Indirect Acting Solenoid Valves

About Indirect Acting Solenoid Valves

Indirect acting solenoid valves are more suited to process industry applications that always have media pressure in a pipeline. In a normally closed state, indirect solenoids operate by allowing a small amount of the process media into an orifice in the inlet port of the valve and into a chamber on top of the diaphragm. Under its own weight and volume, it applies pressure to the diaphragm, which is forced onto the valve seat and reinforcing it’s closed position.

When the solenoid coil is energised, the diaphragm lifts off the seat to open the valve, forcing the process media in the chamber back through the orifice in the inlet port and back into the flow stream, where it continues its journey through the valve and down the pipework. An indirect solenoid valve can also be referred to as a pilot operated solenoid valve, or pilot assist solenoid valve, as the process media acts as a pilot for the valve operation.

The fact that the process media acts as a pilot for operation means that indirect acting solenoid valves have a lower power consumption than direct acting valves, increasing efficiency. They are also more cost effective and occasionally more compact in their design. Indirect solenoids are available in a range of body and seal materials to suit almost any process industry application.

For more information regarding our range of Indirect Acting Solenoid Valves, please contact the MGA Controls sales team on +44 (0)1704 898980 or sales@mgacontrols.co.uk.

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