MODEL "DA1" PRESSURE REDUCING REGULATOR (SERIES I) BODY SIZE 1-1/2",STANDARD DIAPHRAGM CONSTRUCTION; BRONZE BODY & SPRING CHAMBER; SPECIAL 316L SST TRIM, SPECIAL C-TFE SEAT, BE-CU DIAPHRAGM, SST/TFE U-CUP STATIC SEAL, SST/TFE U-CUP DYNAMIC SEAL; WITH SPECIAL BODY WITH 1-1/2" COPPER TUBE ENDS; CUSTOMER TO ATTACH TUBE ENDS AFTER RECEIPT OF VALVE; 6" FROM END OF TUBE TO END OF BODY (BOTH ENDS); 15-45 PSIG RANGE SPRING; INTERNAL SENSING, STANDARD - FLOW TO OPEN DIRECTION; WITH SPECIAL 0-100 PSIG OUTLET PRESSURE GAUGE WITH BRASS WETTED MATERIALS; SHALL BE PRECLEANED, PURGED WITH ARGON GAS, BAGGED AND TAGGED IN AN INERT ARGON ENVIRONMENT;