Hot water flow/pressure

[thewickedpickett]

I recently had an eco tec plus 836 combi installed as part of an oil to gas conversion.

One thing I can’t work out is why the bathroom sink hot water flow is 12-13L per minute with at 44c and even hotter. However the nearby bath freestanding tap is 8-9L per minute at this temp.

Both taps appear to be 15mm pipes. With flexi connections. Is it just the freestanding taps at the bath restricting flow?

 

[John.g]

Assuming both are single mixer taps and both taps have that same characteristics then it might be the flexi pipes internal diameter. If the bath tap has only 6mm ID (X 1M) flexis then the pressure would have to be increased by almost 1.0bar to give 12LPM but if it has 8mm ID flexis then the pressure drop is only ~ 0.23bar, so maybe have a look at them.