Brass bottle pressure regulator suitable for argon applications up to a maximum inlet pressure of 200 bar. It is designed to mount directly on a W 21.8 x 1/14 bottle with a female threaded port. It has a 6 mm hose barb to connect a hose. The flow setting ranges from 0 to 20 l/min. The mounted pressure gauge indicates the inlet pressure and the flow meter indicates the outlet flow. The regulator is equipped with a shut-off valve for on/off control. In addition to that, it is made in accordance to DIN EN ISO 2503, which is related to gas welding equipment.