Single Stage 2 Gauge Argon Regulator Flowmeter SE 0-40LPM for Mig use - Developed using tried and tested materials combined with the latest technology the ENGWELD regulator is more accurate and safer when used with cylinders of ever increasing pressure under the rigorous demands from modern industry. 300 bar rated and are designed to fully meet the requirements of BS EN ISO 2503 and to provide reliable service and a prolonged service life. * Safety Pressure Gauge - safest possible design * High Flow Safety Valve - safely vents excess pressure * Captive Pressure Adjusting Knob - impossible to remove * 300 Bar Valve - compatible with all gases * Gas Inlet Filter - prevents egress of foreign particles into regulator * Unperforated Diaphragm - less possibility of leaks * Brass Body - rugged, made by CNC machines