Model "HP" Pressure Reducing Regulator,Graphite/Nbr Gaskets; 1" Size; Wcb Body & Spring Chamber; S36 Trim: 316SST With Tfe Seat,302SST Diaphragm; Opt-30: 600 Lb Raised Face Flanges; 10-40 PSIG Range Spring; Opt-1+6: Differental Construction With Closing Cap