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Blanking nut for stopcock

Discussion in 'Plumbing and Central Heating' started by Richieduliban87, 4 May 2020.

  1. Richieduliban87

    Richieduliban87

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    F56ADCD1-BF03-491C-9701-4A8BFEB0B916.jpeg A 3/4 inch blanking nut doesn’t fit this ancient stop cock. Would a 22mm one most likely work?
     
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  3. denso13

    denso13

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    Not necessarily. Do you still have the pipe and nut that used to be fitted to it?
     
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  4. Madrab

    Madrab

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    Yup, the old imperials are usually a 1" blank if I remember but with old fittings you can never be sure.
     
  5. JohnD

    JohnD

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    Measure it.

    BSP size names are surprisingly different to their measured dimensions, but you can look them up when you know the actual diameter.
     
  6. CBW

    CBW

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    Any reason for just blanking off? If you intend to leave it, then it would be classed as a dead leg in the system and stagnant water could develop. The fitting could even be the manipulative compression type.
     
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  7. Richieduliban87

    Richieduliban87

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    The 22mm worked in the end.

    I am blanking it off because this pipe is connected to the two flats below and want my own feed from the loft separate to theirs.

    I will remove the entire pipe section once i get the bath off, and the main pipe has a convenient tee to which I can just put a cap on. Does that sound okay @Chris_W?
     
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