Logic Elements Technical Information
US gal/min
100
120
140
160
Logic Elements Catalog
Spool Type
LE20-CPC
OPERATION
The LE20-CPC is a 20-size, normally-closed, pilot-to-close, spool-type,, spring
biased dierential-sensing logic element. It will modulate ow from 1 to
2 based on the spring control pressure, inlet pressure at port 1, and pilot
pressure at port 3.
APPLICATION
Common applications include load-sensing bypass compensator for a xed
displacement pump with single or multiple actuators as well as bypass-type
pressure-compensated ow control. 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 210 bar [3045 psi]
Rated ow at 7 bar
[100 psi]
340 l/min
[90 US gal/min]
Weight 1.19 kg [2.62 lb]
Cavity CP20-3S
PERFORMANCE CURVE
Theoretical performance
bar
psi
10
8
6
80
60
4
40
2
20
0
0
0
BC332375783111en-000101 • February 2020
3
Pressure drop
33 cSt [154 SUS] hyd.oil at 38°C [100 °F]
1
2
FULLY OPENED
80
20
160
40 80
320
240
60 100
SCHEMATIC
2
1
Flow
400
L/min
LE - 27
Logic Elements Technical Information
Spool Type
LE20-CPC
DIMENSION
mm [in]
1
EXAMPLE CIRCUITS
79.30
[3.12]
Cross-sectional view
1.875 in.
1-5/8-12 UN
217-231 Nm [160-170 lbf-ft]
2
3
56.62
[2.23]
LE20-CPC
Double Acng Cylinder with Proporonal Speed
Control, Unloading Valve and Circuit Relief
ORDERING
INFORMATION
LE20-CPC-5.5-B-00
Logic Element,
20 Size Cavity
Normally Closed,
Pilot-to-Close
Differential Control Pressure
5.5 = 5.5 bar [80 psi]
7.0 = 7 bar [100 psi]
10.0 = 10.0 bar [150 psi]
15.0 = 15.0 bar [218 psi]
BC332375783111en-000101 • February 2020
Proporonal Bypass Flow Control
Housing and ports
00 = No Housing
8B = Al, 1 BSP
10B = Al, 1-1/4 BSP
16S = Al, #16 SAE
20S = Al, #20 SAE
Seals Seal Kit
B = Buna-N 120380
V = Viton 120381
Dump and Relief Valve for a Fixed Pump
Housing Part #
No Housing
CP20-3S-8B/2B
CP20-3S-10B/2B
CP20-3S-16S/4S
CP20-3S-20S/4S
Pilot Port
1/4 BSP
1/4 BSP
#4 SAE
#4 SAE
LE - 28
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