MODEL "DA4" PRESSURE LOADED REDUCING VALVE (SERIES IV)-PLPRV; BODY SIZE 2",STANDARD DIAPHRAGM CONSTRUCTION; SALES KIT A; CF3M BODY,316L SST LOADING CHAMBER; M TRIM: MONEL K-500/S TRIM WITH POLYALL SEAT,17-7PH SST DIAPHRAGM,; FLUOROSILICONE(FK) STATIC SEALS,TFE U-CUP W/SST ENERGIZER DYNAMIC SEAL; PER CASHCO DRAWING NUMBER 52776 - INTERNAL SENSING,LOWER RETURN SPRING; STD FLOW DIRECTION; OPT-56 SPECIAL CLEANING PER CASHCO S-1542 FOR INERT GAS SERVICE;