0781-2703 - Victor GRF400-320 CO2 Flowmeter Regulator, CGA 320, 2-40 SCFH

Victor GRF400-320 Regulator/Flowmeter Overview

The Victor GRF400-320 (SKU: 0781-2703) is a compact, precision-engineered flowmeter regulator designed specifically for light-duty industrial and welding applications utilizing Carbon Dioxide (CO2). Part of the renowned GRF400 series, this unit integrates the functions of a pressure regulator and a flowmeter into a single, streamlined body. This integration eliminates the need for separate components, reducing potential leak points and saving valuable space on the cylinder.

Engineered with a CGA 320 inlet connection, this regulator connects directly to standard CO2 cylinders. It features a flow range of 2 to 40 SCFH (Standard Cubic Feet per Hour), making it suitable for various shielding gas applications where precise flow control is required. The vertical flow tube utilizes a high-visibility ball float, allowing operators to easily monitor and adjust gas flow rates at a glance. The outlet connection is a standard 5/8"-18 RH(F), compatible with most standard inert gas hoses used in the industry.

One of the critical technical considerations for this unit is its duty cycle rating. When used with Carbon Dioxide, the GRF400-320 is rated for a 20% duty cycle. This specification is vital because CO2 expands rapidly from liquid to gas, causing a significant temperature drop that can lead to regulator freezing if high flow rates are maintained continuously. This unit is optimized for intermittent use or lower flow rates typical of light fabrication, maintenance, and repair operations.

The body is constructed from durable brass, ensuring longevity and resistance to shop environments. It includes an internal pressure relief mechanism to protect the low-pressure side of the system. Whether for MIG welding mild steel or other industrial processes requiring CO2, the Victor GRF400-320 provides a reliable, economical solution for gas management.