
SPOOL DV CODE 560540
B
A
P
T
By
1
0
2
Open center motor spool. Used to control double acting
cylinders or bi-directional hydraulic motors. Allows a cylinder to
oat or a motor to wheel free when the spool is in position 0.
When the spool is in position 0 work ports are open to the tank.
SPOOL KV CODE 56111175
B
A
P
T
By
1
0
2
3
Double acting, oating spool. Double acting spool with a fourth
oating position. Allows a cylinder to oat or a motor to wheel
free when the spool is in position 3. To be combined only with
spool control 54. Special machining on the body is required.
SPOOL CONTROL 54 CODE 802437
3
2
0
1
(3) (1) (0) (2)
Four position, detent in position 3.
The spool returns to 0 from positions 1 and 2 when
the handle is released. Position 3 is detented. To be
combined only with spool K and special machining on
the body.
40 | BM20 | BM25 | BM35 | BF201 |
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BM20/3 DOUBLE INLET
TECHNICAL SPECIFICATIONS
NOMINAL FLOW 17 l/min 4,5 GPM
MAX FLOW 25 l/min 6,6 GPM
MAX PRESSURE ON TANK LINE 25 bar 362 PSI
STANDARD THREADS
A - B P T P2 T2
G (BSP) 1/4" 1/4” 1/4” 3/8" 3/8"
F (UNF-SAE 8) 3/4"-16 3/4"-16 3/4"-16 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
B A
P
T
By
1
0
2
P2
B A
P
T
By
1
0
2
B A B A
B A
P
T
By
1
0
2
OUTLET
OC
P
P1
T
B A
Three section monoblock valve used to control two pumps for driving the tracks on mini transporter and a single-acting or double-acting
cylinder.
SPECIAL PRODUCTS
DIMENSION AND WEIGHT
L I WEIGHT
mm inch mm inch kg lb
140,00 5,52 110,00 4,33 5,32 11,73
I
65
28
L
30
N°2
ø
7
17,5
17,5
25
45,5
30
9
16 16,5
16,5
P1
P2
T
P
B
A
BB
AA
83 25
34,5
52,5
163
M8
M8
73
2
0
1
I = 110
L = 141,5
Kg = 3,83
| BM20 | BM25 | BM35 | BF201 | 41
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Ideal application: mini transporter with two tracks and tipper.
SPECIAL PRODUCTS
SPECIFIC SPARE PART LIST
VNR - VERTICAL LOAD CHECK VALVE CODE 560559
Every BLB valve is provided with a load check valve.
It prevents the cylinder fall when a spool is actuated
and does not allow the back ow from ports to inlet.
42 | BM20 | BM25 | BM35 | BF201 |
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30
I
16,5
19 30
N°2
ø7
28
65
50
16,5
L
16
25
53
18,5
15
72,8
83
170,5
53,5
M8
M8
3
1
0
2
BM35/2 WITH PORTS ANTISHOCK VALVES
TECHNICAL SPECIFICATIONS
NOMINAL FLOW 25 l/min 6,6 GPM
MAX FLOW 35 l/min 9,2 GPM
MAX PRESSURE ON PORTS 320 bar 4700 PSI
MAX PRESSURE ON TANK LINE 80 bar 1100 PSI
STANDARD THREADS
A - B P T P2 T2
G (BSP) 3/8"
3/8"
3/8" 3/8" 3/8"
F (UNF-SAE 8) 3/4"-16 3/4"-16 3/4"-16 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
T2
T
SPOOL
SPOOL
(0)(1) (2)
B
A
B
A
P
P2
T
OUTLET
OC
B
A
P
T
By
1
0
2
(0)(1)(3) (2)
B A
P
T
By
1
0
2
3
Two sections monoblock valve with oating section, main relief valve, check valves on each section and antishock valve on one port.
The integrated valves allow the simultaneous actuation of the cylinders.
SPECIAL PRODUCTS
DIMENSION AND WEIGHT
L I WEIGHT
mm inch mm inch kg lb
111,50 4,39 80,00 3,15 3,00 6,61
| BM20 | BM25 | BM35 | BF201 | 43
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Ideal application: small front loaders.
SPECIAL PRODUCTS
SPECIFIC SPARE PART LIST
VNR - LOAD CHECK VALVE CODE 560761
Every BLB valve is provided with a load check valve. It
prevents the cylinder fall when a spool is actuated and
does not allow the back ow from ports to inlet.
