AAA Products International, Inc. Solenoid Valve ESR6

Standard solenoid models are assembled for "Internal Pilot" operation; that is, the valves derive shifting pressure for the spool from the valve inlet port. The required pressure to shift the spool is dependent upon the operator style. If the valve must operate at other pressures or vacuum, then the solenoid operator must use an "External Pilot" source at a pressure between 25 PSI to 150 PSI. Valves that require external pilot pressure can be ordered from the factory with the "Z" Option or be converted in the field for "External Pilot" operation.