Model "1000HP" Pressure Reducing Regulator,Graphite/Nbr Gaskets; Parts Kit B, 1" Size,Liquid Jet; Bronze Body,Ductile Iron Spring Chamber; B2 Trim: Brass Cylinder & Plug With Buna-N (Nbr) Seat,Neoprene;(Bc) Diaphragm; Npt Screwed; 55-80 PSIG Range Spring