639210 - ESAB 88-4 CVL Fuel Gas Regulator Check Valve

ESAB 88-4 CVL Regulator Check Valve Overview

The ESAB 88-4 CVL is a high-performance regulator-mount check valve designed specifically for fuel gas service. In industrial oxy-fuel cutting and welding applications, safety is paramount. This device serves as a critical line of defense against reverse flow, a condition where gas flows back from the torch into the hose and regulator, potentially creating a hazardous mixture. By installing the 88-4 CVL directly onto the regulator outlet, operators ensure that gas flows in only one direction—towards the torch.

Constructed from durable brass, this check valve is engineered to withstand the rigors of daily industrial use. It features standard "B" size (9/16"-18) left-hand threads, making it compatible with the vast majority of industrial fuel gas regulators (acetylene, propane, propylene, natural gas). The internal mechanism is sensitive enough to open under normal flow pressure while providing a reliable seal against backpressure. This component is an essential part of a compliant and safe oxy-fuel system, helping to protect expensive regulator equipment and, more importantly, the operator.

The compact design of the 88-4 CVL ensures it does not add excessive weight or leverage to the regulator outlet, maintaining the stability of the gas cylinder setup. Regular inspection and testing of check valves are recommended to ensure continued functionality. This unit is sold individually and is ready for immediate installation on standard fuel gas regulators.