44 | BM20 | BM25 | BM35 | BF201 |
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BM35/7 FOR BACKHOE
TECHNICAL SPECIFICATIONS
NOMINAL FLOW 25 l/min 6,6 GPM
MAX FLOW 35 l/min 9,2 GPM
MAX PRESSURE ON PORTS 320 bar 4700 PSI
MAX PRESSURE ON TANK LINE 80 bar 1100 PSI
STANDARD THREADS
A - B P T P2 T2
G (BSP) 3/8"
3/8"
3/8" 3/8" 3/8"
F (UNF-SAE 8) 3/4"-16 3/4"-16 3/4"-16 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
I
L
N°2
ø7
3030 30 30 30 3026
1616
29,5
30
965
17,5
16,516,5
T2
T
B
P
P2
A
BBBBBB
AAAAAA
63
18
2583105
213
73
M8
M8
1
0
2
Seven sections monoblock valve, complete with main relief valve, two mechanical joysticks to control four cylinders and two standard
manual control for stabilizer cylinders. Featuring RCT spool for the side shift hydraulic control.
SPECIAL PRODUCTS
T
0
1
(2)(0)
T
1
0
T
T
1
0
T
1
0
T
1
0
T
1
0
T
1
0
11
10
1
INLET
U
180 bar
1
T
11
DIMENSION AND WEIGHT
L I WEIGHT
mm inch mm inch kg lb
261,50 10,29 230,00 9,06 17,30 38,14
| BM20 | BM25 | BM35 | BF201 | 45
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Ideal application: backhoe.
SPECIAL PRODUCTS
SPECIFIC SPARE PART LIST
SPOOL RCT CODE 561345
B A
P T
0
Specic spool for side shift hydraulic control.
SPOOL A(8)-(12)-(18)
CODES
B
A
P
T
By
1
0
2
Double acting spool for specic ow rates.
Used to control of double acting cylinders or bi-
directional hydraulic motors. In position 0 work ports
are blocked.
561253 - SPOOL A(8)
561238 - SPOOL A(12)
561362 - SPOOL A(18)
SPOOL A(8)-(12)-(18) WITHOUT APPENDIX
CODES
B
A
P
T
By
1
0
2
Same features as spool A with threaded spool end;
required to assembly joysticks (JS) or for special
applications.
561251 - SPOOL A(8) WITHOUT APPENDIX
561239 - SPOOL A(12) WITHOUT APPENDIX
561263 - SPOOL A(18) WITHOUT APPENDIX
46 | BM20 | BM25 | BM35 | BF201 |
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BM25 ELECTRIC + MANUAL CONTROL
TECHNICAL SPECIFICATIONS
MAX FLOW - Electrical control 25 l/min 6,6 PSI
MAX PRESSURE - Electrical control 200 bar 2900 PSI
MAX PRESSURE ON PORTS 200 bar 2900 PSI
MAX PRESSURE ON TANK LINE 25 bar 362 PSI
STANDARD THREADS
A - B P T P2 T2
G (BSP) 3/8"
3/8"
3/8" 3/8" 3/8"
F (UNF-SAE 8) 3/4"-16 3/4"-16 3/4"-16 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
65
I
29,5
L
16
9
37,5
9
N°2
ø
7
34
P2
T2
T2
66 83
279
130
53
68
112
B
A
I = 50
L = 80
Kg = 1,63
P
P2
T
B
A
P
T
By
1
0
2
OUTLET
OC
AE
SPOOL
CONTROL
EDO
U
INLET
B
A
T2
T
Single section monoblock valve with electric + manual control. Useful in all those applications that need a remote electric operation and
safety manual control.
SPECIAL PRODUCTS
DIMENSION AND WEIGHT
L I WEIGHT
mm inch mm inch kg lb
81,00 3,18 50,00 1,97 1,61 3,55
| BM20 | BM25 | BM35 | BF201 | 47
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Ideal application: hydraulic winch.
SPECIAL PRODUCTS
SPECIFIC SPARE PART LIST
MANUAL CONTROL KIT CODE 560985
Manual control with lever to be combined with electic
control.
ELECTRIC CONTROL EDO 12/24 VOLT
CODES
Electric actuator 12/24 Volt to be combined with
specic manual control kit. Connector not included.
56111105 - ELECTRIC CONTROL EDO 12 VOLT
56111141 - ELECTRIC CONTROL EDO 24 VOLT
ELECTRIC + MANUAL CONTROL 12/24 C CODES
Complete kit electric + manual control. Connector included.
801521 - ELECTRIC + MANUAL CONTROL 12C
801527 - ELECTRIC + MANUAL CONTROL 24C
EDO SOLENOID - 12 /24 VOLT
CODES
Connector not included.
025117 - EDO SOLENOID 12 VOLT
025119 - EDO SOLENOID 24 VOLT
CONNECTOR FOR ELECTRIC CONTROL
CODE 025045
SPOOL AE CODE 56111106
B
A
P
T
By
1
0
2
Double acting spool to be combined with electric control.
Used to control of double acting cylinders or bi-directional
hydraulic motors. In position 0 work ports are blocked.
SPOOL BE CODE 56111107
B
A
P
T
By
1
0
2
Single acting spool to be combined with electric control.
