Anderson Greenwood (AGCO) P/N M9VIS-4M, Series M9, Body 316SS, Packing Teflon, Seat Integral, Connections 1/2"MNPT Inlet x 1/2" MNPT Outlet, Vent Hole, Rating 6000 PSIG at 200 F, 4000 PSIG at 500 F, AGCO Block & Bleed Valve