0657-0003 - Victor QDA-20 Fuel Gas Quick Disconnect and Arrestor Set

Victor 0657-0003 QDA-20 Fuel Gas Arrestor/Disconnect Assembly

The Victor 0657-0003, also known as the QDA-20, is a premium safety and convenience accessory designed for professional oxy-fuel operators. This assembly is engineered to handle Fuel Gas (such as Acetylene, Propane, Propylene, and Natural Gas) and serves a dual purpose: it acts as a robust flashback arrestor and a high-efficiency quick-disconnect coupling. By integrating these two functions into a single compact unit, Victor Technologies provides a solution that enhances workplace safety without compromising operational speed.

Safety is paramount in oxy-fuel cutting and welding. The QDA-20 features a built-in flashback arrestor that extinguishes flames before they can travel back into the hose or regulator, preventing potential explosions. Additionally, a reverse flow check valve is incorporated to stop the accidental mixing of gases, which is a common cause of flashbacks. The unit is designed with an automatic shut-off valve that instantly stops gas flow when the coupling is disconnected, ensuring that fuel gas does not leak into the workspace during tool changes.

Efficiency is the second pillar of the QDA-20's design. In busy fabrication shops or field sites, operators often need to switch between cutting torches, heating nozzles, and welding attachments. Traditional threaded connections require wrenches and time-consuming manual labor. The Victor QDA-20 allows for a simple, snap-action connection and disconnection. This quick-connect functionality means you can swap tools in seconds without searching for a wrench, significantly boosting productivity over the course of a workday.

Constructed from high-quality brass, this assembly is built to withstand the rigors of heavy industrial use. It utilizes standard B-Size 9/16"-18 Left-Hand threads, making it compatible with the vast majority of professional fuel gas hoses and torch handles in North America. The distinct Left-Hand threading and specific design ensure it cannot be accidentally connected to an Oxygen line, preventing dangerous cross-connections.