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Outside tap drain

Discussion in 'Plumbing and Central Heating' started by Fredstudio, 16 Apr 2021.

  1. Fredstudio

    Fredstudio

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    If installing an outside tap with a hose union backplate so no exposed pipework would you still fit a drain off inside? Do many fit drain offs inside as most customers wouldn't be able to open them to drain it down. Thanks.
     
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  3. Bosswhite

    Bosswhite

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    Interior drain off is to stop water freezing in outside tap , plus stopping water in outside tap being contaminated . outside tap should also have a double check valve .
     
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  4. Fredstudio

    Fredstudio

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    Thanks. Just the fact would most customers be OK opening a drain of to stop the tap freezing?
     
  5. CBW

    CBW

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    and an isolation valve ;)
     
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  6. Fredstudio

    Fredstudio

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    Thanks I know. But do most install an internal drain off too? Just can't see many people being comfortable opening and closing one.
     
  7. CBW

    CBW

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    I’ve been fitted quite a few, whether or not people are comfortable doing it, regs require it.
     
  8. Madrab

    Madrab

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    Depends on where the pipework is coming from.

    If the supply rises up inside before heading out the wall then ideally you would have a drain at the lowest point. If it doesn't then opening the tap would drain the pipework.

    There is a requirement to drain the pipework to stop any water becoming stagnant/bacteria ridden over the winter when isolated.
     
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