LE - Logic Elements
CP300-4
LE - 68
11141720 • Rev AD • April 2015
Logic Elements Catalog
PERFORMANCE CURVE
APPLICATION
SPECIFICATION
OPERATION
SCHEMATIC
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
2
0
29
psi bar
Pressure drop
8L/min
Flow
2.1US gal/min
4
6
8
10
12
14
58
87
116
145
174
203
16 24 32 40
4.26.3 8.5 10.6
Fully opened
3
2
1
The CP300-4 is a 10-size, ow control, restrictive type pressure compensator. Restrictive-type pressure
compensators are three-ported valves that work in series with a xed or variable control orice. The
pressure compensator is located downstream of the orice and is spring-biased to an open position
as shown in the example circuit. The spool senses the pressure on either side of the control orice
and will vary its restriction in order to maintain a constant pressure dierential across the control
orice, hence maintaining a constant ow rate.
Rated pressure 210 bar [3000 psi]
Rated ow at 7 bar
[100 psi]
40 l/min
[10.6 US gal/min]
Weight 0.13 kg [0.29 lb]
Cavity SDC10-3
Theoretical performance
CP300-4
Pressure Compensator
Common applications include any circuit that requires compensated ow control going to one actuator
or circuit. Pressure compensators oer the circuit designer capability to add pressure compensation
to any xed or variable orice. This ensures that ow, and resulting actuator speed, are maintained
regardless of system and working pressures
LE - Logic Elements
CP300-4
LE - 69
11141720 • Rev AD • April 2015
Logic Elements Catalog
ORDERING
INFORMATION
EXAMPLE CIRCUITS
DIMENSION
46.2
[1.82]
19.1
[0.75]
7/8-14 UNF
1
23
h
t
1.00 in
41-47 N
.
m
[30-35 lbf
.
ft]
CP300-4-B-8S-0-080
Seals
Seal kit
B=Buna-N120027
V=Viton 120028
Differential
Control
Pressure
bar[psi]
040=2.8[40]
080=5.5[80]
110=7.6[110]
150=10.3 [150]
190=13.1 [190]
Housing and portsHousing P/N
0=No Housing No Housing
SE3B=AL,3/8 BSP SDC10-3-SE-3B
SE4B=AL, 1/2 BSP SDC10-3-SE-4B
6S = AL, #6 SAE CP10-3-6S
8S = AL, #8 SAE CP10-3-8S
Other housings available
Cross-sectional view
mm [in]
Pressure Compensator
CP300-4
Priority-type pressure
Compensator operation
Post-Compensated Proportional
Flow Control