Concealed / pre-wall basin waste conections

[Neil Davenport]

Hi,

I am renovating a bathroom and seeking advice regarding basin waste pipe connections in concealed walls, pre-walls. Can anyone advise me what waste connection / socket is actually left in the wall in a scenario similar to this image assuming that the basin wall is internal and the waste runs vertically down inside the wall. I was hoping to have all the concealed pipes solvent weld but obviously the chrome trap pipe has to go into something?

Any advice welcome !

Cheers

Neil

 

[rpm]

That all depends on whether it was done correctly in the first place.

 

[Neil Davenport]

Sorry for not being clear, the picture is just an example. My scenario is similar but I will be ripping out and starting again, I know will be using a chrome bottle trap and want to conceal waste pipes in the wall. I would prefer to have the concealed wastes solvent weld but it isn't clear what the the first "In wall" connection should be.

 

[ShaunCorbs]

90° Bend CP Brass x ABS Connector

Converts from solvent waste to chrome metal

 

[rpm]

Everything behind the wall should be solvent weld, the last connection (outside of the wall) will be a compression joint.

 

[SimonG]

Either

Some chrome pipes come sized to fit pushfit waste.

But I don't use pushfit.

Or an elbow or straight compression connector.

 

[S.P.S.]

90° Bend CP Brass x ABS Connector

Converts from solvent waste to chrome metal

That fitting is a new one on me, looks great! Will definitely be using these in the future 🙂