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Flow Improvement with full Bore Isolator Valves ?

Discussion in 'Plumbing and Central Heating' started by topgazza, 16 Feb 2017.

  1. topgazza

    topgazza

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    Would there be a noticeable difference in the performance of a shower if I replaced the standard isolating valves on the feeds with full bore valves ?
     
  2. omega015

    omega015

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    What shower do you have? power, electric, mixer etc.. Is it being fed from a combi, kw of the electric shower, what kw is the boiler? Flow rate from hot water storage tank? A few variables to decipher before it can be answered. It probably will be unlikely to alter the performance to any noticeable degree. Also 15mm or 22mm? And are you sure you don't have full bore ones already (some can look very similar to each other). Also what's the pressure/flow rate like for your cold feed?
     
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  4. topgazza

    topgazza

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    Thanks Omega.

    I didn't think it would make a lot of difference either given its a thermostatic mixer fed by 15mm from a system boiler via an unvented cylinder. Current shower performs fine as its under decent pressure already given the setup. The pipes are inside a wardrobe next to the shower room and I'm changing a few things in there and was considering changing the valves, which are standard, whilst I'm there but its not critical.
     
  5. Madrab

    Madrab

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    If it's a mains pressure system then increase wouldn't be significant I wouldn't think but if it's easy to swap then it wouldn't hurt to move to full bore lever valves, less likely to leak.
     
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  7. topgazza

    topgazza

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    They're both in the open in the built in wardrobe so very easy to get at and I have a couple of unused ones.... so......... :)
     
  8. DIYnot Local

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