55B26DC600A0000000

5500 Series Rev D Pilot Operated Pressure Relief Vent With Pipe Away; Mates With PN16 Flange Connection; 2" Inlet Size; 2" Outlet Size; 316 Stainless Steel Body And Bolt-In Seat Ring; FFKM 1 Pilot Seat With FEP Pallet And Actuator Diaphragms; 12.1" - 18.0" wc Pressure Spring Range; Opt-A: Internal Sensing With Pilot Exhaust To Atmosphere, Backflow Preventer, And Manual Blowdown Valve