What size should the pipes be that feed a bath?

Discussion in 'Plumbing and Central Heating' started by julioarca, 23 Mar 2008.

  1. julioarca

    julioarca

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    Can someone let me know what size the copper pipes need to be to feed a bath, hot and cold.

    cheers
     
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  3. stardanny

    stardanny

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    22mm is the common size for a bath. ;)
     
  4. julioarca

    julioarca

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    this will be both hot and cold.

    are 22mm isolation valves available?
     
  5. seco services

    seco services

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    you let us know if its gravity or mains pressure hot/cold
     
  6. stardanny

    stardanny

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  7. julioarca

    julioarca

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    oops sorry, it fed via a combi boiler
     
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  9. stardanny

    stardanny

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    Does it really matter? 22mm is better, more flow than 15mm. 15mm for combi, 22mm for unvented storage. :D
     
  10. julioarca

    julioarca

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    so is it 15mm or 22 mm for combi?
     
  11. stardanny

    stardanny

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    15mm for combi as hot outlet is 15mm. If you renew bath you can reuse 22mm. 15mm or 22mm, no problem.

    22mm for tank fed water.
    15mm for combi.
    22mm for unvented storage.

    Dan :D
     
  12. julioarca

    julioarca

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    cheers guys, its a bath renewal, currently on 22mm.
     
  13. seco services

    seco services

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    you've just answered your own question

    22 gravity
    15 combi etc

    if it's 22mm leave it.
    i asked as it could of been a total new install and alot of mains pressure bath taps are 1/2" now not 3/4" so no need for 22mm pipe.
     
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