CP521-21 Solenoid Valve
English Chinese (Simplified)

comatrol hydraulic cartridge valves



Solenoid Valve, Spool Type, 2-Position, 3-Way, Push-Type, 12-size.  When de-energized, the CP521-21 allows flow from port 1 to port 2, while port 3 is blocked. When energized, flow is allowed from port 3 to port 1, while port 2 is blocked. Follow the "Operating Envelope" limits to ensure shifting of the valve during operation.  This valve comes standard with a one-direction, push-pin manual override.





These spool-type valves are commonly used in a selector circuit, or as an on/off pilot control for a directional spool valve. Solenoid spool-type valves are direct acting and respond quickly to coil voltage input. Spool valves will have some leakage due to spool clearance, so if your application requires no leakage at the working port(s), apply a low leakage poppet valve(s), like PO check valve, counterbalance valve, etc., in addition to this solenoid valve. This valve can operate with an inlet pressure of 315 bar for 400,000 cycles. In case of inlet from port 2 this value can be increased to 600,000 cycles.





Rated Presssure 240 bar [3500 psi]
Maximum Rated
flow at 7 bar
[100 psi]
60 l/min
[16 US gal/min]
Weight 0.80 kg [1.76 lb]
Cavity CP12-3

Robust Coil


D14E 30 Watt 

Robust Nut P/N 321567




Performance Curve 

f_250_250_16777215_00_images_solenoid-valves_CP521-21_CP521-21_performance1.jpg     f_250_250_16777215_00_images_solenoid-valves_CP521-21_CP521-21_performance2.jpg  




Example Circuits


Ordering Information




Product Documents and Downloads
Download this file (CP521-21 - 3D STP Files.zip)CP521-21 - 3D STP Files.zip118 kB01-22-2014
Download this file (CP521-21 Catalog Page.pdf)CP521-21 Catalog Page.pdf293 kB05-14-2015
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