The REF Series Flowmeter Regulator models combine a single stage piston regulator with a dual calibrated flow tube to provide a compact, lightweight, economical solution for all GMAW and GTAW welding applications. The REF Series, with its durable brass piston, is designed to meet all the needs of the professional welder. Industrial Flowmeters and Regulators, REF Series Compact Flowmeter regulators, Western , Western REF-4-PD,FLOWMETER REGULATOR CGA 320.
