21519 - ESAB Oxygen Regulator Inlet Nipple CGA-540 x 1/4 NPT

Reliable Oxygen Connections with ESAB 21519

The ESAB 21519 Inlet Nipple is a critical component for maintaining the safety and efficiency of your oxygen regulation systems. Designed to bridge the gap between your high-pressure gas cylinder and the regulator body, this nipple is engineered with precision and durability in mind. Manufactured from high-quality brass, it offers superior resistance to corrosion and wear, ensuring a long service life even in demanding industrial environments. The brass construction is also essential for oxygen service, as it is non-sparking and compatible with the specific safety requirements of oxidizing gases.

This specific model features a CGA-540 connection on the inlet side, which is the standard designated fitting for oxygen cylinders in the United States and Canada. This ensures that the nipple cannot be accidentally connected to incompatible gas cylinders, preventing dangerous cross-contamination. On the outlet side, the nipple sports a 1/4-inch National Pipe Thread (NPT) Male connection. The tapered design of the NPT thread allows for a tight, metal-to-metal seal that becomes progressively stronger as it is tightened, minimizing the risk of high-pressure leaks that could compromise safety or waste expensive gas.

With a length of 2.5 inches, the ESAB 21519 provides ample clearance between the cylinder valve and the regulator body. This extended length is particularly useful when mounting regulators on crowded manifolds or when using regulators with large gauges that might otherwise obstruct the cylinder valve handle. Whether you are repairing an existing regulator or assembling a custom manifold system, this inlet nipple delivers the fit and performance professionals trust. It is a direct replacement for worn or damaged stems, helping you extend the life of your valuable gas equipment.

At Josef Gas, we understand that the integrity of your welding and cutting equipment depends on every single component. That is why we stock genuine ESAB parts like the 21519 Inlet Nipple. Proper maintenance of your gas apparatus, including the regular inspection and replacement of inlet fittings, is key to operational safety. Ensure your oxygen setup is leak-free and compliant with industry standards by choosing high-quality brass fittings designed for the job.