Anderson Greenwood (AGCO) P/N M1VIS-4-SG, Series M1, Valves 2-Block, 1-Equalize, Connections 1/2"FNPT Process x 1/2"FNPT Instrument, Body 316SS, Packing Teflon, Seat Integral, Rating 6000 PSIG at 200 F, 4000 PSIG at 500 F, NACE MR0175, AGCO Valve Manifold