TESTO ITC KORINNA 28mm Allargato
MONOBLOCK
DIRECTIONAL CONTROL VALVE
SDM080
2 DAT001E
Features
Simple, compact and heavy duty designed monoblock valves from 1 to 6 sections for open and closed centre hydraulic systems.
H Fitted with a main pressure relief valve and a load check valve.
H Available with parallel or tandem circuit.
H Optional carry--over port.
H Diameter 14 mm -- 0.55 in interchangeable spools.
H Available manual, with microswitches and remote with flexible cables spool control kits.
6
th
edition November 2000:
This edition supercedes all prior documents.
WARNING!
All specifications of this catalogue refer to the standard product at thisdate.
Walvoil, oriented to a continuous improvement, reserves the right to
discontinue, modify or revise the specifications, without notice.
WALVOIL IS NOT RESPONSIBLE FOR ANY DAMAGE CAUSED BY AN
INCORRECT USE OF THE PRODUCT.
Additional information
This catalogue shows the product in the most standard configurations.
Please contact Customer Service Dpt. for more detailed information or
special request.
SDM080
3DAT001E
Contents
Contents
Working conditions 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensional data 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic circuit 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance data 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering codes 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inlet relief options 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spool options 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
“A” side spool positioners 16. . . . . . . . . . . . . . . . . . . . . . . . . . .
“B” side options 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inlet and outlet port options 23. . . . . . . . . . . . . . . . . . . . . . . . .
Installation and maintenance 24. . . . . . . . . . . . . . . . . . . . . . . .
SDM080
4 DAT001E
Thiscatalogueshowstechnicalspecificationsanddiagramsmeasuredwithmineraloilof46mm
2
/s -- 46 cSt viscosityat 40°C tempera-
ture.
Nominal flow rating 25 l/min
Operating pressure (maximum) 315 bar 4600 psi
Max. back pressure on outlet port T 25 bar 360 psi
Internal leakage A(B)®T
Dp=100 bar -- 1450 psi
fluid and valve at 40°C
3 cm
3
/min 0.18 in
3
/min
Fluid Mineral oil
Fluid temperature with NBR (BUNA--N) seals from --20° to 80°C
with FPM (VITON) seals from --20° to 100°C
Viscosity operating range from 15 to 75 mm
2
/s from 15 to 75 cSt
min. 12 mm
2
/s 12 cSt
max. 400 mm
2
/s 400 cSt
Max level of contamination 19/16 -- ISO 4406
Ambient temperature from --40° to 60°C
NOTE -- For different conditions please contact Customer Service.
Working conditions
Dimensional data
15
°
21
90
24
61.5
33.7
16
15
F
24
E
32.25
60
92
9.5
35.5
61.510.5
10.5
176.5
32 32 32
15
46.5
15
°
M8 n.3 threads
WALVOIL
SDM080/2
P0000001
100820001
MADE IN ITALY
Valve code
Production batch :
P00 = production year (2000)
00001 = progressive number
Valve type
M 8
M 8
Posit. 1
Posit. 2
Posit. 0
2.42
0.95
1.33
0.83
3.54
0.41
2.36
1.27
0.63
1.26 1.26 1.26
0.59
0.95
0.37
1.40
0.41 2.42
3.621.83
6.95
0.59
P
T
Carry--over
WALVOIL
SDM080/2
P0000001
100820001
MADE IN ITALY
17
0.67
40
1.57
24
0.94
96
3.78
5
0.2
69
2.72
8
0.32
SDM080
5DAT001E
T
Y
P
E
E F Weight
T
Y
P
E
E F Weight
T
Y
P
E
mm in mm in kg lb
T
Y
P
E
mm in mm in kg lb
SDM080/1--P
95 3.74 64 2.52 2.5 5.5
SDM080/4--P
191 7.52 160 6.30 5.5 12.2
SDM080/2--P
127 5.00 96 3.78 3.5 7.7
SDM080/5--P
223 8.78 192 7.56 6.5 14.3
SDM080/3--P
159 6.26 128 5.04 4.5 9.9
SDM080/6--P
255 10.04 224 8.82 7.5 16.5
Standard threads
PORT
BSP
(ISO 228/1)
UN--UNF
(ISO 11926--1)
METRIC
(ISO 6149--1)
Inlet P and carry--over C G 3/8 M18x1.5
A and B ports G 1/4 9/16--18 UNF--2B (SAE 6) M14x1.5
Outlet T G 3/8 M18x1.5
Hydraulic circuit
T2
T1
A1 B1 A2 B2A1 B1 A2 B2
P
P1
T
T1
T2
P
P1
T
T1
T2
Ex.: SDM080/2--SP1(TG3--175)/18L/18L/PSAEx.: SDM080/2--P(TG3--175)/18L/18L/PSA
Tandem circuit (special body)
Standard execution with left inlet in relation to the lever pivot box and top inlet and outlet ports (PSA configuration).