Used to control single-acting cylinders or start and stop
of uni-directional hydraulic motors. In position 0 work
port A is blocked. B port is plugged.
SPOOL DE CODE 560307
B
A
P
T
By
1
0
2
Open center motor spool to be combined with electric control. Used to
control double acting cylinders or bi-directional hydraulic motors. Allows
a cylinder to oat or a motor to wheel free when the spool is in position 0.
When the spool is in position 0 work ports are open to the tank.
48 | BM20 | BM25 | BM35 | BF201 |
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BM35 ELECTRIC + MANUAL CONTROL
TECHNICAL SPECIFICATIONS
MAX FLOW 35 l/min 9,2 GPM
MAX FLOW - Electrical control 25 l/min 6,6 GPM
MAX PRESSURE - Electrical control 200 bar 2900 PSI
MAX PRESSURE ON PORTS 200 bar 2900 PSI
MAX PRESSURE ON TANK LINE 25 bar 362 PSI
STANDARD THREADS
A - B P T P2 T2
G (BSP) 3/8"
3/8"
3/8" 3/8" 3/8"
F (UNF-SAE 8) 3/4"-16 3/4"-16 3/4"-16 3/4"-16 3/4"-16
INTERNAL OIL LEAKAGE
A - B → T 4 ÷ 8 cc/min
TESTING CONDITIONS
Pressure 100 bar
Oil temperature 40° C
Oil viscosity 32 mm²/s
I
L
19,5
65
29,5
N°2
ø
7
19 30
16
9
16,5
17,5
66
279
130
109
15,5 52,5
83
18
I = 80
L = 111,5
Kg = 2,79
By
B
T
B
2
0
A
A
1
P
By
B
T
B
2
0
A
A
1
P
(0)(1)
(2)
One to seven sections monoblock valve with the possibility to have one section with electric + manual control.
SPECIAL PRODUCTS
DIMENSION AND WEIGHT
L I WEIGHT
mm inch mm inch kg lb
112,00 4,41 80,00 3,15 2,85 6,30
| BM20 | BM25 | BM35 | BF201 | 49
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Ideal application: in all application where a monoblock valve
manual operated needs an electric operated section.
SPECIAL PRODUCTS
SPECIFIC SPARE PART LIST
MANUAL CONTROL KIT CODE 560985
Manual control with lever to be combined with electic
control.
ELECTRIC CONTROL EDO 12/24 VOLT
CODES
Electric actuator 12/24 Volt to be combined with
specic manual control kit. Connector not included.
56111105 - ELECTRIC CONTROL EDO 12 VOLT
56111141 - ELECTRIC CONTROL EDO 24 VOLT
ELECTRIC + MANUAL CONTROL 12/24 C CODES
Complete kit electric + manual control. Connector included.
801521 - ELECTRIC + MANUAL CONTROL 12C
801527 - ELECTRIC + MANUAL CONTROL 24C
EDO SOLENOID - 12 /24 VOLT
CODES
Connector not included.
025117 - EDO SOLENOID 12 VOLT
025119 - EDO SOLENOID 24 VOLT
CONNECTOR FOR ELECTRIC CONTROL
CODE 025045
SPOOL AE CODE 56111106
B
A
P
T
By
1
0
2
Double acting spool to be combined with electric control.
Used to control of double acting cylinders or bi-directional
hydraulic motors. In position 0 work ports are blocked.
SPOOL BE CODE 56111107
B
A
P
T
By
1
0
2
Single acting spool to be combined with electric control.
Used to control single-acting cylinders or start and stop
of uni-directional hydraulic motors. In position 0 work
port A is blocked. B port is plugged.
SPOOL DE CODE 560307
B
A
P
T
By
1
0
2
Open center motor spool to be combined with electric control. Used to
control double acting cylinders or bi-directional hydraulic motors. Allows
a cylinder to oat or a motor to wheel free when the spool is in position 0.
When the spool is in position 0 work ports are open to the tank.
50 | BM20 | BM25 | BM35 | BF201 |
www.blbhydraulic.com
APPLICATIONS
| BM20 | BM25 | BM35 | BF201 | 51
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APPLICATIONS
52 | BM20 | BM25 | BM35 | BF201 |
www.blbhydraulic.com
Equipment mounted on three point linkage of the tractor and used to excavate. Very compact monoblock valve that controls the
cylinders movement through two mechanical joysticks that make the job easier to the operator and allow precise and secure excavation.
