79Z40 - ESAB A-Size Oxygen Male to 3/16 Hose Barb Adapter

Upgrade Your Oxy-Fuel Setup with the ESAB 79Z40 Adapter

When it comes to maintaining and configuring your welding equipment, having the right fittings is the difference between a job well done and downtime. The ESAB 79Z40 Adapter is a specialized brass fitting designed to bridge the gap between A-Size oxygen equipment and 3/16-inch tubing. This part is crucial for welders operating light-duty torches, often referred to as "aircraft" or "jeweler" torches, which utilize the smaller A-Size thread standard (3/8"-24) rather than the standard B-Size found on heavy-duty industrial gear.

Constructed from durable, machined brass, this adapter is built to last. Brass is the material of choice for oxygen fittings due to its spark resistance and durability under pressure. The adapter features a male threaded end that fits into female A-Size outlets, and a barbed tail designed to grip 3/16-inch rubber gas hose securely. The threads are cut to standard Right-Hand specifications, ensuring that this fitting can only be used with oxygen or inert gas lines, thereby maintaining the critical safety distinction from fuel gas lines.

Welders often encounter situations where a hose needs repair or a custom length needs to be fabricated. The ESAB 79Z40 allows you to terminate a raw 3/16" hose directly into an A-Size port. This is particularly useful for custom manifold setups or when adapting vintage equipment to modern hoses. To ensure a safe working environment, always secure the hose to the barb using an appropriate clamp or ferrule and test for leaks using a soapy water solution before igniting your torch.

Applications and Use Cases

• Torch Repair: Replace worn-out inlet connections on light-duty torch handles.
• Hose Fabrication: Create custom-length oxygen hoses for specific bench-top applications.
• Regulator Adaptation: Connect small medical or lab-grade regulators to standard welding hoses.
• Safety Compliance: Ensure proper thread directionality for oxygen service.