Model "P1", Single Stage Pressure Reducing Regulator; 1/4" Size, Cv'=0.06; Brass Body, 6061 Al Spring Chamber; 302 SST W/Tefzel Ring Diaphragm,Pctfe Seat,316l SST Seat;Retainer,316l SST Poppet,Inconel X-750 Poppet Spring,Port;Configuration "C"; Fnpt End Connection; 2-100 PSIG Range Spring; 0-100 PSIG Outlet Gauge; No Inlet Gauge; Captured Vent; Self-Relieving