problem with water flow in a new mixer tap

[Ashlea]

Had a new bathroom fitter, and the sink has these taps on Ideal Standard Tesi 1 lever Chrome effect Deck Mono Mixer Tap. The hot and cold water flow is reduced. But when the fitter took the taps off the water flow was increased, Could there be a problem with the new taps or is this because they have a ceramic valve in?

 

[ShaunCorbs]

I’m guessing you have a cylinder with tanks eg gravity hot / gravity cold water ?

 

[Deleted member 120897]

If it’s this one, it’s operating pressure is 0.3 bar, which if you don’t have, then could be your issue. More information on your setup as per @ShaunCorbs please, can you also confirm if the tap is correct, have a look on the box/instructions and see if it states a minimum pressure. Ceramic taps do have a tendency to reduce flow rates.