316L SS BPR Back Pressure Regulator ,Cv: 0.3, Ports Style: 1 in 1 out, Maximum control pressure: 250 psig, Pressure control ranges: 0 to 25 psig,0 to 50 psig,0 to 100 psig,0 to 250 psig, Inlet Ports: 1/4" Female NPT, Outlet Ports: 1/4" Female NPT,Knob handle.