Adding a T fitting to a hot water pipe with no play in it

Is vaseline that expensive nowadays?

Several ways. Generally, the idea is to cut out enough pipe in order that the fittings (say a couple of straight couplings, two bits of pipe, a T) can be assembled onto the pipe. If the fittings normally have the pipes go in 20mm, for example, and make an adequate seal with 15mm of pipe in them, then that gives you 5mm of slack each fitting, meaning that you can get enough slack to put a fitting on with only 3 fittings - which straight couplings and a T can get you. I'd use end-feed for this, as it's more flexible, but solder ring would be fine as long as you pay attention. If you don't especially care about flowrate in the other pipe, you could use 4 bends, 4 bits of pipe, and a T, to make a "U" shaped loop of pipe to connect to.

Yes.

You need a normal tee and a slip coupler.

Cut the pipe and then a section out of it to accomodate the tee, by measuring the required gap on the tee itself.

Cut the pipe again some distance from the tee position and slide the slip coupler onto the pipe.

Assemble the length of pipe just removed into the tee and fit the tee onto the other end of the existing pipe. Slide the slip coupler over both pipes and make all the joints.

This technique assumes you have no longitudinal play (which you suggest) but you should have latitudinal play enough to fit it all together.

Parts are

There are probably equivalents in end feed if you prefer.

If the existing pipe isn't too short, you could add some bends and have your tee offset slightly:

---- ------ | | | | ---T--- |

Adds a bit of resistance to the flow in the existing pipe though.

The usual trick is to cut out more pipe than you would otherwise need to, and to use a repair coupling - such as

As it is for a sink and may not require much flow, consider a clamp on washing machine coupler.

Regards Capitol

Since he's tee'ing into the bath hot feed. it's probably a 22mm pipe. Can you get washing machine clamp-on jobbies for pipes larger than 15mm?

Flexible connector

Please explain how that helps to tee into a pipe with no end-float.

Dave

Ah, I see! The flexible bit is to replace part of the existing pipe.

Sorry, I thought it was to connect the new tap - which could only be done

The existing pipe is probably 22mm - so he'd need a flexible with 22mm compression or pushfit fittings on both ends. Very few flexibles are full bore though - so it may restrict the flow to the bath somewhat.

Thanks for all the suggestions. I've gone ahead and used a slip coupler (or a burst pipe repair as its called in Homebase) as this seemed to be the solution with the least chance of my getting it all wrong. End result looks fine, doesn't leak and as a bonus it works. Sink is now plumbed in and the holiday is booked.

Once again thanks for all the suggestions.