Parallel circuit
175
Lever pivot box
Pressure relief valve
Flow through (LC)
Pressure line
Outlet line
Load check valve
NOTE -- A simmetrical body allows the reverse assembly of spools and relative control kits (right inlet ED).
P T
T2
2500
175
2500
SDM080
6 DAT001E
Work port to outlet
Inlet to work port
Open centre
Performance data (pressure drop vs. flow)
0
10
20
30
40
0 10 20 30 40
Flow
Pressure drop
540
360
180
(l/min)
(bar)
(psi)
0
10
20
30
40
0 10 20 30 40
Flow
Pressure drop
540
360
180
(l/min)
(bar)
(psi)
0
10
20
30
40
0 10 20 30 40
Flow
Pressure drop
540
360
180
(l/min)
(bar)
(psi)
NOTE -- Measured with spool type 1.
A1 A2 A3 A4 A5 A6
B1 B2 B3 B4 B5 B6
P
T
A1 A2 A3 A4 A5 A6
B1 B2 B3 B4 B5 B6
P
T
A1 A2 A3 A4 A5 A6
B1 B2 B3 B4 B5 B6
P
T
From upper inlet to upper outlet (PSA configuration).
From upper inlet to A port (spool in position 1) or B port (spool in position 2).
From A port (spool in position 2) or B port (spool in position 1) to upper outlet
2 sections
4 sections
6 sections
P®A
6
(B
6
)
P®A
1
(B
1
)
A
6
(B
6
)®T
A
1
(B
1
)®T
SDM080
7DAT001E
SDM080
8 DAT001E
3. Spool options page 11
2. Inlet relief options page 10
1. Body kit *
Ordering codes
TYPE CODE DESCRIPTION
VMD080 direct pressure relief valve type T
(TG2--80) X162121080 Range 63 to 125 bar / 900 to 1800 psi
standard setting 80 bar / 1150 psi
(TG3--175) X162121175 Range 100 to 200 bar / 1450 to 2900 psi
standard setting 175 bar / 2500 psi
(TG4--250) X162121250 Range 160 to 250 bar / 2300 to 3600 psi
standard setting 250 bar / 3600 psi
Standard setting is referred to 10 l/min flow.
SV XTAP524340 Relief valve blanking plug
1.
SDM080/ 2 -- P (TG3 -- 175) / 1 8 SLP / 1 8 SLP / PSA *
TYPE CODE DESCRIPTION
1--P 5KC5113000 Parallel 1 section
2--P 5KC5123000 Parallel 2 sections
3--P 5KC5133000 Parallel 3 sections
4--P 5KC5143000 Parallel 4 sections
5--P 5KC5153000 Parallel 5 sections
6--P 5KC5163000 Parallel 6 sections
TYPE CODE CIRCUIT DESCRIPTION
1 3CU1010130 Double acting, 3 positions, with A and B
closed in neutral position
1CS 3CU1010200 Double acting, 3 positions, with A and B
closed in neutral position, for flow up to
12 l/min -- 3.17 US gpm
1PA(55)BH 3CU1011100 Double acting, 3 positions, with anti--shock
valve on port A
(set to 55 bar / 800 psi)
1PB(190) 3CU1011200 Double acting, 3 positions, with anti--shock
valve on port B
(set to 190 bar / 2760 psi)
2CS 3CU1025130 Double acting, 3 positions, with A and B
open to tank in neutral position
3CS 3CU1031130 Single acting on A, 3 positions, B plugged;
needs G1/4 plug (see part I)
2. 3. 4. 5.
