Model "P7", High Flow/Sensitivity Pressure Reducing Regulator; 1/2" Size, Cv'=0.8; 316l SST Body And Trim, 316l SST Spring Chamber; Tfe Main Valve Seat, Ctfe Vent Valve Seat;Porting Configuration "A"; Fnpt End Connection; 10-300 PSIG Range Spring; No Outlet Gauge; Non-Vented Construction Opt-(6) For Spring Loaded Design