Shower waste alteration

[Andy.Lav]

Hi Guys

I have a shower waste that isnt leaking which is the main thing but its taking a fair while to drain away.

The central funnel thing goes into a cup, which then spills over into the main waste and away. I think if I cut a section off the bottom of the funnel and increase the gap the waste might have more capacity.

The risks- cut too much and there is no smell barrier? Anything else?

Thoughts or suggestions? Can add photos if needed

 

[terryplumb]

Show us pics please.

 

[Hugh Jaleak]

Trap will probably habe been designed with a 76mm water seal which is the requirement under Building Regs for connecting the waste directly to a soil stack. Removing anything off the bottom will obviously reduce the seal depth, and may lead to other issues with odour. Trap will also have been designed to allow the required flow of water.

I'd be looking at the waste pipe from the shower first, what sort of length is it, and what fall is on it. Also, how long as it been installed, a build up of crud in the pipe may also be restricting the flow.

 

[Madrab]

How high is the tray trap above the main run of the waste pipe and what's the fall on the waste run to the outflow?