Include body, seals and load check valve.
6.
1
st
section
following
section
4. 6.
PSC
AEK
6.
PSA
AE
AEK
8
8D2
8MS3
9B--10B--11B
1.
I
Pressure relief valve setting in bar
Example:
SDM080
9DAT001E
II Optional handlevers
I Ports plug *
6. Inlet and outlet port options * page 23
5. ”B” side options page 20
4. “A” side spool positioners page 16
Ordering codes
TYPE CODE DESCRIPTION
L 5LEV102010 Standard lever box
SLP 5COP102000 Without lever, with dust--proof plate
TQ 5TEL102100 Cable connection
LCB 5CLO102000 Machanical joystick
TYPE CODE DESCRIPTION
PSA 3XTAP722160 Upper inlet and outlet
(n.3 G 3/8 plugs required)
PSC 3XTAP722160 Cap side inlet and outlet
(n.3 G 3/8 plugs required)
AE 4TAP310007 M10x1 plug for carry--over
3XTAP722160 (n.2 G 3/8 plugs required)
AEK 4TAP310007 M10x1 for closed center circuit
3XTAP722160 (n.3 G 3/8 plugs required)
TYPE CODE DESCRIPTION
8 5V08102000 With spring return in neutral position
8D 5V08102200 With spring return in neutral position and
extension pin with M6 female thread for dual
control
8D2 5V08102220 With spring return in neutral position and
extension pin with M8 thread for dual
control
8MS3 5V08102553 With spring return in neutral position,
operation in position 1 and 2, prearranged
for centralized microswitch control
9B 5V09202010 With detent in position 1 and spring return in
neutral position
10B 5V10202010 With detent in position 2 and spring return in
neutral position
11 5V11102000 With detent in positions neutral, 1 and 2
11B 5V11202010 With detent in positions1and2, spring return
in neutral position
NOTE (*) -- Items are referred to BSP thread.
2.
T
SV
3.
5.
6.
PSA -- PSC AE -- AEK
L
SLP
TQ
TYPE CODE DESCRIPTION
AL01/M8x120 170011012 For L lever box L = 120 mm / 4.72 in
AL08/M12x150 170013115 For LCB joystick L = 150 mm / 5.91 in
II
TYPE CODE DESCRIPTION
G1/4 3XTAP719150 For single acting spool type 3
LCB
II
SV: relief valve blanking plug
Pressure relief valve
Inlet relief options
0
100
200
300
400
0 10 20 30
VMD080 ( T G 3 -- 175)
Pressure setting in bar (standard 175 bar -- 2500 psi).
Adjustable spring type (2, 3, 4).
Adjustment type (G, Z).
Performance data
Adjustemt type
0
100
200
300
400
0 10 20 30
Flow
Pressure
(l/min)
(psi)
(bar)
G: with screw Z: with irony tamper proof cap
Spring nr. 3
0
100
200
300
400
0 10 20 30
Flow
Pressure
(l/min)
(psi)
(bar)
4500
3000
1500
Spring nr. 2
Flow
Pressure
(l/min)
(psi)
(bar)
Spring nr. 4
0.26”
RESPONSE TIME
10%
175 b ar
2500 psi
90%
95%
105%
Pressure
Time (”)
(% DP)
Response time
44 max.
