52A66DB72000000000

5200 Series Rev D Pilot Operated Pressure/Vacuum Relief Vent With Pipe Away; Mates With ASME 150 Flange Connection; 6" Inlet Size; 6" Outlet Size; 316 Stainless Steel Body, 316 Stainless Steel Bolt-In Seat Ring; FEP Actuator Diaphragm With BUNA-N Pilot Seat And Pallet Diaphragms; 18.1" - 36.0" wc Pressure Spring Range; 0.50 - 0.74 Oz/In2 Weight Loaded Vacuum Pallet Configuration; Epoxy Coated Carbon Steel Weight Material; Standard: Internal Sensing, Pilot Exhaust To Main Valve Outlet With Backflow Preventer; Standard Vacuum Protection Screen