4200 Series Rev C Spring Loaded Pressure/Vacuum Relief Vent With Pipe Away; Mates With ASME 150 Flange; 6" Inlet And 6" Outlet; 316 Stainless Steel Body, 316 Stainless Steel Bolt-In Seat Ring; EPDM Pallet Diaphragm; Spring Loaded; 10.1-12 psig Pressure Set Point; Spring Loaded; 10.1-12 psig Pressure Set Point; Spring Loaded - No Weight Material; Pressure And Vacuum Flame Screen