Danfoss CP300-4 Technical Information
Logic Elements Technical Information
11
14
17
20
3
2
1
Pressure Compensator
CP300-4
OPERATION
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 orice. The
pressure compensator is located downstream of the orice 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 orice
and will vary it’s restriction in order to maintain a constant pressure dierential across the control
orice, hence maintaining a constant ow rate.
APPLICATION
Common applications include any circuit that requires compensated ow control going to one actuator
or circuit. Pressure compensators oer the circuit designer capability to add pressure compensation
to any xed or variable orice. This ensures that ow, and resulting actuator speed, are maintained
regardless of system and working pressures
SPECIFICATION
Rated pressure 210 bar [3045 psi]
Rated ow at 7 bar
[100 psi]
Weight 0.13 kg [0.29 lb]
Cavity SDC10-3
40 l/min
[10.6 US gal/min]
SCHEMATIC
Theoretical performance
PERFORMANCE CURVE
psi bar
3
4
5
6
87
58
29
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
14
12
10
8
6
Press ure drop
4
2
0
Fully opened
8L/min
2.1US gal/min
16 24 32 40
Flow
4.26.3 8.5 10.6
BC332375783111en-000101 • February 2020
LE - 69
Logic Elements Technical Information
Pressure Compensator
CP300-4
DIMENSION
mm [in]
1
EXAMPLE CIRCUITS
Cross-sectional view
23
7/8-14 UNF
46.2
[1.82]
19.1
[0.75]
Post-Compensated Proportional Flow Control
ht1.00 in
41-47 N.m
[30-35 lbf.ft]
ORDERING
INFORMATION
Seals
B=Buna-N120027
V=Viton 120028
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
BC332375783111en-000101 • February 2020
CP300-4-B-8S-0-080
Seal kit
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]
LE - 70
Loading...