Bodging a short insert (~2cm) into 28mm pipe

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The outlet from my cold water tank is a 28mm pipe, the valve (which hasn't been used for ~ 30 years) is jammed. I'd like to replace it with a ball valve (aka lever valve ?) but Peglers website says their valve is 96mm long and the current one is 113mm. I reckon my chances of, ahem, finding (in a skip ?) a short length of 28mm is zero and I don't want to buy 2 metres. In practice I'm going to have to cut a bit out of the pipe and insert something a few centimetres long (the pipe run is over a metre so that's no problem).

Various ideas:
a) Use a screwdriver slot isolating valve which I'd hide with insulation, but I can't find a 28mm one.

b) Use a repair coupling, but again I can't find a 28mm one.

c) Use a pair of 28mm to 22mm connectors and a short length of 22mm pipe (which I've got).

d) Use a T connector which has a 15mm branch and use a blanking disc to block the branch; link to a suitable connector:
https://www.tradingdepot.co.uk/compression-fitting-tee-reduced-branch-28mm-x-28mm-x-15mm

Currently this is my favourite, if I did this should I point the branch downwards so as to avoid an air pocket ?

e) Use a suitable Non-return valve; such as (link):
https://www.tradingdepot.co.uk/brass-spring-loaded-check-valve-c-x-c-28mm


Any advice or comments gratefully received.
 
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Originally I thought of just adding the new valve but, probably for spurious reasons, decided against it. I'll get a photo tomorrow as long as I can get sufficient light in a dark loft.
 
As feared the light was a problem, I don't know whether this photo is good enough. The tank is really 2 tanks connected together, the right hand one is the inlet and the left hand the outlet.


cold_water_tank.jpg


The jammed valve is on the right, as you can see there's plenty of room to add a valve, there's also plenty of pipe to the right of the valve (out of shot). Originally I was going put a ball valve where the outlet pipe passes in front of the gap between the tanks, so that when the valve was off the lever would be between them so it'd be difficult to accidentally knock it on. I then felt that removing the jammed valve would be a neater job and started to tie myself in knots.
 
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That's a stopcock there, most likely compression ends - so you could remove it and service "it on the bench" Technically not correct, but a gate valve siezed would not be repairable.
 
Take out the old valve, take out the disc/seat, drill out the inners if you have to. You could even back out the gland and just fit a blank instead of the valve spindle/handle. Refit in the pipe. Then, fit the valve you want in series somewhere close by on the same line. There you have it, using the valve body instead of buying a length of pipe.

Nozzle
 
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That's a stopcock there, most likely compression ends - so you could remove it and service "it on the bench" Technically not correct, but a gate valve siezed would not be repairable.

Take out the old valve, take out the disc/seat, drill out the inners if you have to. You could even back out the gland and just fit a blank instead of the valve spindle/handle. Refit in the pipe. Then, fit the valve you want in series somewhere close by on the same line. There you have it, using the valve body instead of buying a length of pipe.

Nozzle

Thanks for both of these I'll try to switch brain on (not always easy). Thanks again.
 
Ask on your local Social Media page, someone might have a spare piece of 28mm kicking about. I have some here, but I'm a bit far!
 
Or hang around outside your local plumbers merchants and scrounge an offcut from a passing plumber.
 
Ask on your local Social Media page, someone might have a spare piece of 28mm kicking about. I have some here, but I'm a bit far!

I've got some relations who live in Potters Bar, I did wonder if they knew Dilalio and if he might have an offcut. However my current favourite idea is Nozzle's suggestion of removing the innards and putting in a blanking cap, that's as long as I don't have to remove the valve and put it in a vice (largely 'cos I ain't got one).
 
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