Model "1000HP-1+8" Diff Press Reg,Dbl Diaph,Graphite/Nbr Gaskets; 2" Size,Gaseous Jet; Sales Kit B; Ductile Iron Body & Spring Chamber With Closing Cap; B1 Trim: Metal Seat,Brass Cylinder,416SST Plug,302SST Diaphragm; Npt Screwed; 10-40 PSId Range Spring; Tfe Tape Adjusting Screw; Set Diaphragm .023 To .032 High