MODEL "31-N" SALES B KIT FOR PRODUCT CODE: LPW-54N7-6T000000A; LOW PRESS REDUCING GAS SERVICE REG. GRAPHITE/NBR GASKET 1" BODY SIZE,NO.6 (0.375") ORIFICE; CF3M BODY & LOWER CASE,WCB SPRING CHAMBER,ARRANGEMENT/POSITION 1, STANDARD CONSTRUCTION INCLUDES INTERNAL SENSING UNLESS OPTION - "ES" IS SPECIFIED; S40N TRIM: 316LSST INTERNALS,BUNA-N SEAT & DIAPHRAGM WITH REINFORCING CORE,GLASS FILLED NYLON LOAD RING,