Model No. AE2004LX This single-stage one-gauge regulator is designed to step the pressurised contents of a compressed gas cylinder down to a pressure that can be used in Oxy/Acetylene Cutting/Welding or Argon/CO2 Shielded MIG / TIG welding. Single chamber gas control. Fits cylinders with vertical outlet valves. One gauges display- Bottle contents and output pressure. Pressure controlled by the centre dial. Maximum outlet pressure 3.5 Bar. Maximum inlet pressure 20 Bar. Left hand thread. BS EN ISO 2503:2009..