4-13
Catalogue HY11-3500/UK
VBY_UK.INDD CM_13.04.2010
Pilot Operated Pressure Relief Valve
Series VBY
Parker Hannifin GmbH
Hydraulic Controls Division
Kaarst, Germany
4
Characteristics
Pilot operated relief valves of the series VBY consist of a
pilot with manual adjustment and a spool type main stage.
The valves need to be externally drained.
The series VBY can also be used as pressure sequence
valve, because of the high pressure capability in the outlet
port and the external drain port.
Features
• Subplatemountingacc.toISO5781
• Mainstagespooltype
• Pilotstageseatedtype
• 4pressurestages
• 2adjustmentmodes
- screw with hexagon socket
- Key lock
VBY*A06
VBY*A10
VBY*A06
VBY*A10
VBY*A06 VBY*A10
* Port B for remote control, otherwise to be blocked * Port X for remote control, otherwise to be blocked
4-14
VBY_UK.INDD CM_13.04.2010
Catalogue HY11-3500/UK
Pilot Operated Pressure Relief Valve
Series VBY
Parker Hannifin GmbH
Hydraulic Controls Division
Kaarst, Germany
4
Ordering Code / Technical Data
Nominal
size
VBY
Pressure
relief valve
Pressure
stages
Adjustment Seals
Ordering code
Design
series
(not required
for ordering)
Technical data
Nominal size NG06 NG10
Design Pilot operated pressure relief valve, spool type
Interface SubplatemountingaccordingtoISO5781
Mounting position unrestricted
Ambient temperature [°C] -20...+80
Max. operating pressure [bar] P, A, B 315 A, B, X 315
External drain port pressure [bar] T 100 Y 100
Pressure stages [bar] 64, 160, 210, 315
Fluid temperature [°C] -20...+70
Viscosity, recommended [cSt]/
permitted [cSt]/
[mm²/s]
[mm²/s]
30...50
20...380
Filtration ISO4406(1999)18/16/13
Nominal flow [l/min] Seep/Qcurves
Pilot oil flow [cm³/min] approx. 500 approx. 1000
MTTF
D
value [years] 75
Weight [kg] 2.4 4.5
Code Seals
N NBR
V FPM
Code Adjustment
A
Screw with
hexagon socket
H
Turning knob
with key lock
Code Pressure stages
064 up to 64 bar
160 up to 160 bar
210 up to 210 bar
315 up to 315 bar
Code Nominal size
06 NG06
10 NG10
4-15
Catalogue HY11-3500/UK
VBY_UK.INDD CM_13.04.2010
Pilot Operated Pressure Relief Valve
Series VBY
Parker Hannifin GmbH
Hydraulic Controls Division
Kaarst, Germany
4
Characteristic Curves
p/Q performance curves VBY
Max. 64 bar NG06 Max. 64 bar NG10
Max. 160 bar NG06
Max. 210 bar NG06
Max. 315 bar NG06
Max. 210 bar NG10
Max. 160 bar NG10
Max. 315 bar NG10
NG10
* for all pressure stages
* for all pressure stages
All characteristic curves measured with HLP46 at 50°C.
NG06
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VBY_UK.INDD CM_13.04.2010
Catalogue HY11-3500/UK
Pilot Operated Pressure Relief Valve
Series VBY
Parker Hannifin GmbH
Hydraulic Controls Division
Kaarst, Germany
4
Dimensions
NG06
Mounting pattern ISO 5781-03-04-0-00
Surface finish Bolt kit
FPM
BK375
4xM5x30
DIN91212.9
7.6Nm
±15%
SK-VBY-A06V
4-17
Catalogue HY11-3500/UK
VBY_UK.INDD CM_13.04.2010
Pilot Operated Pressure Relief Valve
Series VBY
Parker Hannifin GmbH
Hydraulic Controls Division
Kaarst, Germany
4
Dimensions
NG10
Mounting pattern ISO 5781-06-07-0-00
Surface finish Bolt kit
FPM
BK389
4xM10x50
DIN91212.9
63 Nm
±15%
SK-VB/VM-A10V
4-18
VBY_UK.INDD CM_13.04.2010
Catalogue HY11-3500/UK
Parker Hannifin GmbH
Hydraulic Controls Division
Kaarst, Germany
4
Notes