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  1. M

    TRV valve top section thread size

    Poo! I don't suppose you know which valve will be a direct replacement do you?
  2. M

    TRV valve top section thread size

    The existing one has acl Lifestyle on the top. The ones that are too big are a Honeywell and a Screwfix one (SKU 60368-001) Do you know what may replace the ACL valve?
  3. M

    TRV valve top section thread size

    I have bought a TRV valve to use the top section to replace a broken one on an existing valve. The new one has a larger thread size so won't screw on. Does anyone know if both thread sizes are available? Many thanks if you can help. M
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