WES135 - Acetylene Regulator Outlet Bushing 1/4 NPT to A-Size Left Hand

Precision Brass Outlet Bushing for Acetylene Service

The Western Enterprises 135 is a specialized regulator outlet bushing designed to facilitate the connection between standard pressure regulators and light-duty gas hoses. This component is critical for maintaining the integrity of gas delivery systems, specifically in applications utilizing Acetylene. The bushing features a 1/4-inch National Pipe Thread (NPT) Male connection on one end, which screws directly into the regulator body, and a 3/8"-24 Unified Fine (UNF) Left Hand Male connection on the other, commonly referred to as "A-Size."

Manufactured from high-quality brass, this fitting offers superior resistance to corrosion and mechanical wear, essential attributes for components exposed to industrial gas environments. The use of brass also ensures non-sparking properties, a vital safety consideration when handling fuel gases. The precision machining of the threads guarantees a secure engagement with mating components, minimizing the risk of leaks which could lead to hazardous situations or gas wastage.

The "A-Size" designation refers to the specific thread pitch and diameter (3/8"-24) used typically for lighter-duty welding and brazing equipment, such as those found in HVAC repair kits, jewelry manufacturing, and light fabrication. The inclusion of Left-Hand threads is a mandatory safety standard for fuel gases under Compressed Gas Association (CGA) guidelines. This reverse threading prevents the accidental connection of fuel gas hoses to oxygen regulators, thereby eliminating the potential for catastrophic equipment failure or combustion. The WES135 ensures that your assembly remains compliant with these rigorous safety standards while providing a reliable mechanical interface.

Technicians and engineers specifying this part should note that the NPT side requires a suitable thread sealant (such as PTFE tape rated for gas service) to achieve a pressure-tight seal against the regulator body. The flared hose connection side relies on the mechanical seating of the hose nut and gland, and typically does not require additional sealant. This bushing is an indispensable component for MRO (Maintenance, Repair, and Operations) inventories, allowing for the immediate repair of damaged regulator outlets or the custom fabrication of gas manifolds.