Uniweld Products, Inc. F4131 Cylinder Tank Adapter

Uniweld F4131 Cylinder Adapter Set is a two-adapter kit that bridges CGA connections between B-tank regulators and MC-tank regulators. It includes F31, which converts a B-tank CGA520 outlet to an MC-tank CGA200 regulator inlet, and F41, which converts an MC-tank CGA200 outlet to a B CGA520 regulator inlet, enabling cross-compatibility in regulator setups. Listed under Uniweld’s F4131, the kit is stocked by major distributors (for example Grainger, model 5KH11) and is widely used in industrial gas and welding environments where both B and MC cylinder standards are encountered. By allowing a single regulator to service both cylinder types, this set reduces the need for multiple adapters and simplifies inventory for shops that routinely handle CGA520 and CGA200 interfaces. The adapters are designed for standard CGA connections, supporting common gas-regulator configurations without requiring separate, model-specific components.