Shower tray waste 50mm v 90mm

19 Jul 2011
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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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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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