Series 10 Line Regulator, Single Stage: 316L Stainless Steel | 3-Port, L to R | 1/4" FNPT Inlet & Outlet | 0-50 PSI Control Range | With Gauge | 0.07 Cv | 316L Diaphragm w/ Tezel Sealing Ring | PCTFE Seat | Electroless Nickel Plated Aluminum Knob | Cleaned for Oxygen Service