Replaced ball cock valve now pipes are noisy

Discussion in 'Plumbing and Central Heating' started by ss90, 3 Sep 2021.

  1. ss90

    ss90

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    My loft tank ball valve started leaking, so I replaced it with a like for like part from screwfix but it was whistling like crazy. I assumed it may have been faulty or just substandard so brought a more expensive part. The whilstling from the valve has gone, but now the pipes from the main stop cock make a horrendous racket!
    It’s definitely the same gauge and a high pressure part. The isolator valve and all other isolators are turned back on fully. As the tank nears full it quietens off, I’m presuming as the valve starts restricting the flow. Any ideas, I’ve changed nothing else.
     
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  3. CBW

    CBW

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    Is it a continuous noise, or like tapping?
     
  4. ss90

    ss90

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    Continuous and it’s through the pipes particularly downstairs. Put the old valve back on and no problem noise goes
     
  5. flameport

    flameport

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    Which exact part from screwfix?
     
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  7. CBW

    CBW

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    Could be a faulty valve. As per flameport, what part? Was it like for like?
     
  8. ss90

    ss90

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    I think the screwfix one was definitely faulty, but I replace with a slightly more expensive one and although the whistling at the valve has gone, the noise through the cold water pipes remains as if it’s being restricted.
    The screwfix part was a high pressure 2 part flomasta ball valve.
     
  9. CBW

    CBW

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    Does the old one come out the same flow rate/force as the new one?
     
  10. polesapart

    polesapart

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    Try a Fluidmaster (side entry) ballvalve. If it comes with a flow restrictor, fit it.
     
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