Danfoss CP458-2 User guide

Pilot Operated Check Valves Technical Information

6

Seals

r[psi]

Housing and po

SE2B
SE3B

O

Reverse Pilot to Open

CP458-2

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

2 1

Press ure drop

4

2

0

8L/min

2.1US gal/min

1 2

pilot open

16 24 32 40

Flow

4.26.3 8.5 10.

Cross-sectional view

Schematic

Specications

Rated pressure 210 bar [3000 psi]

Rated ow at 7 bar

[100 psi]

Leakage 6 drops/min @

Weight 0.07 kg [0.15 lb]

Pilot ratio 2.8:1

Cavity SDC08-3

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

greater return spring.

20 l/min

[5 US gal/min]

Rated pressure

1

2

ORDERING
INFORMATION

B=Buna-N 120250
V=Viton 120253

0=No Housing No Housing

=Al, 1/4 BSP SDC08-3-SE-2B

=Al, 3/8 BSP SDC08-3-SE-3B
4S =Al, #4 SAE CP08-3-4S
6S =Al, #6 SAE CP08-3-6S

ther housings available

BC332375625108en-000101 • February 2020

3/4-16 UNF-2A

3

40.6

[1.60]

CP458-2-B-6S-065-0

Seal kit

rtsHousing P/N

ht0.875 in

27-34 N.m

[20-25 lbf.ft]

6.4

[0.25]

Piston seals

0=No seals
S=Seals included

Crack
Pressure

ba

065=4.48 [65]

PO - 10