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Hello all. I’ve had a productive afternoon. Replaced the 15mm vertical copper pipe with PEX. Into the 22 x 15 tee from the main hot feed. No leaks (so far) and we have hot water in the kitchen. In the boxed in section the pipe had a straight coupler followed by an isolation valve. Having...

Excellent thank you. I shall let you know the outcome.

I assume it’s always better to go for a full bore valve

Perfect. That is my job for tomorrow. The existing compression tee will be okay to use with the PAX pipe won’t it? Obviously with inserts.

How far apart can the clips be? There is only about a meter of boxing in until the the pipes enter the corner cupboard. So could add clips above and below the box section.

as a permanent solution or temporary fix? Plastic would be easier to fit

I shall get some photos tomorrow

Is there anyway of checking if the pipe is blocked? I’m fully prepared to replace the vertical section if required but it won’t be easy haha.

that is correct. A tee from the 22mm pipe to the existing 15mm vertical pipe to the kitchen.

2ltrs a minute when it trickles. 6ish ltrs a min in the bathroom.

Ah right. We can rule that out. It’s not a tee to the kitchen it’s a 22-15 soldered reducer then 3 elbows tho get it to the vertical 15mm into the kitchen below. I’ve took this out and put a stop end on and put a compression tee (22-15) in the line closer to the boiler, made no difference.

I’ll have to do this tomorrow. I’ll have to pull out the cabinet under the basin again.

About a meter visible but it goes into a boxed in section that I can just about see through the cobwebs. I’ll vacuum the boxes in section tomorrow and try to find a valve

As far as I can tell the only isolation valve is the one I fitted to connect copper to flexi at the tap. However, this problem was present before the new taps I put in last week. I thought the problem may have been the taps, alas it was not.

Replace the existing 15mm pipe with new 15mm pipe and that should fix it?

9ltrs per minute cold water. About 2ltrs a minute hot. But it comes out cold until the tap upstairs is opened. short flexi from copper to tap but I’ve taken that off and get the same 2ltrs a min coming out of the end of the copper pipe

ah right. I don’t think the pipes are crossed as we do get hot water as long as the hot tap in the bathroom is open. the hot water pressure is brilliant in the bathroom just not in the kitchen. Would extending the 22mm pipe from the bathroom to the kitchen make any difference?

thanks Chris. How would I increase pressure? Continue the 22mm to the kitchen? what do you mean by crossed pipes?

Hello all, I’ve had this problem for a long time and I’ve had enough so trying to fix it. hot water in the kitchen will only work if I turn on a hot tap in the bathroom above. I’ve checked the pipes. And when my parents had the bathroom and kitchen fitted years ago (cowboys would be a...