Model "1000HP" Pressure Reducing Regulator,Graphite/Nbr Gaskets; 1" Size,Opt-27: Viscous Jet; Cf8m Body,Ductile Iron Spring Chamber; S5 Trim: 316SST Cylinder,416SST Plug With Metal Seat,Fluorocarbon;Elastomer (Fkm) Diaphragm; Npt Screwed; 10-40 PSIG Range Spring