T E C H N I C A L C A T A L O G
PRESSURE CONTROL VALVES
HYDRAULIC COMPONENTS
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
CONTENT
Direct operated valvesPilot operated valves
DIRECT OPERATED VALVES 5
Pressure relief valve VVP (NG 6, 10) 5
Pressure relief valve VVB2-10 (NG 6) 9
Pressure relief valve VPLB15 13
Pressure relief valve RT (NG 4) 17
PILOT OPERATED VALVES 21
Pressure relief valve RT (NG 6, 10) 21
Pressure relief valve VP-RT (NG 6, 10) 25
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
PRESSURE RELIEF VALVE VVP (NG 6, 10)
• NG 6, 10
• Up to 400 bar [5 801PSI]
• Up to 120 L/min [31.7 GPM]
• For fitting into a block.
• For independent mounting.
• Two pressure setting elements (set screw, rotary knob).
VVP-6, VVP-10
Operation Hydraulic symbol
These valves consist of a housing (1), a hardened seat (2), a poppet (3), with a damping
spool (4), a spring (5), and a pressure setting element (6).
The P-line of this pressure relief valve is connected with the hydraulic system. The
pressure of the hydraulic fluid acts on the front side of the pilot poppet (3), and the force of
the spring (5) set by the pressure setting element (6) is applied to the poppet from the
opposite side. When the system pressure exceeds the valve of the spring set by the
pressure setting element (6) the pilot poppet moves off the seat (2), and frees the flow of
the hydraulic fluid in the direction from P towards T.
The damping spol (4) prevents vibrations of the pilot poppet when opening or closing the
flow way of the hydraulic flow. Loosening of the pressure setting element is prevented by a
counternut (8).
Direct operated pressure relief valves type VVP are used to maintain and limit the pressure
in a hydraulic system.
Features
Size 610
Flow rate L/min [GPM] 50 [13.2] 120 [31.7]
Pressure setting range bar [PSI] To 400 [5 801]
Oil temperature range °C [°F] -30 to +70 [-22 to +158]
Viscosity range mm
2
/s [SUS] 2,8 to 380 [12.9 to 1 760]
Filtration NAS 1638 8
Mass
Execution A
Kg [lb]
0,4 [0.88] 0,5 [1.10]
Execution B 0,5 [1.10] 0,6 [1.32]
DIRECT OPERATED VALVES
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Dimensions
Connecting dimensions / connection P-VVP-6, P-VVP-10
9. Pressure setting by screw and protective cap.
10. Pressure setting by rotary knob.
12. O-ring, nominal size 6, 19,2 x 3.
O-ring, nominal size 10, 26 x 3.
13. Usit ring, nominal size 6, 17,4 x 24 x 1,5.
Usit ring, nominal size 10, 24,7 x 31 x 2.
Tightening torque for fixing:
Nominal size 6 Md=80 Nm [708 in.lbf].
Nominal size 10 Md=140 Nm [1 239 in.lbf].
Customer specified setting can be secured by means
of a stamp and a wire.
Type
a b Øc e Øf Øg Øh i j k l m n o Øp Ør s s1 s2
VVP-6
72
[2.83]
94
[3.70]
34
[1.34]
M28x
1,5
60
[2.36]
24,9
[0.98]
15
[0.59]
65
[2.56]
56,5
[2.22]
45
[1.77]
30
[1.18]
19
[0.75]
15
[0.59]
35
[1.38]
6
[0.24]
25H9
32
[1.26]
6
[0.24]
19
[0.75]
VVP-10
68
[2.67]
90
[3.54]
38
[1.50]
M35x
1,5
31,9
[1.25]
18,5
[0.73]
80
[3.15]
67,5
[2.66]
52
[2.05]
35
[1.38]
23
[0.90]
18
[0.71]
41
[1.61]
10
[0.39]
32H9
36
[1.42]
1. Oil discharge when fitted independently.
2. Oil supply when fitted independently.
3. Oil supply when fitted on a tank cover.
4. Oil discharge when fitted on a tank cover.
When fitting, the excess ports for oil supply and discharge
must be closed by means of suitable screw.
Size
Øa Øb c
dmass kg [lb]
6
59 d9
[2.32]
24
[0.94]
M18x1,5
60
[2.36]
2,5
[5.51]
10
69 d9
[2.72]
28
[1.10]
M22x1,5
24
[2.75]
2,9
[6.39]
1. Port ’’P’’.
2. Return line ’’T’’.
3. Locking screws - P line.
4. Locking screws - T line.
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
'P-Q Performance curves
Model code
PV
Pressusre setting range
To 50 [725]
50
To 100 [1 450]
100
To 200 [2 900]
200
To 315 [4 568]
315
To 400 [5 801]
400
Size
Size 6
6
Size 10
10
-
-
Seal type
NBR seals for mineral oil HL,HLP to DIN
51524
No designation
FPM seals for HETG, HEES, HEPG to
VDMA 24568 and ISO 15380
E
Special requirements to be briefly specified
-
-
*
V
-
Pressusre setting element
Set screw with protective cap
A
Rotary knob
B
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
PRESSURE RELIEF VALVE VVB2-10 (NG 6)
• NG 6
• Up to 210 bar [3 045 PSI]
• Up to 60 L/min [15.8 GPM]
• Direct in-line mounting.
