MODEL "DA1" PRESSURE REDUCING REGULATOR (SERIES I) BODY SIZE 1-1/4",STANDARD DIAPHRAGM CONSTRUCTION; CAST IRON(ENC) BODY & SPRING CHAMBER; 17-4PH SST PLUG/CAGE/PISTON GUIDE BEARING,NEOPRENE DIAPHRAGM, POLYALL SEAT; BUNA-N(NBR) STATIC SEALS,TFE CAP SEAL W/BUNA ENERGIZER DYNAMIC SEAL, GF-TFE WIPER; NPT FEMALE SCREWED END CONNECTIONS; 5-20 PSIG RANGE SPRING; INTERNAL SENSING,STD FLOW DIRECTION