Wrench 24 -- 42 Nm / 31 lbft
Allen wrench 5
Wrench 19 -- 24 Nm / 17.7 lbft
1.80
4
0.16
Allen wrench 6
42 Nm / 31 lbft
4500
3000
1500
4500
3000
1500
47
1.85
Cap code: 3COP124180
SDM080
10 DAT001E
F
J
Y
P
(on ports)
= 63bar/900psi
P
(on ports)
= 100bar/1450psi
P
(on ports)
= 250bar/3600psi
Type 1
Spool options
A
"
stroke =
A B
T P LC
P ® A B ® T
TP
A B
T P LC TP
A B
T P LC
P ® B A ® T
TP
P--A--B--T closed, with flow through line (LC) open
24
10
31
133
201
A B
P T
A B
P T
201
201
A B
P T
0.39
5.24
-- 5,5mm
-- 0.22 in
stroke =
+ 5,5mm
+ 0.22 in
0.95
1.22
Æ14
0.71
Performance data
0
10
20
30
0.0 1.0 2.0 3.0 4.0 5.0
Spool metering P®A(B)
Flow
Stroke (mm)
(l/min )
(in)
0.1 0.2
0
10
20
30
0.0 1.0 2.0 3.0 4.0 5.0
Spool metering A(B)®T
Flow
Stroke (mm)
(l/min )
(in)
0.1 0.2
= Type 1CS
Qin = 12 l/min
= Type 1
Qin = 25 l/min
F
J
Y
F
J
Y
F
Y
J
F
J
Y
SDM080
11DAT001E
Type 1PA(55)BH
Spool options
A
"
stroke =
Performance data
A B
T P LC
P ® A B ® T
TP
P ® B A ® T
P--A closed, B partially open to T
201
A B
P T
-- 5.5mm
-- 0.22 in
stroke =
+ 5.5mm
+ 0.22 in
0
30
60
90
120
150
0 2 4 6 8 10
Pressure--flow diagram
Pressure
Flow
(bar)
(l/min )
(psi)
2000
1000
A B
T P LC TP
A B
T P LC TP
201
A B
P T
201
A B
P T
SDM080
12 DAT001E
Type 1PB(190)
Spool options
A
"
stroke =
Performance data
A B
T P LC
P ® A B ® T
TP
P ® B A ® T
P--A--B--T closed, with flow through line (LC) open
201
A B
P T
-- 5.5mm
-- 0.22 in
stroke =
+ 5.5mm
+ 0.22 in
0
50
100
150
200
250
0 2 4 6 8 10
Pressure--flow diagram
Pressure
Flow
(bar)
(l/min )
(psi)
2000
1000
A B
T P LC TP
A B
T P LC TP
201
A B
P T
201
A B
P T
3000
SDM080
13DAT001E
F
J
Y
P
(on ports)
= 63bar/900psi
P
(on ports)
= 100bar/1450psi
P
(on ports)
= 250bar/3600psi
Qin = 12 l/min
Performance data
0
10
20
30
0.0 1.0 2.0 3.0 4.0 5.0
Spool metering P®A(B)
Flow
Stroke (mm)
(l/min )
(in)
0.1 0.2
F
J
Y
Type 2CS
Spool options
A B
P T
201
A
"
201
201
A B
P T
A B
P T
P ® A B ® T
P ® B A ® T
P closed, A e B to tank
with flow through line (LC) open
A B
T P LC TP
A B
T P LC TP
A B
T P LC TP
stroke =
-- 5,5mm
-- 0.22 in
stroke =
+ 5,5mm
+ 0.22 in
SDM080
14 DAT001E
F
J
Y
P
(on ports)
= 63bar/900psi
P
(on ports)
= 100bar/1450psi
P
(on ports)
= 250bar/3600psi
Qin = 12 l/min
Performance data
0
10
20
30
0.0 1.0 2.0 3.0 4.0 5.0
Spool metering P®A
Flow
Stroke (mm)
(l/min )
(in)
0.1 0.2
0
10
20
30
0.0 1.0 2.0 3.0 4.0 5.0
Spool metering A®T
Flow
Stroke (mm)
(l/min )
(in)
0.1 0.2
F
J
Y
F
J
Y
Type 3CS
Spool options
A
P T
201
A
"
201
201
A
P T
A
P T
P ® A
A ® T
P--A--T closed, with flow through line (LC) open
Port B plugged
stroke =
-- 5,5mm
-- 0.22 in
stroke =
+ 5,5mm
+ 0.22 in
A
T P LC TP
A
T P LC TP
A
T P LC TP
SDM080
15DAT001E
(mm)
--150
--75
0
75
150
--5.5 --4.5 --3.5 --2.5 --1.5 --0.5 0.5 1.5 2.5 3.5 4.5 5.5
Force
Force--stroke diagram
Stroke
(N)
0.1 0.2
(in)
20
10
(lbf)
--0.1--0.2 0
0
30
0
--20
--10
--30
C
B
A
C
B
A
With spring return
”A” side spool positioners
201
8 kit
38
Supplied with standard spring type B (see force--stroke diagram).
