Danfoss CP451-2 Technical Information
Pilot Operated Check Valves Technical Information
Reverse Pilot to Open CP451-2
OPERATION |
This valve is a pilot-to-open check valve. |
SPECIFICATIONS |
Theoretical performance |
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psi |
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bar |
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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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<![if ! IE]> <![endif]>Pressure |
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87 |
6 |
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free flow |
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58 |
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4 |
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pilot open |
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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 |
95 l/min |
[100 psi] |
[25 US gal/min] |
Leakage |
6 drops/min @ |
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Rated pressure |
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.
DIMENSIONS |
Cross-sectional view |
mm [in] |
1-1/16-12 UN-2A |
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h 1.25 in |
1 |
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t 68-75 N.m |
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[50-55 lbf.ft] |
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2 |
3 |
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55.9 |
12.7 |
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[2.20] |
[0.50] |
ORDERING
INFORMATION
BC332375625108en-000101 • February 2020 |
PO - 12 |
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