BACKHOE
BM20
MICRO EXCAVATOR
BM35
Machine used for small excavations in construction, gardening and agriculture. Monoblock valve with 7 double-acting functions
and dedicated spools for simultaneous and precise movements on small excavators. The standard joysticks are protected with UV-resistant
rubber for durability.
| BM20 | BM25 | BM35 | BF201 | 53
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Machine used for small excavations in construction, gardening and agriculture. Monoblock valves with super-sensitive control
and convenient joysticks. Special relief valves for very low ow offer full system protection. It can be used with carry-over over plugs (power
beyond) to allow the usage of downstream implements such as hedge trimmers, mixing buckets, etc…
MICRO EXCAVATOR
BM20
AERIAL PLATFORM
BM20
Machine used to reach extreme working positions in full comfort and safety. Valve with safety levers and speed control through
the use of stroke limiters. A super-lightweight monoblock valve with a main relief valve for full system protection. Surface treatment against
atmospheric agents provided.
54 | BM20 | BM25 | BM35 | BF201 |
www.blbhydraulic.com
Machine used for shredding grass and bushes in ditches, on embankments and on roadsides. It is also used for cutting hedges in
parks or windbreak hedges in animal farms. System equipped with two monoblock valves that are remotely controlled by exible cables and
can accommodate a signicant bending angle. The control units are treated against atmospheric agents and have grease nipples as standard,
for a longer system durability. The main feature is motion control sensitivity. A main relief valve offers full system protection and safeguards other
components such as pumps and cylinders. As standard, the last element has a oating position for the shredder head control cylinder.
HEDGE MOWER
BM20
WOOD SPLITTER
BM25
Machine used to split logs or trunks into several pieces to make rewood that burns easily. Monoblock valve with electric and
manual control, equipped with main relief valve. Available with radio-control.
| BM20 | BM25 | BM35 | BF201 | 55
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Machine used to reach extreme working positions in full comfort and safety. Lightweight valve with special circuits that offer the
operator precise and safe manoeuvrability in accordance with the safety regulations in force.
AERIAL PLATFORM
BM20
STREET SWEEPER
BB20
Machine used to clean roads, squares, cycle lanes and urban centres, with collection. Monoblock valve with integrated pilot
operated check valves, relief valve and anti-shock valve. A circuit with oating elements can automatically level the brushes with the road
surface.
56 | BM20 | BM25 | BM35 | BF201 |
www.blbhydraulic.com
TELESCOPIC FRONT LOADER
BM20
Machine used for moving and positioning loads in construction, agriculture, gardening and plant nurseries. Monoblock valve with
pressure carry-over (power beyond) and surface protection for installation on tractors. As standard, exible remote control cables which can
accommodate a signicant bending angle. The control units are treated against atmospheric agents and have grease nipples as standard, for
a longer system durability. The main feature is motion control sensitivity. A main relief valve offers full system protection and safeguards other
components such as pumps and cylinders. The oating circuit allows the loading bucket to follow the ground.
STREET SWEEPER
BM20
Machine used to clean roads, squares, cycle lanes and urban centres, with collection. Monoblock valve with microswitches and
a relief valve for full system protection.
| BM20 | BM25 | BM35 | BF201 | 57
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Professional ride-on lawn mowers with grass collection and ground discharge. Lightweight and compact monoblock valve with
great sensitivity of movement control. Ideal for these professional mowers. Available with a oating circuit to follow the lawn surface.
LAWN MOWER WITH GRASS COLLECTION AND GROUND DISCHARGE
BM20
TRUCK CRANE
BM20
Crane installed on trucks to load and unload goods. Monoblock valve with six or seven sections, with an oil discharge lever as required
by the safety standards in force. A very lightweight and compact valve that offers dual control so that it can be operated from both sides of
the truck. Safety valves offer full system protection and ne meetering spools offer perfect cylinder control. Surface treatment to protect
against atmospheric agents
58 | BM20 | BM25 | BM35 | BF201 |
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Machine used to split logs or trunks into several pieces to make rewood that burns easily. Lightweight and compact valve for
basic wood splitter machines.
WOOD SPLITTER
BM25
Machine used for harvesting in orchards. Monoblock valve with electric safety signal.
FRUIT HARVESTER
BM20
| BM20 | BM25 | BM35 | BF201 | 59
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PRODUCTS CHOICE AND USE
DESCRIPTION
The purpose of directional control valves BM20, BM25, BM35 and
BF201 is to direct the ow circulating in the hydraulic systems,
towards the user chosen by the operator (directional spool valves).
The function is obtained by moving the spool within a cavity in a
controlled and sequential way and opening orices that, connecting
with each other, realize the functional circuits. Functional character-
istics are specied in the initial part of this catalogue.
CHOICE AND USE
Before choosing the correct conguration of the directional
control valves, it is necessary to identify:
■ performances (pressure, ow rate, temperature)
■ functional characteristics of each section (hydraulic scheme,
actuator and control)
■ equipment in which it will be built-in (installation, accessibility,
hoses connection, tank, lter).
