1B4-AS17-X3X57572A

MODEL "BQ" BACK PRESSURE RELIEF REGULATOR,GRAPHITE/NBR GASKETS 1/2" INLETS,1/2" OUTLET; CF8M BODY & SPRING CHAMBER; S1 TRIM: 316SST METAL SEAT,302SST DIAPHRAGM; SPECIAL END CONNECTIONS; 20-75 PSIG RANGE SPRING; PER SPQ NUMBER 57572 WITH SPECIAL CL150 RF END CONNECTIONS;