Available with lighter spring type A (8MA code: 5V08302000) or heavier type C (8MC code: 5V08202000).
8D--8D2 kits for dual control
44
M6
84
M8
37
8D kit 8D2 kit
Allen wrench 4
6.6 Nm / 4.9 lbft
Allen wrench 5
9.8 Nm / 7.2 lbft
201
1.50
Allen wrench 4
6.6 Nm / 4.9 lbft
Wrench 9
9.8 Nm / 7.2 lbft
1.73
Allen wrench 4
6.6 Nm / 4.9 lbft
Wrench 9
9.8 Nm / 7.2 lbft
3.31
1.46
SDM080
16 DAT001E
Operating features
Unlocking force : 200 N / 45 lbf ±10%. . . . . . . . . . . . . . . . .
Operating features
Unlocking force : 200 N / 45 lbf ±10%. . . . . . . . . . . . . . . . .
Operating features
Unlocking force : 200 N / 45 lbf ±10%. . . . . . . . . . . . . . . . .
72.5
2.85
With detent
“A” side spool positioners
9B kit
10B kit
11 kit
38
Operating features
Locking force : 100 N / 22.5 lbf ±10%. . . . . . . . . . . . . . . . . . .
Unlocking force : 100 N / 22.5 lbf ±10%. . . . . . . . . . . . . . . . .
201
201
201
11B kit
201
Allen wrench 4
6.6 Nm / 4.9 lbft
Allen wrench 5
9.8 Nm / 7.2 lbft
1.50
Allen wrench 4
6.6 Nm / 4.9 lbft
Wrench 5
9.8 Nm / 7.2 lbft
72.5
2.85
Allen wrench 4
6.6 Nm / 4.9 lbft
Wrench 5
9.8 Nm / 7.2 lbft
72.5
2.85
Allen wrench 4
6.6 Nm / 4.9 lbft
Wrench 5
9.8 Nm / 7.2 lbft
SDM080
17DAT001E
8MS3 kit: with centralized microswitch control
“A” side spool positioners
T
P
B2
A2A1
B1
P
T
Example of a two section valve assembly
M3
n.2 threads
T
P
A1 B1 A2 B2
P1
T2
T1
Allen wrench 4
6.6 Nm / 4.9 lbft
8
25.5
1
Bracket for 5MIC100
microswithc
Rocker arm to
actuate micro-
switch
Allen wrench 2.5
6.6 Nm / 4.9 lbft
Microswitch
on request
1.00
0.04
0.32
Allen wrench 2.5
6.6 Nm / 4.9 lbft
58.5
2.32
175
2540
Ex.: SDM080/2--P(TG3--175)/18MS3L/18MS3L/PSA -- KM 2 S 51
51 = with bracket for IP51 microswitch fixing
67 = with bracket for IP67 microswitch fixing
Assembling kit
Nr. of working sections
S = bracket placed on left
D = bracket placed on right
SDM080
18 DAT001E
8MS2 kit
microswitch operation in
position 2
“A” side spool positioners
Allen wrech 2.5 -- 6.6 Nm / 4.9 lbft
Notch
9.8 Nm / 7.2 lbft
Microswitches for 8MS kits
Complete with rubber cover and mounting screws
21 4
64
M3
2.5
0.10
30.2
68
25.5 14
Operating features
Current / voltage max. : 15 A / 480 VAC. . . . . . . . . . . .
