The fixed capacity PRX 04 piston reducer is designed to attach directly to the oxygen tank. Visualization is enhanced with a gauge that allows you to see the tank content. The reducer has an incoming pressure of 200 bar and an outgoing pressure of 3.5-4 bar, with a pre-fixed calibrated safety valve to 7 bar. The device has a fixed capacity of 6 L/min with a UNI connection and an outgoing connection. The outlet connection is 1/4 gas with an inlet valve. The PRX 04 weights 500 g (1.10 lbs).