Loft tank: Replace side-entry float valve.

Discussion in 'Plumbing and Central Heating' started by Laurence Harvey, 14 Jun 2021.

  1. Laurence Harvey

    Laurence Harvey

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    I need to replace the float valve in my daughters loft tank. The old one is noisy and leaky. I intend to replace it with a quieter side entry fill valve. i.e. this one.

    I’ve replaced the fill valve in my own house a number of years ago but I can’t remember what type of fitting is needed to connect the brass shank of the fill-valve to the 15mm pipework.

    The old fitting/connection looks a bit skanky,...see picture.

    Can I re-use the existing fitting (as skanky as it looks) or is it best to replace it?

    If I can re-use the existing fitting all well and good,...but I’d like to have new fitting/s to hand just in case the old one can’t be re-utilized.

    In essence, what do I need to buy to make the connection?

    As ever, all replies gratefully received.

    upload_2021-6-14_11-8-40.jpeg
     
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  3. Mottie

    Mottie

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    I think you can reuse the existing fitting but you may need a new fibre washer.
     
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  4. denso13

    denso13

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    As above, a clean up then fit a new fibre washer and it should be fine.
     
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  5. Laurence Harvey

    Laurence Harvey

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    Thanks for that @Mottie ;...any idea which washer size/type I might need?

    ...Also...

    Would either of these ½”-15mm elbowed connectors be suitable to replace the existing skanky old connector if the need arises?


    upload_2021-6-14_12-47-48.jpeg
    upload_2021-6-14_12-48-22.jpeg
     
  6. Mottie

    Mottie

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    You could replace it with the same if you were ok with soldering but to be honest, there’s nothing wrong with what you have - just a bit of limescale where it’s had a weep in the past. Go to any plumbers merchants and just ask for a 15mm tap connector washer.
     
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  8. CBW

    CBW

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  9. Laurence Harvey

    Laurence Harvey

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    Thanks for that @Mottie ;...are these the washers you mean?...£1.35 from s/fix...they say ½” not 15mm though.

    Washer sizes have always confused the hell out of me. :(

    upload_2021-6-14_13-14-10.jpeg
     
  10. CBW

    CBW

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    Yes 1/2” is what you need, not 15mm.
     
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  11. Laurence Harvey

    Laurence Harvey

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    Thanks for that @CBW;...there isn’t an isolating valve fitted at the moment and I did intend to fit one. I've already bought one of these,...good quality (presumably) with an easy/reliable shut off in an emergency, or whenever.

    I usually like to ‘over buy’ all/any items I think I might need if I’m doing any jobs like this,...especially when it’s not in my own house. I like to be armed to the teeth with any conceivable item that I might need. Thank god for S/Fix and Toolstation’s returns policy!

    If I can get away with using the existing connector I will,...or even just replace the washer is easier than changing the whole thing.

    However, I’m a passable solderer if need be;...end-feed is not a problem,...I’ve done lots of it over the years,...it’s just that I don’t do plumbing/soldering on a regular basis and I do get a bit rusty! :unsure:
     
    Last edited: 14 Jun 2021
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  12. Nige F

    Nige F

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    That overflow pipe looks like it's distorting the cistern wall
     
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