• Threaded connections to ISO 9974 (Metric), ISO 1179 (BSPP/Gas).
• Five different pressure setting elements.
VVB2-10-...
Features Hydraulic symbol
Size 6
Operating pressure bar [PSI] 210 [3 045]
Flow rate L/min [GPM] 60 [15.8]
Pressure setting range bar [PSI] 120 [1 740]; 160[2 320]; 200 [2 900]
Oil temperature range °C [°F] -10 to +70 [14 to +158]
Viscosity range mm
2
/s [SUS] 15 to 380 [69.5 to 1 760]
Filtration ISO 4406-1999 19/17/14
Mass Kg [lb] 1.85 [4.08]
Seal type NBR seals for mineral oil HL, HLP, to DIN 51524
'P-Q Performance curves
Flow
Diff. pressure
Measured at 50°C [122°F] and viscosity of 32 mm
2
/s [148 SUS].
A = 120 bar [1 740 PSI]
B = 160 bar [2 320 PSI]
C = 200 bar [2 900 PSI]
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Hydraulic components - Pressure control valves POCLAIN HYDRAULICS
Dimensions
Inner hexagonal
key
Inner hexagonal
key and
protective cap
Knob Fixed setting Exterior key
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
Model code
BV
0
Pressusre setting range
120 bar [1740 PSI]
120
160 bar [2 320 PSI]
160
200 bar [2 900 PSI]
200
-
-
Threaded connections
M18 x 1.5
No designation
G 3/8
3/8
Special requirements to be briefly specified
-
-
*
V
-
Pressusre setting element
Inner hexagonal key
A
Inner hexagonal key and protective cap
B
Knob
G
Fixed setting
K
Exterior key
S
2
1
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
PRESSURE RELIEF VALVE VPLB15
• To 15 bar [217 PSI]
• To 70 L/min [18.5 GPM]
• Limit creates back pressure in open loop.
• Limit case pressure in case of free-wheeling.
VPLB15
Features Hydraulic symbol
Flow
70 L/min [20 GPM]
Mass 3 kg [7 lb]
'P-Q Performance curves
Without external drain
With external drain
Flow
Diff. pressure
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Dimensions
Installation
Valve mounting position Indifferent
Chassis mounting
Ref. Quantity Class
N.m [lb.ft] ± 10 %
(as per standard DIN 912)
M10 2 8.8 50 [37]
Hydraulic connections
Port Function Connection Pressure
bar [PSI]
N.m [lb.ft] ± 10 %
(as per standard DIN 912)
01
Input
M 27 x 2 (DIN 3852)
50 max. [max. 725]
200 [148]
1
Output
M
Pressure measurement M14 x 1.5 (DIN 3852) 45 [33]
F
Drain M16 x 1.5 (DIN 3852) 0 [0] 60 [44]
With external drain
Without external drain
1
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
Model code
LP
1 5B
10
0 00
04
V
0
00 0
External drain
Without
0
With
E
High pressure relief valve
1.5 bar [21.7 PSI]
002
10 bar [145 PSI]
010
15 bar [217 PSI]
015
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Hydraulic components - Pressure control valves POCLAIN HYDRAULICS
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
PRESSURE RELIEF VALVE RT (NG 4)
• NG 4
• Up to 350 bar [5 076 PSI]
• Up to 4 L/min [1.1 GPM]
• For independent fitting into a block.
• Two pressure setting ranges.
RT-4
Operation Hydraulic symbol
Pilot operated pressure relief valves type RT are used for maintaining and limiting the
pressure in a hydraulic system.
These valves consist of a housing of cartridge design (1), main spool insert (2), pilot
poppet (4), spring (5) and pressure setting element (6).
The P-line of this pressure relief valve is connected with the hydraulic system. The
hydraulic medium pressure acts on the front side of the main spool insert. The pressure
balance in the system and pressure chamber holds this pressure relief valve in closed
position till the pressure in system exceeds this value the pilot poppet moves off the valve
seat, freeing the pilot oil discharge through the bore (10). A pressure drop in the pressure
chamber rises the main spool insert, thus clearing the hydraulic medium flow way in the
direction from P towards port T.
Loosening of the pressure setting element (6) is prevented by a counternut (11).
