PRESSURE CONTROLS
C-17
C
Solenoid Controlled Relief Valves
Solenoid Controlled Relief Valves
The solenoid controlled relief valve is a combination of a pilot operated relief valve and a
solenoid operated directional valve. It is used for no-load pump operation by using electric
signals or, together with a remote control relief valve, for two or three pressure control of
the hydraulic system.
■ Specifications
Model Numbers
Max.
Operating
Pres.
MPa
Approx.
Mass
kg
BST
−
03
−
＊
−
＊
−
＊
−
＊
−
48
BST
−
06
−
＊
−
＊
−
＊
−
＊
−
48
BST
−
10
−
＊
−
＊
−
＊
−
＊
−
48
Threaded
Connection
BSG
−
03
−
＊
−
＊
−
＊
−
＊
−
48
BSG
−
06
−
＊
−
＊
−
＊
−
＊
−
48
BSG
−
10
−
＊
−
＊
−
＊
−
＊
−
48
Sub-plate
Mounting
Pres. Adj.
Range
MPa
Max.
Flow
L/min
25
★ - 25
100
200
400
See the
chart
below.
★ For relief valves, standard pilot operated relief valves are used.
For minimum adjustment pressures and other characteristics, see pages C-9 & C-10.
● For large flow valves (flange connection type), please contact us.
■ Approx. Mass
Model Numbers Double Sol. Single Sol. With Vent Restrictor
BST
−
03
BST
−
06
BST
−
10
BSG
−
03
BSG
−
06
BSG
−
10
7.1 kg
7.1 kg
10.8 kg
6.8 kg
7.7 kg
11.0 kg
6.6 kg
6.6 kg
10.3 kg
6.3 kg
7.2 kg
10.5 kg
7.6 kg
7.6 kg
11.3 kg
7.3 kg
8.2 kg
11.5 kg
■ Model Number Designation
A−
The coil type numbers in the shaded column are handled as optional extras.
In case these coils are required to be chosen, please confirm the time of delivery with us before ordering.
Request
BS Ｔ −03 −Ｖ −2B3A −A100 −Ｎ −48
With Vent
★1
Restrictor
Series Number
Type of
Mounting
Valve Size
High Venting
★2
Pres. Feature
Vent Type
★3
Coil Type
★4
Type of
Electrical Con.
Design
Number
★1. Models with vent restrictor are applicable only for the vent type 2B3A and 2B3B. For
details, see page C-19.
★2. Use high venting pressure types to reduce changeover time from unloading to onloading.
★3. For the details of the vent types, see the following page.
★4. The coil codes are the same as for solenoid operated directional valve DSG-01. See the
Solenoid Ratings on page C-52.
Ａ： With Vent
Restrictor
(Option) (Omit
if not required)
BS：Solenoid
Controlled
Relief
Valves
Ｔ： Threaded
Connection
Ｇ： Sub-plate
Mounting
03
06
10
03
06
10
Ｖ： For High
Venting
Pressure
Feature
(Omit if not
required)
2B3A
2B3B
2B2B
2B2
3C2
3C3
48
48
48
48
48
48
■ Low Noise Type Solenoid
Controlled Relief Valves
Low Noise Type Solenoid Controlled Relief
Valves are also available. For details, please
contact us.
Solenoid Controlled Relief Valves
None:
Terminal
Box Type
Ｎ：
With Plug-in
Connector
(DIN)
(Option)
AC：
A100, A120
A200, A240
DC：
D12 , D24
D48
AC→DC Rectified：
R100 , R200
C-18
Solenoid Controlled Relief Valves
■ Vent Types
Vent Type Graphic Symbols
Solenoid Operated
Directional Valve
Model Numbers
Operation
SOL“a” SOL“b” Vent Connecting
2B3A
2B3B
2B2B
2B2
3C2
3C3
DSG
−
01
−
2B3A
DSG
−
01
−
2B3B
DSG
−
01
−
2B2B
DSG
−
01
−
2B2
DSG
−
01
−
3C2
DSG
−
01
−
3C3
——
——
——
——
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
Connected to port "A".
Closed state (relief valve
setting pressure)
Connected to tank (no-load)
Connected to port "B".
Connected to tank (no-load)
Connected to port "A".
Connected to port "B".
Connected to port "B".
Closed state (relief valve
setting pressure)
Connected to port "A".
Connected to port "B".
Connected to tank (no-load)
Connected to port "A".
Connected to port "B".
■ Accessories
● Mounting Bolts
Valve Model
Numbers
Socket Head Cap Screw
BSG
−
03
BSG
−
06
BSG
−
10
M12×70L…2 Pcs. M12×95L…2 Pcs.
M16×60L…2 Pcs. M16×80L…2 Pcs.
M20×70L…2 Pcs. M20×90L…2 Pcs.