Choice must be made so that the directional control valves are
used within the performance limits listed in this catalogue and
used in compliance with the operating conditions shown in the
table below:
HYDRAULIC FLUID: MINERAL OIL ACCORDING TO DIN 51524
Viscosity
Field 10 ÷ 460 mm²/sec
Optimal 12 ÷ 75 mm²/sec
Temperature
Excursion -20 ÷ +80 °C
Optimal +30 ÷ +60 °C
Maximum contamination level
(Filtro 25 μ ass. βx= 75)
NAS 1638: CLASS 9
ISO 4406: 20/19/16
Room temperature -30 ÷ +60 °C
Pressure and ow See catalogue
Pressure drop See catalogue
Oil velocity in the tubes: inlet and
ports
6 ÷ 8 m/sec
Oil velocity in the tubes: return 3 ÷ 4 m/sec
For all uses in which functional and performance conditions are
not referable to this catalogue, please contact BLB technical
department. In case of permitted use, kindly request a written
answer and appropriate additional specications to the use.
SPECIAL PRODUCTS
A high number of possible functional combinations characterize
BLB directional control valves. It is possible that some products
with high customization and combination might not be
identiable in this catalogue. For such products, BLB provides
the necessary advice to identify the best functional composition
and supplies the necessary documentation for their installation
and proper use
.
USE
Authorized use
All applications that comply with specifications described
in “TECHNICAL SPECIFICATIONS” and “CHOICE AND USE”
paragraphs.
Unauthorized use
■ do not use directional control valves in systems without
ltration
■ do not use directional control valves with uids other than
those listed in the previous table
■ do not use directional control valves to hold actuators in a
xed position for a time interval that is not compatible with
the working pressure. It is strictly prohibited to use directional
control valves as holding tools. In all cases in which 0 leakage is
required, auxiliary valves (specic for this purpose), have to be
installed directly on the actuators.
SAFETY STANDARDS
Valves surfaces have sharp edges and internal cavities with
residual oil. Therefore, during handling operations (storage,
control, installation, demolition, testing, maintenance and
disposal) it is necessary to:
■ handle the products with protective gloves
■ wear appropriate work clothes and non-slip work footwear
■ use suitable handling equipment
■ review the handling methods (see paragraph “Handling and
storage”).
60 | BM20 | BM25 | BM35 | BF201 |
www.blbhydraulic.com
IDENTIFICATION AND PACKAGING
Directional control valves are all individually packed in oil-proof
plastic bags and packed.
Individual packaging in cardboard boxes is available on request.
Each valve is identied by an adhesive label on which are reported
the 6 or 8-digit code of the product and the production lot. In
alternative, laser stamping reporting the same information is
printed out directly on the body.
C20
902001
BM20/4
1
MADE IN ITALY
1.465
SERIAL NUMBER
ITEM CODE
CHECKS UPON RECEIPT
Upon goods receipt, please check that:
■ packaging and products have not been damaged during
transport
■ supply is in accordance with the order
■ documents are complete and exhaustive
In case of non-conformities, please notify BLB within eight days
from goods receipt.
WARNING:
directional control valves are packed in oil-proof
plastic bags. The internal cavities contain residual oil retained by
the protective plastic plugs on ports.
NB: Remove the packaging before installation and remove the
plugs only when the connection hoses have to be assembled
.
HANDLING AND STORAGE
Handling must be carried out carefully and with adequate means
for the size and weight of the package, whether it is a single pack
or a multiple pack. It is necessary to take every precaution to
avoid damages that could compromise the functional eciency
of the products and safety of anyone present in proximity of the
areas in which you operate. All BLB products need to be stored
in a dry place, protected from atmospheric agents and possible
damages. If you remove the secondary packaging, BM20, BM25,
BM35 and BF201 valves must be stored with the oil-proof
protective plastic bags.
| BM20 | BM25 | BM35 | BF201 | 61
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VALVE INSTALLATION
Before installing the products, it is necessary to check that
it has not been damaged during internal handling and storage
operations. In case of long storage before usage, please check
that the product is complete with all its parts. In particular,
check that the protective plugs have not been removed. In all
cases in which the proper operation of the valve is doubtful,
make proper tests on bench and replace those parts found
faulty (oxidized, damaged, etc…). In case of uncertainty, please
contact an authorized BLB service center. Furthermore, make
sure that the system characteristics are those foreseen in the
original project (ltration, oil type and viscosity, temperature
control, tank capacity, etc…).
IMPORTANT: the installation of BM20, BM25, BM35 and BF201
requires the tightening of screws, ttings and hoses. For each of
these elements it is necessary to use the appropriate tools and
wrenches that allow the control of the tightening torque. Excessive
tightening causes deformations to the valve, compromising its
regular operation. Weak tightening may affect the functionality and
safety. Use the table below to determine the correct tightening
torque for each element. Do not use provisional extensions and
do not heat keys and wrenches.
