MODEL "BQ" SALES A KIT FOR PRODUCT CODE: 1C2-3B57-1XX33263A; CRYOGENIC BACK PRESS RELIEF REGULATOR,NON-ASBESTOS GASKET; 1/4" INLETS,1/2" OUTLET; BRONZE BODY & SPRING CHAMBER (OPT-5),SPECIAL CLEANING #S-1134 (OPT-55); B5 TRIM: BRASS WITH TFE SEAT,PHOS.BRONZE DIAPHRAGM; NPT SCREWED; SPECIAL RANGE SPRING; PER CASHCO DRAWING NUMBER 33263