MODEL "DA1" SALES KIT FOR PRODUCT CODE: D19-DM77-1Z1000M0E; PRESSURE REDUCING REGULATOR (SERIES I) BODY SIZE 2",STANDARD DIAPHRAGM CONSTRUCTION; BRONZE BODY, 316L SST SPRING CHAMBER; MONEL M TRIM, PA SEAT, FK DIAPHRAGM FK STATIC SEAL, SST/TFE U-CUP DYNAMIC SEAL; NPT END CONNECTION; OPT-55: CLEANED FOR OXYGEN SERVICE PER SPEC #S-1134;