5500 Series Pilot Operated Pressure/Vacuum Vent W/ Pipe Away; ASME 150 Flange Connection; 3" Inlet Size; 3" Outlet Size; Carbon Steel Body, 316 SST Bolt-In Seat Ring; Fep-Tfe Actuator Diaphragm, Buna-N Pilot Seat, Fep Pallet Diaphragms; 2.1" - 12.0" Wc Pressure Spring Range; Opt-2: Remote Sensing, SST Pilot - Exhaust To Main Valve Outlet