MODEL "DA1" PRESSURE REDUCING REGULATOR (SERIES I) BODY SIZE 2",STANDARD DIAPHRAGM CONSTRUCTION; CF3M BODY,316L SST SPRING CHAMBER; P TRIM: 17-4PH SST TRIM WITH V-TFE SEAT,1-PLY FLUOROCARBON ELASTOMER (HK)(@0.050 IN.) & 1-PLY TFE DIAPHRAGM; FLUOROCARBON ELASTOMER(HK) STATIC SEALS,TFE U-CUP W/SST ENERGIZER DYNAMIC SEAL