Features
Size 4
Flow rate L/min [GPM] 4 [1.1]
Pressure setting range bar [PSI] To 315 [4 568]
Oil temperature range °C [°F] -20 to +70 [-4 to +158]
Viscosity range mm
2
/s [SUS] 15 to 380 [69.5 to 1 760]
Filtration NAS 1638 8
Mass Kg [lb] 0,15 [0.33]
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Hydraulic components - Pressure control valves POCLAIN HYDRAULICS
Dimensions
1. Housing.
12. O-ring 13x1.
13. O-ring, size 4,6 16.3x2,4.
size 10 20x2,5.
14. Pressure setting element.
15. Counternut.
17. PE cover.
Tightening torque for fixing Md=30 Nm.
The value set on the pressure setting element is protected by
means of a lead stamp Ø11 and a wire Ø1,1 mm.
Size
a b c d D L1L2L3L4L5L6 M
4
96
[3.78]
64
[2.52]
53
[2.09]
6
[0.24]
20,5
[0.81]
36
[1.42]
32
[1.26]
30
[1.18]
26
[1.02]
14
[0.55]
4,8
[0.19]
M20x1
Note: Ports P and T can be located optionally at any place on
the circumference.
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
'P-Q Performance curves
Model code
Flow
Diff. pressure
Measured at 50°C [122°F] and viscosity of 32 mm
2
/s [148 SUS].
Operation pressure
Lowest settable
pressure
Flow
Out of range
T
4
Pressusre setting range
To 100 [1 450]
100
To 315 [4 568]
315
Size
Size 4
4
-
-
Seal type
NBR seals for mineral oil HL,HLP to DIN
51524
No designation
FPM seals for HETG, HEES, HEPG to
VDMA 24568 and ISO 15380
E
Special requirements to be briefly specified
-
*
R
-
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
PRESSURE RELIEF VALVE RT (NG 6, 10)
• NG 6, 10
• Up to 350 bar [5 076 PSI]
• Up to 100 L/min [26.4 GPM]
• For independent fitting into a block.
• Two pressure setting ranges.
RT-6, RT-10
Operation Hydraulic symbol
Pilot operated pressure relief valves type RT are used for maintaining and limiting the
pressure in a hydraulic system.
These valves consist of a housing of cartridge design (1), main spool insert (2) with a
spring (3), pilot poppet (4), spring (5) and pressure setting element (6).
The P-line of this pressure relief valve is connected with the hydraulic system. The
hydraulic medium pressure acts on the front side of the main spool insert. The bores (7,8)
permit the introduction of pilot oil into the pressure chamber (9) and the application of
pressure to the opposite side of the main spool insert and the front side of the pilot poppet.
The pressure balance in the system and pressure chamber holds this pressure relief valve
in closed position till the pressure in system exceeds this value the pilot poppet moves off
the valve seat, freeing the pilot oil discharge through the bore (10). A pressure drop in the
pressure chamber rises the main spool insert, thus clearing the hydraulic medium flow way
in the direction from P towards port T.
Loosening of the pressure setting element (6) is prevented by a counternut (11).
Features
Size 6 10
Flow rate L/min [GPM] 60 [15.8] 100 [26.4]
Pressure setting range bar [PSI]
To 315 [4 568]
Oil temperature range °C [°F]
-20 to +70 [-4 to +158]
Viscosity range mm
2
/s [SUS]
15 to 380 [69.5 to 1 760]
Filtration NAS 1638
8
Mass Kg [lb] 0,15 [0.33] 0,18 [0.40]
PILOT OPERATED VALVES
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Dimensions
1. Housing.
12. O-ring 13x1.
13. O-ring, size 4,6 16.3x2,4.
size 10 20x2,5.
14. Pressure setting element.
15. Counternut.
17. PE cover.
Tightening torque for fixing Md=30 Nm.
The value set on the pressure setting element is protected by
means of a lead stamp Ø11 and a wire Ø1,1 mm.
Size
a b c d D L1L2L3L4L5L6 M
6
96
[3.78]
64
[2.52]
53
[2.09]
6
[0.24]
20,5
[0.81]
36
[1.42]
32
[1.26]
30
[1.18]
26
[1.02]
14
[0.55]
4,8
[0.19]
M20x1
10
97
[3.82]
61
[2.40]
50
[1.97]
10,5
[0.41]
24,5
[0.96]
40
[1.57]
36
[1.42]
34
[1.34]
29,7
[1.17]
15
[0.59]
5,2
[0.20]
M24x1
Note: Ports P and T can be located optionally at any place on
the circumference.
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
'P-Q Performance curves
Model code
Size 6 Size 10
Diff. pressure
Diff. pressure
Measured at 50°C [122°F] and viscosity of 32 mm
2
/s [148 SUS].
