Model "1000LP" Pressure Reducing Regulator,Tfe/Al-Silicate Gaskets; 1" Size,Liquid Jet; Cast Iron Body & Spring Chamber; S1 Trim: Metal Seat,316SST Cylinder & Plug,302SST Diaphragm; Npt Screwed; 12-30 PSIG Range Spring; Opt-12+14: One-Step Reduced Orifice,Integral Seat; Opt-1: Closing Cap