■ Sub-plates
Valve Model
Numbers
BSG
−
03
BSG
−
06
BSG
−
10
Sub-plate
Model Numbers
BGM
−
03
−
20
BGM
−
03X
−
20
BGM
−
06
−
20
BGM
−
06X
−
20
BGM
−
10
−
20
BGM
−
10X
−
20
Thread Size
Rc
3
／
8
1
／
2
3
／
4
1
1
1
／
4
1
1
／
2
Approx.
Mass kg
2.4
3.1
4.7
5.7
8.4
10.3
● Sub-plates are available. Specify the sub-plate model number
from the table above. When sub-plates are not used, the mounting
surface should have a good machined finish. (
1.6
)
● The sub-plates are those for pilot operated relief valves. For
dimensions, see page C-9.
■ Type of Electrical Conduit Connection
Type of electrical conduit connection is same as solenoid
operated directional valve DSG-01. For details, see page C-51.
PRESSURE CONTROLS
C-19
C
Solenoid Controlled Relief Valves
Solenoid Controlled Relief Valves
SOL a
SOL b
Lock Nut
14 Hex.
Two Collars
Position can be shifted
by 90° steps.
Solenoid Indicator Light
Pressure Adjustment Handle
INC.
Vent Port
Rc 3/8 Thd.
Tank Port
Rc “X ” Thd.
Remote Control Port
“B” Rc 1/8 Thd.
Pressure Port
Rc “X” Thd.
2 Places
Pressure Gauge Connection
Rc 1/4 Thd.
Remote Control Port
“A” Rc 1/8 Thd.
Manual Actuator
6 Dia. Through
Electrical Conduit Connection
G 1/2 Thd. (Both Ends)
AC :45.5
DC/R :50
AC :196.4
DC/R :204.4
47.5
47.5
K
L
Space Needed to Remove Solenoid-Each End
V
U
T
Q
S
P
N
44 Dia.
Fully Extended H
F
E
D
J
“C” SQ.
46
AC :98.2
DC/R :102.2
★2
★1
■ Option
● Models with Vent Restrictor
The type with a vent restrictor has a vent restrictor in vent types
2B3A and 2B3B added between a relief valve and a solenoid
operated directional valve. If prevents shock to the main circuit by
gradually lowering the venting pressure in the shift from the set
pressure to unloading.
Unloading pressure are the same as without a vent restrictor.
■ Instructions
● If a remote control relief valve is used in the vent circuit, see page
C-3. In addition, if the internal volume of the vent line is too large,
chattering is likely to occur. Thus, as far as possible reduce the inside
diameter and the length of the pipe.
● To adjust the pressure, loosen the lock nut and turn the handle slowly
clockwise for higher pressures or anti-clockwise for lower pressures.
Pressure change of one handle revolution is about 5 MPa. After
adjustments, do not forget to tighten the lock nut.
● Piping of the tank line should not be connected to any tank line of the
other valves, but connected directly to the reservoir.
● With a small flow, the setting pressure may be unstable. Use with the
minimum flow rate as the below chart.
Valve Size Min. Flow
03
06
10
8 L/min
15 L/min
BST
−
03, 06, 10
A
−
BS＊
−
＊
−
2B3A A
−
BS＊
−
＊
−
2B3B
★1. Pressure is limited by collars fitted. If a working pressure cannot be
attained, remove some collars. One collar is equivalent to 10 MPa.
★2. There are two threaded connection pressure ports. They can be
connected each other in-line; one as inlet and the other as an outlet
or the valve can be used by plugging one of the pressure ports.
Model Numbers
C D E F H J K N P Q S T U V X
BST
−
03
BST
−
06
BST
−
10
75
85
L
40
50
52
80
78
96
145
151
52
80
45
60
90
120
239.3
271.8
68.5
89
152.5
164.5
36
49
105.5
117.5
69
81
62
74
3
／
8
3
／
4
1
1
／
4
Models with Vent
Restrictor (Option)
A
−
BST
−
03, 06, 10
Models with Plug-in Connector (Option)
03
BST
−
06
−
＊
−
＊
−
＊
−
N
10
Model Numbers
Ｙ Ｚ ｄ
A
−
BST
−
03
A
−
BST
−
06
A
−
BST
−
10
269.3
301.8
182.5
194.5
135.5
147.5
For other dimensions, see
the above figure.
Name
Coil
Type
ｅ ｆ ｈ
AC Solenoid
DC Solenoid
R (AC
→
DC)
Solenoid
A＊
D＊
R＊
53
64
57.2
65
76
79
39
39
53
For other dimensions, see the above figure.
SOL b
AC :98.2
DC/R :102.2
d
Z
Y
SOL a
SOL b
AC :196.4
DC/R :204.4
51 51 h
e
f
Cable Departure
Cable Applicable:
Outside Dia. ..... 8-10mm
Conductor Area .....
Not Exceeding 1.5mm²
C-20
Solenoid Controlled Relief Valves
SOL a
SOL b
AC :45.5
DC/R :50
AC :196.4
DC/R :204.4
AC :98.2
DC/R :102.2
47.5
47.5
Space Needed to Remove Solenoid-Each End
K
L
N
a
E
b
F
H
Fully Extended J
6
D
46
“C” SQ.
