2026-09-28

The valve is not opening when the coil is energized..

If valve is not opening when the coild energized;

Power supply might be low, wrong or none. It should be sending to correct voltage and frequency to the coil.

Solution

Check your power supply, coil and connections.

Wrong position valve might be chosen. Normally Closed Solenoid Valve goes open position when it is energized and Normally Open Solenoid Valve is closed when it is energized.

Solution

Check the position of the valve by its order code

Pilot Orifice might be clogged.

Solution

Take the core tube(stem) apart and clean the all components in it and orifice as well.

Diaphragm, seal or piston might be damaged.

Solution

Replace with the new sealing part

The plunger might be stucked in the tube or adherent on the orifice due to dirt or corrosion

Solution

Disassemble the core tube and clean the plunger and inner surface of the core tube

Inlet pressure might be higher than the maximum operating pressure

Solution

Check if the line pressure is comply with the product's informed pressure on catalogue

The differeantial pressurue (P1-P2) might not be enough to operates the valve

Solution

Check your line pressure. Indirect (pilot operated) solenoid valves need an appropriate differantial pressure to work and never be able to work in closed loop nor gravity feed systems.

Coil might be burnt out

Solution

Replace with the original one