Using combi fed and gravity fed showers simultaneously

[cqcombat]

Hi all, I have a combi boiler for hot water and heating but have 2 showers in the house. Obviously low water pressure if both showers are used at same time. I'm wondering if I could install a water tank to gravity feed one of the showers, with new electrric shower and if so how to stop the water tank being filled if the 2nd combi fed shower is also used. Any ideas? Thanks

 

[SimonG]

You could look at an accumulator.
Mira do a tank fed electric shower.

 

[Ben-gee]

Or if mains is very poor; but in a 75 gallon storage tank and gravity cylinder - you can then put a 3 bar Stuart Turner Monsoon pump and that’ll run two good showers together.
The combi can be used to heat the cylinder so there’s no need for a new boiler.
Although you would now not use the combi for any on demand hot water.