Logic Elements Technical Information
Poppet Type
VLP 12/A5
OPERATION
The VLP 12/A5 is a metric 12-size, normally-closed, pilot-to-close,
poppet-type, 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, suitable for use as a
high ow check valve when piloted with a small check valve; or a high
ow directional valve when piloted with a directional solenoid valve,
using four VLP 12/A5 valves. Eective use of logic elements is a key to
designing cost-eective circuits, and is limited only by the imagination
of the designer.
SPECIFICATION
Rated pressure 315 bar [4500 psi]
Rated ow at 7 bar
[100 psi]
Weight 0.30 kg [0.66 lb]
Cavity NCS12/3
Bias spring 2 bar [29 psi]
160 l/min
[42 US gal/min]
PERFORMANCE CURVE
Theoretical performance
bar
psi
250
200
26 cSt [125 SUS] hyd.oil @ 20° C[68°F]
20
15
SCHEMATIC
150
10
100
5
50
0
0
US gal/min
BC332375783111en-000101 • February 2020
l/min
10 20 504030
50 100 150
flow
1
P103 834E
2
200
LE - 13
Logic Elements Technical Information
Poppet Type
VLP 12/A5
DIMENSION
mm [in]
EXAMPLE CIRCUITS
Cross-sectional view
Check Valve
4-3 Way On-O Valve
=
ORDERING
INFORMATION
VLP 12/A5 - B - SE8S -V
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
Other housings available
LE - 14