Restricting flow at tap

[mitchino]

I'm fitting a bathroom basin and the water pressure is a bit fierce, I'd like to reduce the flow at the mixer tap. It's plumbed using JG Speedfit. Can I just use a stopcock or stop valve or service valve to do this job?

 

[ShaunCorbs]

No as this will increase the pressure you can get online valves with flow restrictors cp961 and then choose your insert normally 6lpm for a basin is fine