Logic Elements Technical Information
pressure drop
05
Pressure
Poppet Type, Double-Blocking
VLP 12/P2
OPERATION
The VLP 12/P2 is a metric 12-size, normally-closed, vent-to-open, poppet-type,
double-blocking, spring biased dierential-sensing logic element. It will provide
on/o ow control from 1 to 2 based on the spring control pressure, inlet
pressure at port 1, and pilot pressure at port 3.
APPLICATION
The valve provides on/o, leakage-free control in both directions, suitable for use as a
high ow relief valve when used with a relief valve to pilot. Common applications include:
pump unloading, pilot-operated relief valve, sequence valve and selector circuit. Eective
use of logic elements is a key to designing cost-eective circuits, and is limited only by the
imagination of the designer.
SPECIFICATION
SCHEMATIC
Rated pressure 315 bar [4500 psi]
Rated ow at 7 bar
[100 psi]
160 l/min
[42 US gal/min]
Weight 0.30 kg [0.66 lb]
Cavity NCS12/3
Bias spring 2 bar [29 psi]
PERFORMANCE CURVE
Theoretical performance
psi
bar
26 cSt [125 SUS] hyd.oil @ 20° C [68° F]
20
250
15
200
150
10
100
5
50
0
0
050 100 150 200
l/min
US gal/min
0102
flow
04030
BC332375783111en-000101 • February 2020
LE - 11
Logic Elements Technical Information
[2.48]
[0.57]
VLP 12/P2 - B - SE8S -V
Other housings available
Poppet Type, Double-Blocking
VLP 12/P2
DIMENSION
mm [in]
EXAMPLE CIRCUITS
38 mm
64-70N m
[47-52 lbf ft]
14.5
Cross-sectional view
M33x 2
3
2
1
63.0
ORDERING
INFORMATION
BC332375783111en-000101 • February 2020
Seals Seal kit
V=Viton 230000360
Omit =Buna-N230000130
Housing and portsHousing P/N
00 =No Housing No Housing
SE1/2 = AL,1/2 BSP NCS12/3-SE-1/2
SE3/4 = AL,3/4 BSP NCS12/3-SE-3/4
SE8S = AL, #8 SAE NCS12/3-SE-8S
SE12S = AL, #12SAE NCS12/3-SE-12S
LE - 12
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