Danfoss CP703-2 Technical Information
Logic Elements Technical Information
Spool Type
CP703-2
OPERATION
The CP703-2 is a 20-size, normally closed, vent-to-open, springbiased differential-sensing logic element. It will modulate flow from 1 to 2 based on the spring control pressure, inlet pressure at port 1, and pilot pressure at port 3.
APPLICATION
Common applications include: pump unloading, pilot-operated relief valve (mechanical or proportional), sequence valve
and selector circuit. 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 |
210 bar [3045 psi] |
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Rated flow at 7 bar |
340 l/min |
2 |
[100 psi] |
[90 US gal/min] |
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Weight |
1.18 kg [2.60 lb] |
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Cavity |
CP20-3S |
3 |
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1 |
PERFORMANCE CURVE |
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Theoretical performance |
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Pressure drop |
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psi |
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bar |
33 cSt [154 SUS] hyd.oil at 38°C [100 °F] |
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160 |
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10 |
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140 |
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120 |
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8 |
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100 |
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6 |
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80 |
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60 |
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4 |
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40 |
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2 |
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1 |
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2 |
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20 |
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FULLY OPENED |
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Flow |
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0 |
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0 |
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80 |
160 |
240 |
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320 |
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400 L/min |
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0 |
20 |
40 |
60 |
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80 |
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100 US gal/min |
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BC332375783111en-000101 • February 2020 |
LE - 39 |
Logic Elements Technical Information
Spool Type
CP703-2
DIMENSION |
Cross-sectional view |
mm [in] |
50.8
[2.00]
EXAMPLE CIRCUITS
ORDERING INFORMATION
1 5/8 - 12 UN THD. |
h 1.88 in |
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t 217 - 231 N.m |
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[160 - 170 lbf.ft] |
CP703 - 2 - B - 16S - 080
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Differential control |
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pressure |
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Seals |
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bar |
[psi] |
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Seal kit |
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050 |
= |
3.4 |
[50] |
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B |
= Buna-N |
120380 |
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080 |
= |
5.5 |
[80] |
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V |
= Viton |
120381 |
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100 |
= |
6.9 |
[100] |
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Housing and ports |
Housing P/N |
Pilot port |
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130 |
= |
9.0 |
[130] |
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150 |
= 10.3 |
[150] |
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0 |
= |
No housing |
No housing |
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8B |
= |
AL, 1 BSP |
CP20-3S-8B/2B |
= 1/4 BSP |
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10B |
= |
AL, 1-1/4 BSP |
CP20-3S-10B/2B |
= 1/4 BSP |
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16S |
= |
AL, #16 SAE |
CP20-3S-16S/4S |
= #4 SAE |
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20S |
= |
AL, #20 SAE |
CP20-3S-20S/4S |
= #4 SAE |
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other housings available
BC332375783111en-000101 • February 2020 |
LE - 40 |
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