MODEL "1000HP-1+8" DIFF PRESS REG,DBL DIAPH,GRAPHITE/NBR GASKETS; 2" SIZE,GASEOUS JET; SALES KIT B; WCB BODY & SPRING CHAMBER WITH CLOSING CAP; S2 TRIM: METAL SEAT,CS CYLINDER,416SST PLUG,302SST DIAPHRAGM; NPT SCREWED; 10-40 PSIG RANGE SPRING; PER CASHCO DRAWING NUMBER 51080 - W/ KALREZ PUSHER POST O-RING; .023/.032 DIAPHRAGM SETTING, TFE TAPE ADJ. SCREW;