Model B7 Back Pressure Regulator; 1/2" Size, Angle Configuration, 1.3 Cv; 316L Stainless Steel Body And Trim, 316L Stainless Steel Spring Chamber; Stainless Steel Trim With Stellite Orifice, Stellite Seat, Port Configuration D; FNPT End Connections; 50 - 1150 PSIG Range Spring; 0 - 2000 PSIG Inlet Gauge