Soldering Water Valves

Hi Tim,

Do I leave the valves open or closed when you solder them in the line?

David Griebel

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Hi Dave,

It depends upon the type of valve! If you are soldering a traditional valve that has a rubber or plastic washer, then you open it. It you are soldering a ball valve, you keep it closed.

Once the solder is set, you should try to slowly cool the valve body to stop the heat transfer towards the actual washer and ball.

Column QA