Danfoss CP701-4 Technical Information
Logic Elements Technical Information
Spool Type
CP701-4
OPERATION
The CP701-4 is a 12-size, normally open, pilot-to-open, springbiased differential-sensing logic element. It will modulate flow 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 flow controls, as well as a pressure control valve. A common application for this valve is as a pressure compensator when applied with a fixed, or adjustable orifice to create a pressurecompensated flow control. This ensures that flow rate, and resulting actuator speed is maintained regardless of pressure drop across the control orifice. Effective use of logic elements is a key to designing cost-effective circuits, and is limited only by the imagination of the designer.
SPECIFICATION |
SCHEMATIC |
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Rated pressure* |
350 bar [5075 psi] |
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Rated flow at 7 bar |
75 l/min |
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[100 psi] |
[20 US gal/min] |
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Weight |
0.26 kg [0.57 lb] |
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Cavity |
CP12-3S |
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* Rated Pressure based on NFPA fatigue test standards (at 1 Million Cycles).
PERFORMANCE CURVE
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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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<![if ! IE]> <![endif]>Pressure |
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Fully |
opened |
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87 |
6 |
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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 L/min |
20 |
40 |
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60 |
80 |
100 |
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Flow |
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US gal/min |
5.3 |
10.6 |
15.9 |
21.1 |
26.4 |
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BC332375783111en-000101 • February 2020 |
LE - 47 |
Logic Elements Technical Information
Spool Type
CP701-4
DIMENSION |
Cross-sectional view |
mm [in] |
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h 1.25 in |
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t 68-75 N.m |
1 |
[50-55 lbf.ft] |
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2 |
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3 |
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1-1/16-12 UN |
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55.9 |
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25.4 |
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[2.20] |
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[1.00] |
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EXAMPLE CIRCUITS
Compensated Circuit |
Proportional Pressure Reducing |
ORDERING |
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INFORMATION |
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CP701 - 4 - B - 12S - 080 |
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Differential |
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Control |
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Seals |
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Pressure |
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Seal kit |
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bar |
[psi] |
B |
= Buna-N |
120335 |
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030 |
= |
2.1 |
[30] |
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V |
= Viton |
120336 |
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050 |
= |
3.5 |
[50] |
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Housing and ports |
Housing P/N |
Pilot port |
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080 |
= |
5.5 |
[80] |
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100 |
= |
6.9 |
[100] |
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0 |
= |
No housing |
No houisng |
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150 |
= 10.3 |
[150] |
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4B |
= |
AL, 1/2 BSP |
CP12-3S-4B/2B |
= 1/4 BSP |
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6B |
= |
AL, 3/4 BSP |
CP12-3S-6B/2B |
= 1/4 BSP |
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10S |
= |
AL, #10 SAE |
CP12-3S-10S/4S |
= #4 SAE |
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12S |
= |
AL, #12 SAE |
CP12-3S-12S/4S |
= #4 SAE |
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BC332375783111en-000101 • February 2020 |
LE - 48 |
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