Model "1000HP" Pressure Reducing Regulator,Graphite/Nbr Gaskets; 1" Size,Gaseous Jet; Sales Kit B; Wcc Body,Wcb Spring Chamber; S2 Trim: 316SST Cylinder,416SST Plug With Metal Seat,302SST Diaphragm; Npt Screwed; 65-130 PSIG Range Spring; Opt-56: Special Clean Per Spec #S-1542