WESCV-31L - Western Enterprises CV-31L Fuel Gas Regulator Check Valve B-Size LH

Reliable Backflow Prevention for Industrial Gas Systems

The Western Enterprises CV-31L Check Valve is a critical safety component designed for professional oxy-fuel welding and cutting operations. Engineered to prevent the reverse flow of gases, this check valve installs directly onto the regulator outlet bushing, providing an immediate safeguard against the mixing of gases in the hose or regulator, which can lead to dangerous flashbacks or equipment damage. Manufactured from high-quality brass, the CV-31L offers superior durability and resistance to corrosion, ensuring a long service life even in demanding industrial environments.

This model is specifically calibrated for Acetylene and other Fuel Gases, featuring standard B-Size 9/16"-18 UNF Left-Hand (LH) threads to prevent accidental cross-connection with oxygen equipment. With a maximum pressure rating of 50 PSIG and a substantial flow capacity of 1200 SCFH, it matches the flow requirements of most standard cutting and welding torches, ensuring that safety does not come at the cost of performance. The valve mechanism is highly sensitive to reverse pressure, sealing instantly to block backflow while offering minimal resistance to forward flow during normal operation.

Installation is straightforward and secure. The unit features a female inlet that attaches to the regulator and a male outlet for hose connection. Its compact design, measuring just 1.64 inches in length, ensures it does not obstruct the workspace or add excessive weight to the regulator assembly. As a UL Listed product made in the United States, the Western Enterprises CV-31L meets stringent safety standards required for laboratory, industrial, and welding applications. Regular inspection and testing of check valves are recommended to maintain optimal safety protocols in any gas distribution system.