Model 1049 Rev A Pilot Operated Vent Valve; Stainless Steel Body; 2" Inlet X 3" Outlet, Mates With ASME 150 RF Flanged End Connections; FFKM 1 Soft Seats; Option 1: Internal Sensing With Pilot Exhaust Tubed To Main Valve Outlet; BUNA-N Actuator Diaphragm With FEP Liners; 3.2 - 14.0 psi Pressure Range