Poor HW pressure

[Bogart]

Another bit on the saga of the new kitchen sink/tap /waste arrangement. Waste now sorted only problem now is the proverbial poor pressure using a monobloc mixer tap. The cold provides 9L/min whilst the hot is 2.75L/min yes 2.75. In the attached piccy you can see the setup. The tap came with both the solid and flexible 10mm
pipe/hose. There is not room to get just the flexible straight into the base of the tap hence the metal portion. The hot is supplied via a F/E tank which with 'normal' taps
gives a decent flow as is 15mm all the way to the tap. You can see that this tap has JG emergency shut off valves on hot and cold which are themselves restrictive. Further back along the line are another pair of the same valve. Now to my mind all these restrictions are the cause of the poor hot flow. Up near the hot water cylinder
is Stuart Turner monsoon twin shower pump. Could this be incorporated into the system to overcome the poor pressure. Or should I really be concentrating on getting these poor restrictions out of the way ie full bore valves, there is not anything I can do, as far as I see, with the actual tap connections themselves.

 

[Bogart]

My thoughts exactly Bogart. The service valves ARE throttled down to 10mm ball/bore but they connect to 10mm copper then tails - yes - full-bore eliminates only about 2 inches of 10mm pipe. Still, as you say, every bit helps and you never know. I may have a go at removing the aerator. I've heard they can harbour factory debris.

Cheers

Go for it nothing to lose. Fitting a HW pump is near the top of my list for post Easter jobs.