Shower head query

[BobbyJoe]

Hi everyone,

I have a thermostatic pressure shower in my bathroom and a found flow reducing valves similar to the link provided.

Amazon product
I would like to know what is the purpose of these and if I should pop one in the shower head as I opened the shower head and nothing was in it, the flow restrictors are 4, 6 and 9 L/min flow as far is the instructions state.

Any advice would be great thanks and my water is mains fed.

Combi boiler 25 KW Vokera Easi Heat Plus 25C, 10.2L @ 35C Rise.

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[Ben-gee]

I believe that is a combi boiler? If so don’t fit the flow restrictor in your shower head as it will probably not allow enough flow through the boiler to activate the heating of it.