MODEL "DA3" PRESSURE LOADED REDUCING VALVE (SERIES III)-PLPRV BODY SIZE 1",STANDARD DIAPHRAGM CONSTRUCTION; CF3M BODY,316L SST LOADING CHAMBER; MONEL K-500/S PLUG/CAGE/PISTON,FLUOROSILICONE(FK) DIAPHRAGM,VIRGIN TFE SEAT; FLUOROSILICONE(FK) STATIC SEALS,TFE U-CUP W/SST ENERGIZER DYNAMIC SEAL;OPT-55: SPECIAL CLEANING & PACKAGING FOR OXYGEN SERVICE PER SPEC# S-1134