Cutting in a stopcock live

[Best]

Stating the obvious but, if you are shoving a new stopcock on live pipe, do make sure the new valve is full on & consider having a temporary pipe on its other end which is joined to a hose.
Keeps the pressure from the mains from pushing against you

 

[jonny5isalive]

Have you got enough room to get a clamp on the black pipe? I'm assuming it's alkathene or what ever it is.

I did some work with a kitchen fitter and he loved his clamp.

Loads of room. Just never fancied them. Always assumed if it was a bit brittle or old it would split. He used his on any Plastic pipe?

 

[jonny5isalive]

pipe squeezer is grand on mdpe, on old alkathene I am not so sure. Personally I would freeze it, it wont have any moving water if you dont flush the loo etc!, or try a co2 kit more exciting as you dont know when the plug will pop 🙂 re idoing it live, its no fun trying to fit the right insert with waterv going all over. Isnt there a valve in the street to turn off?

Valve on neighbours either side. The clean movable one doesn't isolate and the dirty rusty one is so rusty the chain holding the lid on feel apart in my hand so I left it alone.

 

[jonny5isalive]

Thanks for all the advice.

Bought a good variety of fittings to give me some redundancy if it went **** up. Then bottled it.

Managed to get the stopcock half turned off with concerted messing and cut a compression iso into the copper in the kitchen. Used the wet vac to sort the water. A bit seat of the pants as the bloody copper wouldn't take the nut or olive.

Not as seat of the pants as I felt all morning with the idea of cutting the alkethene live and not being able to sort it.

 

[jonny5isalive]

Stating the obvious but, if you are shoving a new stopcock on live pipe, do make sure the new valve is full on & consider having a temporary pipe on its other end which is joined to a hose.
Keeps the pressure from the mains from pushing against you

Plan was to use the stopcock open but the plastic ones I had weren't full bore so wasn't sure how that would work. Does the pipe and hose just get the water away from you or does it make the process easier as well?

 

[Best]

Plan was to use the stopcock open but the plastic ones I had weren't full bite so want sure how that would work. Does the Pipe and hose just get the water away from you or does it make the process easier as well?

Both. It would prevent the high pressure forcing against the new stopcock and water spraying everywhere. So less water problems & easier as no pressure

 

[jonny5isalive]

Buy the adaptors, take the old one off, if they don't fit stick the old one back on and go to plan b....
Can you not get one onto the copper?
I bought a pipe freezer, had it for a year and never used it once.

Copper was in the kitchen so more of a problem if it went **** up. Stopcock in a ****ty little corner Just above the floor with no clearance. With the live cutting I'd rather have done it under the floor.

 

[SJB]

I've fitted a few aladdins, not had a problem with one yet. Fantastic bits of kit if the conditions are right. Wouldn't go putting my clamp on black alkathene mind it can be far too brittle. Mdpe or flexi hoses when I can't be arsed to go downstairs to the stopcock are the only things I ever clamp