44Dia.
V
U
T
Q
S
P
X
Remote Control Port
“A” Rc 1/8 Thd.
Manual Actuator
6 Dia. Through
Electrical Conduit Connection
G 1/2 Thd. (Both Ends)
"Y" Dia. Through
"Z" Dia. Spotface
4 Places
Remote Control Port
“B” Rc 1/8 Thd.
Pressure Gauge Connection
Rc 1/4 Thd.
Solenoid Indicator Light
Vent Port
Tank Port
Pressure Port
Lock Nut
14 Hex.
Two Collars
★
Pressure Adjustment
Handle
INC.
Mounting Surface
(O-Rings Furnished)
Locating Pin
6 Dia.
Mounting Surface
BSG
−
03：ISO 6264
−
06
−
09
−
1
−
97
BSG
−
06：ISO 6264
−
08
−
13
−
1
−
97
BSG
−
10：ISO 6264
−
10
−
17
−
1
−
97
BSG
−
03, 06, 10
★ Pressure is limited by collars fitted. If a working pressure cannot
be attained, remove some collars. One collar is equivalent to 10
MPa.
Model Numbers
Ｃ
BSG
−
03
BSG
−
06
BSG
−
10
75
75
85
Note :For dimensions of the valve mounting surface, see the dimensional drawing (page C-9) of the sub-plate used together.
Ｄ
40
40
45
Ｅ
57
40
47
Ｆ
78
60
67
Ｈ
78
78
84
Ｊ
145
145
146
Ｋ
14.1
17
20.7
Ｌ
41
52
62
Ｎ
82
104
124
Ｐ
225.8
249.8
283.8
Ｑ
77
83.5
110
Ｓ
130.5
148
155.5
Ｔ
22
4.5
6
Ｕ
83.5
101
108.5
Ｖ
47
64.5
72
Ｘ
40
57.5
65
Ｙ
13.5
17.5
21.5
Ｚ
21
26
32
ａ
55
38
45
ｂ
77
58
65
Models with Vent Restrictor (Option)
A
−
BSG
−
03, 06, 10
For other dimensions, see the above figure.
Model Numbers
ｄ
A
−
BSG
−
03
A
−
BSG
−
06
A
−
BSG
−
10
255.8
279.8
313.8
ｅ
160.5
178
185.5
ｆ
113.5
131
138.5
For other dimensions, see the above figure.
Name Coil Type
AC Solenoid
DC Solenoid
R (AC
→
DC) Solenoid
A＊
D＊
R＊
ｈ
53
64
57.2
ｊ
65
76
79
ｎ
39
39
53
SOL b
AC :98.2
DC/R :102.2
f
e
d
SOL a
SOL b
AC :196.4
DC/R :204.4
51 51 n
h
j
Cable Departure
Cable Applicable:
Outside Dia. ..... 8-10mm
Conductor Area .....
Not Exceeding 1.5mm²
Models with Plug-in Connector (Option)
03
BSG
−
06
−
＊
−
＊
−
＊
−
N
10
PRESSURE CONTROLS
C-21
C
Solenoid Controlled Relief Valves
Solenoid Controlled Relief Valves
10 12 13 15 14
41 29 18 30 40 35
27
37
8
7
11
19
2
22
6
3
25
4
23
21
9
24
20
5
1
28
36
40
38
BST
−
03, 06, 10
BSG
■ List of Seals
BST
−
03, 06, 10
Item
Name of
Parts
Part Numbers
BST-03 BST-06 BST-10
Qty.
21
24
O-Ring
O-Ring
1
1
OR NBR-70-1
P9-N
OR NBR-70-1
P9-N
OR NBR-70-1
P9-N
OR NBR-90
P32-N
OR NBR-90
P32-N
OR NBR-90
P32-N
BSG
−
03, 06, 10
Item
Name of
Parts
Part Numbers
BSG-03 BSG-06 BSG-10
Qty.
21
22
23
24
O-Ring
O-Ring
O-Ring
O-Ring
1
1
2
1
OR NBR-70-1
P9-N
OR NBR-70-1
P9-N
OR NBR-70-1
P9-N
OR NBR-90
P9-N
OR NBR-90
P11-N
OR NBR-90
P9-N
OR NBR-90
P18-N
OR NBR-90
P28-N
OR NBR-90
P32-N
OR NBR-90
P32-N
OR NBR-90
P32-N
OR NBR-90
P42-N
BST
A
−
−
03, 06, 10
BSG
Item
Name of Parts
Part Numbers Qty.
38
40
O-Ring
O-Ring
OR NBR-90 P8-N
OR NBR-90 P14-N
2
2
Note: The Pilot Valve for item , see “DSG-01 Series Solenoid
Operated Directional Valves” of the catalogue “E: Directional
Controls”.
BST
A
−
−
03, 06, 10
BSG
(Models with Vent Restrictor)
