Why won’t a solenoid valve open even though power is supplied?

Is a solenoid valve failing to operate? The cause isn’t necessarily down to the solenoid coil.

Possible reasons include:

- Insufficient differential pressure in servo-controlled valves

- Contamination inside the valve

- Blocked or stiff moving parts

- Insufficient supply voltage under load

- Unsuitable operating conditions

Particularly important: With servo-controlled valves, a minimum differential pressure is often required for the valve to open reliably.

Our tip: Before replacing a valve, you should first check the electrical, hydraulic and pneumatic operating conditions.

If you want to learn more and find the most suitable solution for your processes, contact CSC-Automation!