Danfoss CP702-4 Technical Information

Logic Elements Technical Information

154 SUS (33 cSt) hyd. oil @ 100° F (38° C)

Spool Type

CP702-4

OPERATION

The CP702-4 is a 16-size, normally open, pilot-to-open, spring-biased
dierential-sensing logic element. It will modulate ow from 2 to 1 based
on the spring control pressure, outlet pressure at port 1, and pilot pressure
at port 3.

APPLICATION

Common applications include: pre-compensator for proportional directional
control or ow controls, as well as a pressure control valve. A common application
for this valve is as a pressure compensator when applied with a xed, or adjustable
orice to create a pressure-compensated ow control. This ensures that ow rate,
and resulting actuator speed is maintained regardless of pressure drop across the
control orice. Eective use of logic elements is a key to designing cost-eective
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]

Weight 0.38 kg [0.83 lb]

Cavity SDC16-3S

114 l/min

[30 US gal/min]

PERFORMANCE CURVE

psi bar

203

174

145

116

87

58

29

Theoretical performance

14

12

10

8

6

Press ure drop

4

2

SCHEMATIC

Fully opened

0

BC332375783111en-000101 • February 2020

80 120 160 200

40L/min

10.6US gal/min

Flow

21.1 31.7 42.3 52.8

LE - 49

Logic Elements Technical Information

CP702- 4 - B

-

16S

-

Differential Control Pressure

Spool Type
CP702-4

DIMENSION

mm [in]

1

EXAMPLE CIRCUITS

Compensated Circuit

Cross-sectional view

23

1-5/16-12 UN

54.6

[2.15]

39.6

[1.56]

Proportional Pressure Reducing

h 1.50 in

122-136 N.m

t

[90-100 lbf.ft]

CP702-4

ORDERING
INFORMATION

Seal Option

Code Seal Material Seal kit

B Buna 120033

V Viton 120034

Housings & Ports

0: Cartridge Only

6B: 3/4 BSP, AL

8B: 1 BSP, AL

12S: #12 SAE, AL

16S: #16 SAE, AL

Other Housings available

BC332375783111en-000101 • February 2020

Housing P/N

No Housing

CP16-3S-6B/2B

CP16-3S-8B/2B

CP16-3S-12S/4S

CP16-3S-16S/4S

Pilot port

1/4 BSP

1/4 BSP

#4 SAE

#4 SAE

080

Code

040

080

110

150

190

bar [psi]

2.8 [40]

5.5 [80]

7.6 [110]

10.3 [150]

13.1 [190]

LE - 50