: 0,25 A / 250 VDC
Weather protection : IP51. . . . . . . . . . . . . . .
1.5
0.06
27.1
58.2
33 6
18 4
55.5
M4
Operating features
Current / voltage max : 5 A / 250 VAC. . . . . . . . . . . . .
: 0,25 A / 230VDC
Weather protection : IP67. . . . . . . . . . . . . . .
Dedicated bracket is needed for the assembly
code: 3FLA225052
M51 code: 5MIC100 M67 code: 5MIC200
0.55
1.00
2.68
1.19
Stroke
6
0.24
Æ
2.52
0.83
0.16
2.19
0.71
4
0.16
2.29
1.30
0.24
Stroke
1.07
7
0.28
Æ
8MS3 kit: with centralized microswitch control
201
201
201
8MS1 kit
microswitch operation in
position 1
Other configurations
SDM080
19DAT001E
Dust proof plate SLP
Lever box L
”B” side options
54.7
21
2
1
0
M 8
66
46.5
Reinforced nylon with protection boot lever pivot box; it can be rotated 180° (L180 configuration).
NOTE -- The handlever must be ordered separately (see page 9).
14°40’ 14°40’
L180 configuration
Vertical handlever
assembly
Horizontal handlever
assembly
8
17.1
13.5
9
Æ
7
Ø8H8
201
201
Mechanical control with dust proof plate
Allen wrench 4
6.6 Nm / 4.9 lbft
Dust proof seal
103.5
30.7
42
1.83
0.83
2.15
2.60
1.65
1.21
4.07
0.67
0.32
0.35
0.53
0.28
0.3149
0.3158
SDM080
20 DAT001E
TQ cable connection
”B” side options
Waterproof cap for remote control with flexible cable.
NOTE -- For more information concerning remote cable control require appropriate documentation.
201
Flexible cable
Wrench 24
Wrench 24
Wrench 10Wrench 13
Allen wrench 4
6.6 Nm / 4.9 lbft
81
3.19
Example of cable control
P
T
SDM080/2 directional control valve:
without lever boxes
SCF030 remote control
CD flexible cables
TQ kit
SDM080
21DAT001E
Mechanical joystick LCB
”B” side options
10
0.39
22
0.87
201
201
Dimensions and movement scheme
Execution LCB1: pivot placed down on the left
1
st
section spool
2
nd
section spool
Execution LCB2
pivot placed down on the right
Execution LCB3
pivot placed above on the left
Execution LCB4
pivot placed above on the right
Pivot
Wrench 13
42 Nm / 31 lbft
Allen wrench 4
9.8 Nm / 7.2 lbft
Wrench 10
NOTE -- The handlever must be ordered separately (see page 9).
M12
Wrench 10
Allen wrench 4
9.8 Nm / 7.2 lbft
14
0.55
5.9
0.23
22
0.87
10
0.39
24
0.94
80.3
3.16
B1
A2
A1
B2
A2--B1
B1--B2
A2--A1
B2--A1
B2
B1
A2
A1
B1--B2 B2--A1
B1--A2 A1--A2
34
1.34
A1
A2
B1
B2
A2--A1
A1--B2
A2--B1 B1--B2
A2
B1
B2
A1
A2--B1 A2--A1
B1--B2 A1--B2
spool axis
2
st
section axis1
st
section axis
SDM080
22 DAT001E
AEK: closed centre
AE: with carry--over
PSC: “A” control side
PSA: upper (standard)
Inlet and outlet options
P T
T2
P C
T2
P T
T2
A1 B1 A2 B2
A1 B1 A2 B2
A1 B1 A2 B2
P
P1
T
T2
T1
P
P1
C
T2
T1
P
P1
T2
T1
See page 6
Ex.: SDM080/2--P(TG3--175)/18L/18L/PSC
Ex.: SDM080/2--P(TG3--175)/18L/18L/AE
Ex.: SDM080/2--P(TG3--175)/18L/18L/AEK
Allen wrench 6
24 Nm / 17.7 lbft
66.5
2.62
175
2500
175
2500
175
2500
Allen wrench 6
24 Nm / 17.7 lbft
Allen wrench 6
24 Nm / 17.7 lbft
Plug M10x1 DIN906
Allen wrench 5
24 Nm / 17.7 lbft
Allen wrench 6
24 Nm / 17.7 lbft
Plug M10x1 DIN906
Allen wrench 5
24 Nm / 17.7 lbft
T
SDM080
23DAT001E
Installation and maintenance
P
T
A1
A2
B1
B2
C
The SDM080 valve is assembled and tested as per the technical specification of this catalogue.
