HUMPHREY 500A SERIES AIR PILOT VALVES
Humphrey 500A Series Air Pilot Valves feature the exclusive double diaphragm poppet design in a ½ NPT ported 3 way, 2 position air pilot valves. The double diaphragm poppet valve design has no sliding seals and therefore requires no lubrication. The 500A valves are highly tolerant to airline contaminants. The isolated pilot enables the valve to be used for air, oil, water, and other gases.