PART THREAD
Nm
Fixing screws
M5 x 0,8
8.8
8
Fittings/Plugs
1/4’’ BSP
9/16”-18 SAE 6
16
3/8” BSP
3/4”-16 SAE 8
32
Main relief valves
3/8” BSP 32
3/8” BSP 32
BM20, BM25, BM35 AND BF201 INSTALLATION PROCEDURES
CONSISTS OF 3 STEPS:
STEP 1: xing
Prepare the area where the valve will be placed, in order to make
it easy to assemble, connect the hose and the adjustments during
start-up and testing. Install the valve in shock and vibration-free
areas. While moving the valve, do not cause accidental bumps or
shocks and follow the instructions listed in the “HANDLING AND
STORAGE” paragraph. The valve must be xed with M6 screws
through the holes provided. Apply thread-lock accessories. The
mounting position is irrelevant as long as the directional control
valve rests on a rigid and perfectly at surface. This is necessary
so that the tightening of the xing screws does not cause harmful
deformations.
This is necessary so that the tightening of the xing screws does
not cause harmful deformation.
STEP 2
: connecting the hydraulic hoses (inlet, uses, drain)
Use hoses and ttings suitable for the indicated maximum ow
and pressure.
It is strictly prohibited the usage of conic ttings and the reversal
of connections between inlet (P, P2) and tank lines (T, T2). In order
to avoid any contamination, remove the protective plugs from
the valve ports only when making hose connections. Do not use
tapes on the threads to make the seal. Tighten the ttings with the
tightening torque indicated in the previous table.
STEP 3: Sytem starting
Before starting, “wash the system” by ushing oil from an auxiliary
system. Start the system and then slowly operate the actuators
individually and not under load, until the system is lled with oil.
Proceed with the calibration of the valves and complete testing of
the system. If it is not possible to carry out the initial ushing, clean
the lter at the end of the testing. Do not calibrate valves without
rst applying a pressure gauge on the inlet section of the valve
and on line where deemed necessary.
INSTRUCTIONS
62 | BM20 | BM25 | BM35 | BF201 |
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6.3
6.1
1.3
1.2
1.1
4.2
5.2
T
T2
1
4
5
6
7
8
3
2
6.2
4.1
5.1
1. remove the screws (part 6.2) with a 4 mm hex key and remove
the spool control cap (part 6.3)
2. remove the spool control (part 6.1) using a 4 mm hex key
3. remove the screws (part 4.1) with a 4 mm hex key and remove
the manual actuator (part 4.2)
4. remove the spool (part 5.2) from its seat and remove the seals
(part 5.1)
5. lightly oil the new spool with clean hydraulic uid; insert the
spool into the valve and gently move it back and forward to
make sure there is very little resistance
6. starting from the actuator side:
■ slide the spool towards the spool control side until the O-ring
seat (actuator side) is exposed and insert the seal
■ gently slide the spool towards the opposite side until
the O-ring seat (spool control side) is exposed and
insert the seal
■ making sure not to exceed the spool stroke (to avoid seals
breaking), gently slide the spool to place it in the correct
operating position
7. install the manual actuator (part 4.2) and tighten the screws
(part 4.1) to 6 Nm
8. install the spool control (part 6.1) and tight it to 6 Nm
9. install the spool control cap (part 6.3) and tighten the screws
(part 6.2) to 6 Nm
If the spool is not sticking, the installation is complete.
CONFIGURATION CHANGE - SPARE PARTS INSTALLATION
Drawing 1
CHANGING SPOOLS AND SEALS
(see drawing 1
):
| BM20 | BM25 | BM35 | BF201 | 63
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CHANGING THE SPOOL CONTROL (see drawing 1
)
1. remove the screws (part 6.2) with a 4 mm hex key and remove
the spool control cap (part 6.3)
2. remove the spool control (part 6.1) using a 4 mm hex key
3. install the new spool control (part 6.1) and tight it to 6 Nm
4. install the spool control cap (part 6.3) and tighten the screws
(part 6.2) to 6 Nm.
SETTING THE RELIEF VALVE
(see drawing 1
)
An adjustable relief valve is standard on all BLB directional control
valves. The relief pressure is adjusted by releasing the nut (part
1.2) with a 13 mm key (VL20) or a 10 mm key (VL25) and turning
the adjusting screw (part 1.1) with a 4 mm hex key (VL20) or 3 mm
hex key (VL25). Turning the adjusting screw clockwise will increase
the pressure and counter-clockwise will decrease the pressure (a
pressure gauge must be installed in the inlet line whenever the
relief pressure is adjusted).
HOW TO INSTALL CARRY OVER ADAPTER
(POWER BEYOND) - CO
(see drawing 1
)
Screw the carry over adapter (power beyond) (part 7) into the T2
port with a 22 mm hex wrench and tighten to 32 Nm. Connect the
T port to the tank to avoid the system blow up.
HOW TO INSTALL CLOSE CENTER PLUG
ADAPTER - CCP
(see drawing 1
)
1. screw the CCP plug (part 8) into the T2 port with an 8 mm hex
wrench and tighten to 32 Nm
2. in case relief valve VL is present, it has to be substituted with a
relief valve plug RVP
3. connect the T port to the tank.
