55AH6DC70050000000

5500 Series Rev D Pilot Operated Pressure Relief Vent With Pipe Away; Mates With ASME 150 Flange Connection; 2" Inlet Size; 3" Outlet Size; 316 Stainless Steel Body And Bolt-In Seat Ring; FFKM 1 Pilot Seat With FEP Pallet And Actuator Diaphragms; 18.1" - 36.0" wc Pressure Spring Range; Opt-5: Internal Sensing With Pilot Exhaust To Main Valve Outlet, Backflow Preventer, And Field Test Connection