Noisy Taps since insides replaced

[The Bulwell Brick]

I have quarter turn taps in my downstairs bathroom, the sink taps were getting a bit stiff so I replaced the insides with Flomasta 1/2" BSP quarter turn ceramic tap glands from Screwfix.

They work fine but are really noisy unless on full flow or trickle, anything in between sounds like Niagara Falls. The noise is coming from the tap not the pipework.

Have I bought crap replacements, or been unlucky and got a dodgy pair? Is there anything I can do to silence them?

 

[Ben-gee]

Cheap rubbish. Best thing is to fit a flow restrictor valve in the pipe work- then you can just operate the taps in the fully open position and it won’t splash all over the place .