Danfoss CP461-1 Technical Information
Pilot Operated Check Valves Technical Information
Pilot to Close CP461-1
OPERATION |
This valve is a pilot-to-close check valve. |
SPECIFICATIONS |
Theoretical performance |
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psi |
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bar |
154 SUS (33 cSt) hyd. oil @ 100° F (38° C) |
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203 |
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14 |
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174 |
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12 |
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145 |
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10 |
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116 drop |
8 |
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87 |
<![if ! IE]> <![endif]>Pressure |
6 |
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free flow |
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58 |
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4 |
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29 |
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2 |
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0 |
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L/min |
40 |
80 |
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120 |
160 |
200 |
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Flow |
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US gal/min |
10.6 |
21.1 |
31.7 |
42.3 |
52.8 |
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Schematic
Specifications
Rated pressure |
210 bar [3000 psi] |
Rated flow at 7 bar |
60 l/min |
[100 psi] |
[16 US gal/min] |
Leakage |
6 drops/min @ |
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Rated pressure |
Weight |
0.21 kg [0.47 lb] |
Pilot ratio |
2.3:1 |
Cavity |
CP12-3S |
Note: A piston seal requires a 4.5 bar [65 psi] or greater return spring.
DIMENSIONS mm [in]
ORDERING INFORMATION
Cross-sectional view
1-1/16-12 UN-2A
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h 1.25 in |
1 |
t 68-75 N.m |
[50-55 lbf.ft] |
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2 |
3 |
55.9 |
12.7 |
[2.20] |
[0.50] |
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CP461 - 1 - B - 12S - 065 - 0 |
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Seals |
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Seal kit |
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B |
= Buna-N |
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120335 |
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V |
= Viton |
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120336 |
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Housing and ports |
Housing P/N |
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0 |
= |
No Housing |
No Housing |
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4B |
= |
Al, 1/2 BSP |
CP12-3S-4B/2B |
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6B |
= |
Al, 3/4 BSP |
CP12-3S-6B/2B |
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10S |
= |
Al, #10 SAE |
CP12-3S-10S/4S |
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12S |
= |
Al, #12 SAE |
CP12-3S-12S/4S |
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Other housings available
Piston seals
0 = No seals
S = Seals included
Crack |
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Pressure |
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bar |
[psi]] |
065 = 4.48 |
[65] |
BC332375625108en-000101 • February 2020 |
PO - 18 |
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