Air Compressor Unloader Valve | Solenoid + Check Valve | 220V AC | 5 Sizes

This air compressor unloader valve is a brass solenoid valve with a built-in check valve, used on oil-free compressors to release trapped pressure from the head when the motor switches off. The coil is rated 220V AC and the valve comes in five thread and port sizes, from M14 x 1.5mm to M19 x M19 x 1/2 inch, so it can be matched to the connection on your compressor. Features and benefits: - Solenoid and check valve in one brass body - the power-off valve relieves pressure when the coil is de-energised, while the check valve stops air flowing back - 220V AC coil with a published working range of AC175V to 253V - runs from standard UK mains supply - 100% ED duty rating - the coil is rated for continuous energising - IP65 protection rating printed on the coil - protected against dust and water jets - Power cable with bare copper wire ends - wire it in parallel with the compressor motor supply - Five size options (A to E) - choose the thread or port size that matches your compressor - Coil labels show 6.0VA with 29mA on one and 5.5VA on another - low power draw Applications: - Oil-free air compressor pressure relief on motor shut-off - Unloading the compressor head so it restarts without back pressure - Replacing a worn or leaking solenoid unloader valve - Air pump and small pneumatic equipment repairs In the box: 1 x solenoid valve and 1 x check valve. Note: Isolate the compressor from the mains and release all air pressure before fitting. Wiring is for a competent person. Check the thread or port size against your old valve before choosing an option, and do not run it from any voltage outside the marked coil range.