52B26DC620A0000000

5200 Series Rev D Pilot Operated Pressure/Vacuum Relief Vent With Pipe Away; Mates With PN16 Flange Connection; 2" Inlet Size; 2" Outlet Size; 316 Stainless Steel Body, 316 Stainless Steel Bolt-In Seat Ring; FEP Actuator And Pallet Diaphragms, FFKM1 Pilot Seat; 12.1" - 18.0" wc Pressure Spring Range; 0.50 - 0.74 Oz/In2 Weight Loaded Vacuum Pallet Configuration; Epoxy Coated Carbon Steel Weight Material; Opt-A: Internal Sensing With Pilot Exhaust To Atmosphere, Backflow Preventer, And Manual Blowdown Valve; Standard Vacuum Protection Screen