Mixer taps problem/flow rate

[almathol]

Hi; I recently replaced bathroom and ensuite basin taps from single to monobloc mixers. Isolation valves were fitted as well with flexi connectors.
Hot water from cylinder and cold from tank.
Both basins now seem to have really poor flow rate??
Any ideas as to the cause??
THANKS

 

[clf-gas]

Restriction of flow with using issolation valves and flexi tap conectors.
They are better used in high pressure systems, ie, combi or pumped.

 

[bengasman]

Chances are you used the cheap ones that have quite a small bore, full bore ones flexis are about a tenner a pop, and full bore iso or check valves around a fiver; if you paid significantly less than 50 quid for the 2 sets, this is likely to be the problem.