5500 Series Rev D Pilot Operated Pressure Relief Vent With Pipe Away; ASME 150 Flange Connection; 2" Inlet Size; 3" Outlet Size; Carbon Steel Body With Special Alloy C276 Trim And Carbon Steel Diaphragm Support Plate; Fluorocarbon Elastomer (FKM) Actuator Diaphragm, Buna-N Pilot Seat And Pallet Diaphragm; 2.1" - 12.0" WC Pressure Spring Range; With Special Remote Sensing, Pilot Exhaust To Atmosphere