HOW TO INSTALL RELIEF VALVE PLUG (RVP)
(see drawing 1
)
1. remove the relief valve (part 1) with a 20 mm wrench (VL20) or
19 mm wrench (VL25)
2. take out the non-return valve VNR (part 2) and install it on the
relief valve plug RVP
3. screw the relief valve plug into the relief valve port with an 8 mm
hex key and tighten to 32Nm
During this operation, pay attention to the correct positioning of
the non-return valve VNR.
64 | BM20 | BM25 | BM35 | BF201 |
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CHANGING MANUAL ACTUATOR INTO
JOYSTICK ACTUATOR JS(1) OR JS(2) (see drawings
2, 3 and 4)
10
9
8
1
7
6
4
3
2
55
Drawing 2
12.1
12.2
13.1
13.2
11.2
11.1
11.3
11
13
12
3
Drawing 3
3
JS(2)
Drawing 4
1. remove the screws (drawing 3, part 11.2) with a 4 mm hex key
and remove the spool control cap (drawing 3, part 11.3)
2. remove the spool control (drawing 3, part 11.1) with a 4 mm
hex key
3. remove the screws (drawing 3, part 12.1) with a 4 mm hex key
and remove the manual actuator
4. remove the spools (drawing 3, part 13.2) from their seats and
remove the seals (drawing 3, part 13.1)
5. lightly oil the new spools without appendix (drawing 4, part
14.1) with clean hydraulic uid; insert the spools into the valve
and gently move them back and forward to make sure there is
very little resistance
6. starting from the actuator side:
■ slide the spools towards the spool control side until the
O-ring seat (actuator side) is exposed then insert the seals
■ gently slide the spools towards the opposite side until the
O-ring seat (spool control side) is exposed then insert the
seals
■ making sure not to exceed the spools stroke (to avoid seals
breaking), gently slide the spools to place them in the correct
operating position
7. apply thread locking liquid (Loctite) on the M6 appendix thread
(drawing 2, part 1) and screw them into the spools (drawing 4,
part 14.1), taking care to remove any excess liquid
8. install the spool controls (drawing 3, part 11.1) and tighten them
with a 4 mm wrench to 6 Nm; position the spools appendix as
shown in picture 1 for JS(1) and picture 2 for JS(2):
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4
6 Nm
JS(1)
Picture 1
44
6 Nm
JS(2)
Picture 2
9. reassemble the spool control cap (drawing 4, part 11.3) and
tighten the screws (drawing 4, part 11.2) to 6 Nm
10. insert the JS plate (drawing 2, part 2) and x it to the valve body
with the screws (drawing 2, part 3) using a 3 mm hex key as
shown in picture 3 for JS(1) and picture 4 for JS(2):
3
JS(1)
Picture 3
3
JS(2)
Picture 4
11. insert the ball joint (drawing 2, part 4) in the appendix of the
rst valve section for JS(1) or of the second valve section for
JS(2) and x it with the self-locking nut (drawing 2, part 6) using
two 13 mm wrenches, one to hold the ball joint and the other
one to screw the nut as shown in picture 5 for JS(1) and picture
6 (for JS (2 ):
13
13
JS(1)
Picture 5
13
13
JS(2)
Picture 6
12. insert the ball joints (drawing 2, part 5) in the remaining
appendix, xing them with the self-locking nuts (drawing 2, part
7) using a 13 mm wrench on the ball joints to hold them and a
10 mm wrench to screw the nuts
13. assemble the base for ball joints (drawing 2, part 8) inserting
the ball joints in the designated holes; insert the screws
(drawing 2, part 9) and tighten them on the ball joints to 8.5
Nm using a 5 mm hex key, as shown in picture 7 for JS(1) and
picture 8 for JS(2):
66 | BM20 | BM25 | BM35 | BF201 |
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5
8.5 Nm
JS(1)
Picture 7
5
8.5 Nm
JS(2)
Picture 8
14. cover the entire actuator with the bellow (drawing 2, part 10)
15. assemble the joystick lever (drawing 4, part 15)
16. test the valve and check the joystick functionality as shown in
picture 9 for JS(1) and picture 10 for JS(2):
A1
B1 B2
A2
JS(1)
Picture 9
A1
B1 B2
A2
JS(2)
Picture 10
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Ordinary and preventive maintenance
■ using a pressure gauge, periodically check the functionality of
the pressure relief valve VL20 / VL25 and verify its calibration. It
is suggested to replace it if no longer reliable
■ periodically clean the lters of the system; Excessive oil
contamination causes irregular operation of the non-return
valve VNR, the pressure relief valve VL20/VL25 and the spools.
