The Uniweld UA2LA is a brass tank adapter designed for connecting an A2L compatible gas cylinder (refrigerants/gases) to a regulator or hose with matching thread configurations. The adapter provides a transition between two thread types — female (LH) to male (RH) — facilitating use in refrigeration, HVAC, or gas-handling systems where A2L (lower flammability) gases are employed.

In practice, it enables compatibility between gas cylinders and regulators or manifolds with differing thread standards, while maintaining leak integrity, durable materials, and safe operation in gas service. The adapter is offered by Uniweld as an accessory or spare component, and is also included as a bonus with certain A2L manifold assemblies.