MODEL "DA4" SALES KIT FOR PRODUCT CODE: D4B-3MJ7-P7310MT0D; PRESSURE LOADED REDUCING VALVE (SERIES IV)-PLPRV BODY SIZE 3",STANDARD DIAPHRAGM CONSTRUCTION; BRONZE BODY & LOADING CHAMBER; M TRIM: MONEL TRIM WITH POLYALL SEAT,FLUOROSILICONE (FK) DIAPHRAGM; FLUOROSILICONE(FK) STATIC SEALS,TFE CAP SEAL W/FLUOROSILICONE(FK) ENERGIZER DYNAMIC SEAL,GF-TFE WIPER; 300# FF FLANGED END CONNECTIONS(500 WOG); 2-5 PSIG LOWER SPRING; INTERNAL SENSING,STD FLOW TO OPEN DIRECTION; NO LOADING OR PILOT DEVICE; OPT-55: SPECIAL CLEANING & PACKAGING FOR OXYGEN SERVICE PER SPEC #S-1134;