Shower selection advice - does my set up meet minimum requirements

[IanGeoffrey]

We are wanting to install a Hansgrohe rainmaker select 580 3 jet overhead shower. The manufacturer spec is:

Operating pressure: min 1.5 bar - max 6 bar
Flow rate between 17 - 20l/min at 3 bar for the three spray patterns.

Our mains pressure is 4 bar and the flow rate is about 12.5l/min. We have a combi boiler. Based on this, can anyone advise whether this shower head is appropriate?

I should note that this shower head requires 2 valves as the spray face is so large.

Many thanks in advance of any help you can provide!

 

[gigz]

You've answered your own question, flow rate not enough. It might work but if it doesn't you'll have no comeback.

 

[gigz]

Plus if anyone opens a tap while the showers on it'll slow to a dribble. You can get some good showers with drenchers that'll work well with a combi.