Bath flow rate and temp problem.

[cbr]

Hi All.

I am installing a new bathroom at the weekend but have a problem that I was hoping to solve while doing so.

I have a 15mm hot water pipe coming out of the boiler into the bathroom. Firstly, there is a 15mm branch off to the bathroom sink. Secondly, there is a 22mm branch off to the bath. Lastly, it heads off down the stair to the kitchen sink.

When I turn on the hot water bath sink tap, the water is roasting and flowing at a good rate. When I turn on the kitchen sink hot water tap down the stairs the water is roasting and flowing at a good rate. However, the problem I have is that when I turn on the bath hot water tap, the water is lukewarm and not flowing at the rate the other two are!!!

Any ideas??

 

[ChrisR]

You probably have gravity fed hot water (perhaps 3 metres head) and the tap is designed for higher pressure (say 1bar, = 10 metres).

Or the tap or pipe is full of scale/rust.

 

[cbr]

You probably have gravity fed hot water (perhaps 3 metres head) and the tap is designed for higher pressure (say 1bar, = 10 metres).

Or the tap or pipe is full of scale/rust.

Thanks mate, it is gravity fed. There probably is a chance that the tap has some rust as it is old but my gut feeling now is your initial suggestion. Cheers.