5400 Series Rev C Pilot Operated Pressure Relief Vent End-Of-Line; 2" Inlet Size, Mates With Standard ASME 150# Flanged Connections; Raised Face Stainless Steel Body, Cover, And Seat Ring; 41.8" - 86.0" Wc Pressure Spring Range; FEP Actuator Diaphragm, Ffkm 1 Pilot Seals And Seat; Standard - Internal Sensing, Pilot Exhaust To Atmosphere