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Shower tray waste 50mm v 90mm

Discussion in 'Plumbing and Central Heating' started by hunggaur, 21 Jun 2015.

  1. hunggaur


    19 Jul 2011
    Thanks Received:
    United Kingdom
    hi folks bit of a strange question for you . I have a shower tray which I am going to fit it only has a 50mm waste v 90mm I have on other shower trays I have fitted.

    I know that the flow rate will be limited by the pipe work which I this case drops down to 40m. Then a 32 mm boss.

    My question is as this shower will be run off a pump will the standard 50mm waste cope with clearing the water from the shower tray or will it struggle And should I chanfpge the tray for one with a 90mm outlet.


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  3. Fit a high flow waste, the vast majority of showers are run in 40mm waste pipe. Replace the 32mm boss with a 40mm
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