Model "POSR-2" Pilot Operated Pressure Reducing Regulator,Tfe Gaskets; 3" Size; Sales Kit B; Main Valve - Ductile Iron Body, SST Cylinder, Ductile Iron Bonnet,;Mounting Position "H"; S2 Hard Trim: Main-416SST Seat,17-4ph Plug,Pilot-416SST,302SST;Diaphragm; 5-15 PSIG Range Spring