WA Technology”s patent-pending Flow Rate Limiter is designed to provide a maximum shielding gas flowrate for most popular flowmeters. This prevents welding operators from using excess gas flow that is not only wasteful but often creates a turbulent shield causing air to be pulled into the gas stream. The device allows the user to set the desired maximum flowrate. Once the max. flowrate is established, the system clamps over the flow control knob by tightening a set screw, preventing increases from the desired level. Welders Scan still reduce the flow from that predetermined level as the application dictates. A locking system is available to assure settings are maintained. No alterations of the flowmeter are needed. The device may be used on regulators/flowmeters employed in cylinder shielding gas supply or those used on pipeline gas supply.