Unused hot water outlet for washing machine

dggar

esuhl wrote: »

Oh -- I hadn't thought about that. :eek:

There will be a ~160mm dead leg. The pipe is 15mm diameter. And apparently the guidelines say the maximum dead leg length should be six times the diameter (i.e. 90mm).

It looks like I should be able to replace the T-junction with an elbow. I think this is what I'll need, right?

http://www.screwfix.com/p/p801-05-elbow-15-x-15mm-2-pack/91568

Probably a daft question, but how tightly do you need to tighten the nuts? With-all-your-might, or just-about-snug...?

To start I would do hand tight and then a further 1/2 turn with a spanner or grips. I put PTFE tape on the threads as well. There are other schools of thought out there.


Nice Vid here, https://www.youtube.com/watch?v=6YqgAAMy5fk

missprice

Alex1983 wrote: »

Google hot water dead leg, it could breed bacteria, worse case legionnaires.

Oh dear. I still have not had a case of legionnaires in the 20 years my dead leg, in the same place, from the same cause, washing machines only have cold fill. Am I missing something

ETA it's turned off by the valve, so far no leaks.

molerat

The only reason you really need a blanking cap is so that when rummaging under the sink and you knock the tap ............. I left mine un blanked for a few years but one day when I had the water turned off for something else I took the tap off and put a 15mm blanking plug on.

esuhl

dggar wrote: »

To start I would do hand tight and then a further 1/2 turn with a spanner or grips. I put PTFE tape on the threads as well. There are other schools of thought out there.


Nice Vid here, https://www.youtube.com/watch?v=6YqgAAMy5fk

Thanks, that's really helpful. I hadn't heard of "jointing compound" before.

I vaguely remember fixing a leak by replacing the PTFE tape, but I didn't use jointing compound and it took a few attempts to stop the leak (compounded by the fact that I think I overtightened the nut and twisted the piping).