Before the final installation on your equipment, follow the below recommendations:
-- the valve can be assembled in any position, in order to prevent body deformation and spool sticking mount the product on a flat
surface;
-- inordertopreventthepossibilityofwaterenteringtheleverbox and spool controlkit, do not usehigh pressure wash downdirectly
on the valve;
-- prior to painting, ensure plastic port plugs are tightly in place.
Carry--over configuration
NOTE -- These torque are recommended. Assembly tightening torque depends on many factors, including lubrication, coating and
surface finish. The manufacturer shall be consulted.
SDM080
24 DAT001E
Fitting tightening torque -- Nm / lbft
THREADS TYPE P and C ports A and B ports T port
BSP (ISO 228/1) G 3/8 G 1/4 G 3/8
With O--Ring seal 35 / 25.8 25 / 18.4 35 / 25.8
With copper washer 40 / 29.5 30 / 22.1 40 / 29.5
With steel and rubber washer 30 / 22.1 16 / 11.8 30 / 22.1
UN--UNF (ISO 11926--1) 9/16--18 UNF--2B (SAE 6) 9/16--18 UNF--2B (SAE 6) 9/16--18 UNF--2B (SAE 6)
With O--Ring seal 30 / 22.1 30 / 22.1 30 / 22.1
METRIC (ISO 6149--3) M18x1.5 M14x1.5 M18x1.5
With O--Ring seal 45 / 33.2 35 / 25.8 45 / 33.2
Installation and maintenance
Spool
Normally spools are interchange-
able. Verifythe smoothness during
the assembly
“A” side spool
positioner
Pressure relief valve
Lever boxes
Body
14x2.00 O--Ring seal
code: 4GUA114020
Ring chamfer
Holding O--Ring bushing
Load check valve
Sealing edge
NOTE -- All articulated parts inside cap, lever box and mechanical joystick are lubricated with synthetic base grease grade NLGI2
SDM080
25DAT001E
Malfunction Cause Remedy
External leakage pivot box lever or
control kit side.
Worn spool seal due to mechanical
actuation or high back pressure.
Locate the leakage and replace the seal.
Check back pressure level.
Excessive internal leakage on A and B
ports.
Increase clearance between spools and
body due to high wear
Replace the directional control valve and
check the oil contamination level.
Dropping load during transition while
raising
High leakage on the load check valve.
Remove the load check valve and clean
the seat.
Inability to build pressure on A and B
p
o
r
t
s
.
Pressure relief valve blocked open. Remove and clean or replace the valve.
I
n
a
b
i
l
i
t
y
t
o
b
u
i
l
d
p
r
e
s
s
u
r
e
o
n
A
a
n
d
B
ports.
Low pump pressure and flow. Check the pump and circuit.
SDM080
26 DAT001E
Notes
The SDM080 valve can be supplied with one coat of opaque black paint (CVN configuration).
Example of specification: SDM080/2--P(TG3--175)/18L/18L/PSA--<CVN>
NOTE -- For different color consult Customer Service.
SDM080
27DAT001E
WALVOIL S.P.A.
42100 REGGIO EMILIA · ITALY · VIA ADIGE, 13/D
TEL. +39.0522.932411 · FAX +39.0522.300984
E--MAIL: INFO@WALVOIL.COM · HTTP: //WWW.WALVOIL.COM
SALES DEPARTMENT
TEL. +39.0522.932555 · FAX +39.0522.932455
D1409808I
DAT001E
