Gorton Heating Corporation GDS8 Vapor Equalizing Valve, 1/8 in, Steel, Male Connection Type, 140 to 240 deg F

INSTALL where a large amount of air must be vented (NOT TO BE USED ON HAND FIRED SYSTEMS UNLESS RADIATOR SUPPLY VALVES ARE LEFT ON ALL THE TIME.), 1/8" connection. VENTING CAPACITY ... Equal to 27 ordinary type air valves.

Gorton Heating Corporation Vapor Equalizing Valve, 1/8 in, Steel, Connection Type: Male, 140 to 240 deg F, Model D