Thread size TRV top

Discussion in 'Plumbers' Talk' started by Meek, Dec 8, 2018.

  1. Meek

    Meek New Member

    I bought a new TRV valve so I could replace the top section on an existing valve. The new top section has a bigger thread size than the existing. Is it possible to buy a valve set or just the replacement top with the smaller thread size?

    Thanks for any help you can give.


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