LINE2design Solid Brass Oxygen Regulator - 0-25L 2 Valves Silver The Solid Brass Oxygen Regulator is extremely high quality. This LINE2design all brass O2 regulator is our best-selling regulator. Chrome-plated solid brass body. 3000 psi maximum inlet pressure. Sintered bronze inlet filter for longer service life. Inlet Connection: CGA540 or CGA870 (1) Hose barb outlet (2) DISS Demand valves Weight: 1.50 lbs. Flow settings include: 0, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 15, 25 PM