DEFECTIVENESS AND DISMANTLING
DEFECTIVENESS
All BM20, BM25, BM35 and BF201
directional control valves
are delivered after passing the nal acceptance tests. During the
operating time of the directional control valves, it is possible to
notice the following defectiveness:
Spool sticking
CAUSE CORRECTIVE ACTION
Over-tightening of the
xing screws
Loosen the xing screws and tighten again as
indicated in the table on page 61
Support base with severe
geometric errors (not at)
Adopt additional brackets or elastic elements
Excessive working
temperature
Check the valves setting and the pressure
drop of the system
Excessive working pressure
Check the working pressure and the valves
settings. Eliminate water hammer (pressure
peaks)
Excessive oil contamination
Replace oil and lters. Wash the system with
auxiliary uxing. Carry out maintenance at
shorter intervals
Valve not suitable for the
application
Check and in case review the choice of the
valve
Oil leakage at the spool
CAUSE CORRECTIVE ACTION
Seals worn or broken Replace the seals
Backpressure on tank line Check for possible tight spots towards tank
Excessive ow for the valve Loosen ttings and fastening screws
Excessive working
temperature
Check the valves setting and the pressure drop
of the system
Excessive oil pressure
Check the working pressure and the valves
settings.
Eliminate water hammer (pressure peaks)
Valve not suitable for the
application
Check and in case review the choice of
the valve
Excessive internal leakage
CAUSE CORRECTIVE ACTION
Excessive uidity of the oil
Improve oil cooling. Check or modify the
calibration of the maximum pressure valve
Excessive working pressure
Check the working pressure and the valves
settings. Eliminate water hammer (pressure
peaks)
Valve seals worn or broken Replace the seals.
Valve not suitable for the
application
Check and in case review the choice of the
valve
Spare parts
The spare parts available are shown in this catalogue. Use only
original spare parts. To correctly perform any replacements
comply with the relevant technical specications (sheets,
assemblies, bill of materials, procedures) provided by BLB.
DISMANTLING
BLB directional control valves no longer usable must be
disassembled to split the parts constituting them. Separate
the metal parts from those in synthetic material or rubber. Do
not dispose part and the residual oil in them contained in the
environment.
MAINTENANCE
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WARRANTY AND LIABILITY LIMITS
BLB products are exclusively appointed to professional operators
and users. Therefore, in warranty topics, it is not applied the
discipline of Decree-Law no. 24 of 02-02-2002 in performance of
European Directive 1999/44/EC. All products are warranted for a
period of 12 (twelve) months from date of shipment from BLB
to be free from defects in materials and workmanship under:
■ correct use
■ normal operating conditions
■ proper application
BLB’s obligation under this warranty is limited, at BLB’s option,
ex-factory, to the repair or exchange, of any BLB product or part,
which proves to be defective as provided herein. All transport
are ex-works. Any description of goods, including any reference
to Buyer’s specication and any description in catalogues,
circulars and other written material published by BLB is for the
sole purpose of identifying the products and does not create
an express warranty that the goods conform to the sample
or model. Buyer is the sole responsible for determining the
suitability of goods sold hereunder for Buyer’s use. BLB reserves
the right to discontinue, modify or revise the specications of the
products described herein. All details and components may vary
depending on the installation. Equipment manufactured by third
parties and included in the supply together with the material
produced by BLB are subjected to the warranty conditions of
the parts producer. BLB is not subjected to warranty obligations
on breakdowns, damages, malfunctions, failures, or ineciency
resulting from wrong installation, intentional or unintentional
tampering, poor maintenance, negligence or incompetence of
the end user. Modications or repairs carried out by people
not specically authorized in writing by BLB will invalidate the
warranty. Late or non-payment, even partial, of the supplies
cancels the warranty. Warranty conditions do not confer to the
customer the right to suspend or defer the payments which will
have to be made in any case under the conditions agreed and
specied in the BLB order conrmations. BLB reserves the right
to cancel the warranty if:
■ labels or tags with the producer mark, product code and serial
number have been deleted or removed
■ the product has been modied or machined without express
authorization given by BLB
■ the product has not been used in accordance with the
instructions provided or for purposes other than those for
which it has been designed.
Warranty is recognized only to BLB’s direct customers. Anyone
in possession of BLB products, which however have been
bought through third parties (distributors, dealers, installers or
manufacturers of any kind), will have to contact the direct supplier
for any eventual warranty claim.
THERE ARE NO EXPRESS WARRANTIES OTHER THAN THOSE
SPECIFICALLY DESCRIBED HEREIN.
The Court of Justice of BLB’s seat (Vicenza – Italy) is the only
competent for any controversy.
BLB S.r.l.
Via Natta, 1
36040 Brendola (VI) - Italy
T. +39 0444 401141
www.blbhydraulic.com
Nº 50 100 11533
CTL 20/25/35/BF201 - May 2021 - © BLB Srl - All rights reserved