Danfoss CP451-2 Technical Information

Pilot Operated Check Valves Technical Information

8

Reverse Pilot to Open

CP451-2

OPERATION

SPECIFICATIONS

DIMENSIONS

mm [in]

This valve is a pilot-to-open check valve.

Theoretical performance

psi bar

203

174

145

116

87

58

29

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

14

12

10

8

free flow

6

Press ure drop

4

2

0

40L/min

21.1 31.7 42.3 52.

10.6US gal/min

pilot open

80 120 160 200

Flow

Cross-sectional view

Schematic

Specications

Rated pressure 210 bar [3000 psi]

Rated ow at 7 bar

[100 psi]

Leakage 6 drops/min @

Weight 0.21 kg [0.46 lb]

Pilot ratio 3:1

Cavity CP12-3S

Note: A piston seal requires a 4.5 bar [65 psi] or

greater return spring.

95 l/min

[25 US gal/min]

Rated pressure

ORDERING
INFORMATION

1-1/16-12 UN-2A

ht1.25 in

1

55.9

[2.20]

3

12.7

[0.50]

2

68-75 N.m

[50-55 lbf.ft]

BC332375625108en-000101 • February 2020

PO - 12