Replacing piece of waste pipe in situ

[jamiegw]

I need to replace a section of damaged waste pipe


If I cut a new section to the correct length


And then use a sleeve on each end


My concern is when I pull the sleeves back over the new piece of pipe, there will be a small step where the new pipe meets the old pipe, and be a potential cause of waste build up in the future?

If I use one of these, I can cut the new piece of pipe so it fits perfectly between the old pieces resulting in no step.



What is the correct way to fix this?

 

[HERTS P&D]

Either way will work.

Andy

 

[jamiegw]

Either way will work.

Andy

Good to know. For some reason I thought you could only push the pipe half way in to one of these, meaning it would be impossible to use it to replace a section of pipe without having a gap between the old and new pipe.

 

[johnny2007]

Good to know. For some reason I thought you could only push the pipe half way in to one of these, meaning it would be impossible to use it to replace a section of pipe without having a gap between the old and new pipe.

That's correct.
You can either file the stop mark in the coupler, or find movement somewhere else, surely another joint or more than one.
Don't know if allowed with newest regs, but a solvent weld sleeve was used many times by plumbers I know.

 

[Hugh Jaleak]

Get a 'Slip Coupling, that will slide all the way onto on end of the pipe, measure width of coupling, divide by 2, mark this onto the other section of pipe then slide coupler back to make the joint. Provided all cut ends are chamfered are per requirements for jointing, it is very unlikely anything will snag on the ends.

 

[jamiegw]

Get a 'Slip Coupling, that will slide all the way onto on end of the pipe, measure width of coupling, divide by 2, mark this onto the other section of pipe then slide coupler back to make the joint. Provided all cut ends are chamfered are per requirements for jointing, it is very unlikely anything will snag on the ends.

Thanks for the instructions.

With regards to cutting and chamfering, I have a small device for holding pipes in place and stable for cutting. I plan to cut the pipe with either a hand saw or an oscillating multi-tool, and chamfer the ends with a hand file. How does this sound?

 

[Hugh Jaleak]

Cut by whichever method suits you best, but the chamfer is the important bit, I've always done it with a hand file.

 

[jamiegw]

Get a 'Slip Coupling, that will slide all the way onto on end of the pipe, measure width of coupling, divide by 2, mark this onto the other section of pipe then slide coupler back to make the joint. Provided all cut ends are chamfered are per requirements for jointing, it is very unlikely anything will snag on the ends.

Here is the result of my and my wife's morning. There is a 1cm in the sleeve highlighted in red. Hopefully that will not cause issues. All pipes were champfer with hand file and sanded with 120 grit. Lube is essential.

Now we will run the water and observe all joints to check no water is leaking, bed with sand, cover with sand and then earth.

 

[Hugh Jaleak]

As long as the coupling in centred over the joint, a bit of gap between the pipes wont hut. I would put some concrete under the chamber base to support it in position, peagravel under and around the pipes, then backfill, making sure there are no larges stones or lumps in the initial layer.

 

[johnny2007]

What do you mean 1cm in the sleeve?
Gap between the 2 pipes or one of the pipes is only in by 1cm?

 

[jamiegw]

What do you mean 1cm in the sleeve?
Gap between the 2 pipes or one of the pipes is only in by 1cm?

The pipes meet in the middle of the sleeve, but with a 1cm gap between them. They are both champferd.

 

[johnny2007]

The pipes meet in the middle of the sleeve, but with a 1cm gap between them. They are both champferd.

No problem then