1000-0259 - Victor FM 371 Flowmeter for Argon, CO2, Helium - 5-150 SCFH

Precision Gas Flow Measurement for Industrial Applications

The Victor FM 371 Flowmeter Assembly (SKU: 1000-0259) is a professional-grade instrument designed for the accurate delivery of shielding gases in arc welding processes. Engineered to meet the rigorous demands of industrial and laboratory environments, this unit provides precise flow measurement for Argon, Carbon Dioxide (CO2), and Helium. Unlike standard cylinder regulators, the FM 371 is a dedicated flowmeter assembly intended for use with low-pressure piped systems or as an attachment to existing regulators, operating optimally at a calibrated inlet pressure of 25 PSIG.

Robust Design and Construction

Durability is a cornerstone of the Victor FM 371's design. The flow tube and outer cover tube are constructed from impact-resistant Lexan, a high-strength polycarbonate material capable of withstanding the physical stresses typical of heavy-duty welding shops. This robust construction ensures longevity even in severe applications where accidental impact might shatter traditional glass tubes. Furthermore, the cover tube incorporates an overpressure protection mechanism, adding a critical layer of safety for the operator and the equipment.

Accurate and Compensated Readings

Accuracy in gas delivery is essential for maintaining weld quality. The FM 371 features back-pressure compensation, a critical engineering attribute that ensures the flow reading remains accurate even if downstream line restrictions are present. Whether you are running long hoses or using accessories that create resistance, the flowmeter provides a true reading of the gas volume being delivered. The unit is calibrated to minimize surge, providing a stable flow rate of 5-50 SCFH for Argon and CO2, and 20-150 SCFH for Helium, covering a broad spectrum of MIG and TIG welding requirements.

Integration and Compatibility

Designed for versatility, the FM 371 utilizes standard 5/8"-18 RH connections for both inlet (Male) and outlet (Female). This allows for seamless integration into existing gas management systems, whether attached to a manifold drop or threaded onto a compatible pressure regulator. By separating the flow metering function from pressure regulation, users gain finer control over their shielding gas coverage, resulting in cleaner welds and reduced gas wastage.