3100200 - Harris 355-2 Argon/CO2 Flowmeter Regulator CGA-580

Reliable Gas Control for Industrial Environments

The Harris Model 355-2AR-580 is a robust industrial flowmeter regulator designed to deliver precise control of shielding gases in demanding manufacturing and fabrication environments. This unit ingeniously combines a pressure regulator and a flowmeter into a single, compact brass assembly, reducing the footprint on gas cylinders while maintaining high performance. Engineered for use with Argon and Carbon Dioxide (CO2), the Model 355-2 is an essential component for ensuring consistent gas coverage during welding processes.

Technically, the regulator is pressure compensated to 20 PSIG, which ensures that the flow reading remains accurate even if there are back-pressure fluctuations downstream. The internal mechanism features a neoprene diaphragm for responsive pressure regulation and a one-piece encapsulated seat design. This seat assembly includes an internal filter specifically designed to protect the PTFE Teflon seat from particulate contamination, a common cause of regulator failure in industrial settings. The brass body and bonnet provide exceptional durability against the wear and tear of daily shop use.

The flowmeter section features a durable, easy-to-read flow tube protected by a rugged cover. It offers dual calibration, allowing operators to accurately set flow rates for either Argon or CO2 without needing conversion charts. The unit is capable of delivering flow rates up to 140 SCFH, making it versatile enough for a wide range of applications, from light-duty TIG welding to heavy-duty MIG operations. The sensitive needle valve is engineered for fingertip control, permitting highly accurate flow settings that stay put once adjusted. This product is UL listed, conforms to CGA-E-4 standards, and is proudly made in the USA, backed by a 7-year warranty.