Best fast flow shower waste

waynehayes

I recently installed a mixer shower and now the shower waste can't cope with the volume of water. If I take out the trap cups then the flow is fine, so I'd like to change the waste for a faster flowing one as I'm getting gurgling noises without the trap in place.
I've found one which claims to be 54 litres per minute. Is that about the highest flow I'm going to get?

southcoastrgi

You won't have anything like 54 l/min coming out of your shower

Luke1066

We used this for our power shower and copes really well with the flow rate.

https://www.screwfix.com/p/mcalpine-shower-trap-chrome-effect-90mm/45503?tc=UA1&ds_kid=92700020953274390&ds_rl=1241687&ds_rl=1245250&ds_rl=1249404&ds_rl=1249799&ds_rl=1245250&ds_rl=1249481&gclid=EAIaIQobChMIuLiGk7qL4QIVS_lRCh3ChgDAEAQYAiABEgKI3vD_BwE&gclsrc=aw.ds

phill99

You need to check that there aren't blockages further along the pipework and that there is a sufficient fall in the pipework itself. If you have problems with these two, then changing your waste will be ineffective.


What diameter is your waste? If you have an old style one, it is a smaller diameter than the modern 90mm ones.

Luke1066

phill99 wrote: »

You need to check that there aren't blockages further along the pipework and that there is a sufficient fall in the pipework itself. If you have problems with these two, then changing your waste will be ineffective.


What diameter is your waste? If you have an old style one, it is a smaller diameter than the modern 90mm ones.

90mm shower waste :eek: most are 40mm or 50mm

vw100

90mm is standard waste size for showers now.

phill99

Luke1066 wrote: »

90mm shower waste :eek: most are 40mm or 50mm

Not the modern ones.

waynehayes

Thanks for the advice all. I managed to alter the existing cup to help with the flow. There’s not much of a water seal but it seems to have stopped the gurgling.

southcoastrgi

vw100 wrote: »

90mm is standard waste size for showers now.

You maybe getting confused with the trap depth, the waste pipe will be 40mm or 1 1/2"

waynehayes

It’s the cutout in the shower tray that is 90mm.

southcoastrgi

waynehayes wrote: »

It’s the cutout in the shower tray that is 90mm.

I doubt that very much