induction brazing of brass valve assembly

A major appliance manufacturer is looking to replace torch brazing with induction brazing for a cleaner, environmentally friendly, and more consistent performance. Our team was provided with a copper tube and brass diverter used in the manufacturing of diverter valves.


This induction heating application requires mobile brazing equipment like the UBraze system which comes with a hand-held brazing gun for easy access to hard-to-reach areas. A custom C-shaped induction heating coil allows the operator to move freely around the joints.

Industry: Appliances & HVAC


Brazing flux (Stay-silv) is applied to the brass to the copper joint. Induction heating is started closer to the copper pipe in order to avoid damaging the threads of the brass assembly. The brazing gun needs to be frequently rotated in order to achieve even heat distribution and alloy flow. Argon is blown over the joint to clean any residual flux. The induction brazing process is completed within 30 seconds at the power of 10.75 kW and the temperature of ~1500 °F (815 °C). Induction heating is a clean, fast, and contactless method. UltraFlex induction heating equipment can be pre-programmed for specific applications to produce precise and repeatable results.

Read more about other induction brazing applications here. 

To request more information about this particular Application test, please contact us. 

Reference Info: Application Note 3463-6784

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