Operation pressure
Operation pressure
Flow Flow
Flow Flow
Lowest settable
pressure
Out of range
Lowest settable
pressure
Out of range
Size 6 Size 10
T
Pressusre setting range
To 100 [1 450]
100
To 315 [4 568]
315
Size
Size 6
6
Size 10
10
-
-
Seal type
NBR seals for mineral oil HL,HLP to DIN
51524
No designation
FPM seals for HETG, HEES, HEPG to
VDMA 24568 and ISO 15380
E
Special requirements to be briefly specified
-
*
R
-
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Hydraulic components - Pressure control valves POCLAIN HYDRAULICS
08/01/2010 25
POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
PRESSURE RELIEF VALVE VP-RT (NG 6, 10)
• NG 6, 10
• Up to 350 bar [5 076 PSI]
• Up to 100 L/min [26.4 GPM]
• Pilot operated.
• Connecting dimensions to ISO 4401.
• For vertical stacking - sandwich plate design.
• Two pressure setting ranges.
VP-RT-10, VP-RT-6
Operation Hydraulic symbol
These valves consist of a stack plate (1), pressure relief valve housing (2), main spool
insert (3) with a spring (4), pilot poppet (5), spring (6) and pressure setting element (7).
The P-line of this pressure relief valve is connected with the hydraulic system. The
hydraulic medium pressure acts on the front side of the main spool insert (3). The bores
(8,9) permit the introduction of pilot oil into the pressure chamber (10) and the application
of pressure to the opposite side of the main spool insert.
This pressure relief valve remains in closed position till the system pressure exceeds the
valve set at the spring (6). A pressure rise in the system above the value set by the
pressure setting element (7), provokes the movement of the pilot poppet (5) of the seat,
freeing the pilot oil discharge through the bores (9) and (11). A pressure drop in the
pressure chamber (10) rises the main spool insert (3), thus clearing the hydraulic medium
flow in the direction from port P towards port T.
Loosening of the pressure setting element is prevented by a counternut (12).
Pilot operated pressure relief valves type VP-RT of sandwich plate design, for vertical
stacking, are used for maintaining and limiting the maximum pressure in a hydraulic
system.
Features
Size 6 10
Flow rate L/min [GPM] 50 [13.2] 100 [26.4]
Pressure setting range bar [PSI]
To 315 [4 568]
Oil temperature range °C [°F]
-20 to +70 [-4 to +158]
Viscosity range mm
2
/s [SUS]
15 to 380 [69.5 to 1 760]
Filtration NAS 1638
8
Mass Kg [lb] 1,2 [2.64] - 1,7 [3.75] (D) 2,6 [5.73]
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Hydraulic components - Pressure control valves POCLAIN HYDRAULICS
Dimensions
The value set on the pressure setting element
is protected by means of a lead stamp Ø11
[0.43 dia.] and a wire Ø1,1 [0.04 dia.].
Size
L1 L2 L3 L4 L5
VP-RT-6-EA
- 154 [6.06] -
90 [3.54]
9 [0.35]
VP-RT-6-EB
--
154 [6.06] 40,5 [1.59]
VP-RT-6-EP
--
VP-RT-6-D
249 [9.80] - - 121 [4.76] 40 [1.57]
VP-RT-6-DAB
245 [9.64] - - 116,5 [4.59] 38 [1.50]
VP-RT-10-EP
156 [6.14] - 95,5 [3.76]
28,5 [1.12]
-
VP-RT-10-EA
161 [6.34] -
100,5 [3.96]
-
VP-RT-10-EB
- 161 [6.34] 18 [0.71] -
Required quality of the
mating surface.
13. O-ring, Size 6: 9,25x1,78
Size 10: 12x2.
14. Nameplate.
VP-RT-6
VP-RT-10
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POCLAIN HYDRAULICS Hydraulic components - Pressure control valves
Direct operated valvesPilot operated valves
'P-Q Performance curves
Model code
Size 6 Size 10
Flow
Diff. pressure
Diff. pressure
Measured at 50°C [122°F] and viscosity of 32 mm
2
/s [148 SUS].
Flow
Flow
Flow
Operating pressure
Operating pressure
Lowest settable
pressure
Lowest settable pressure
Lowest settable pressure
Out of range
Lowest settable
pressure
Out of range
Size 6 Size 10
T
Pressure setting range
To 100 [1 450]
100
To 315 [4 568]
315
Size
Size 6
6
Size 10
10
-
-
Seal type
NBR seals for mineral oil HL,HLP to DIN
51524
No designation
FPM seals for HETG, HEES, HEPG to
VDMA 24568 and ISO 15380
E
Special requirements to be briefly specified
-
*
R
-
P
-
V
-
Relief function from to
A
T
EA
B
T
EB
P
T
EP
A
T and B T (for size 6 only)
D
A
B and B A (for size 6 only)
DBA
08/01/10
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without prior notification.The information contained in this document must be confirmed by Poclain Hydraulics before any order is
submitted.
Illustrations are not binding.
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