I have an existing pumped shower using a high output dual pump.Next door to the shower room is a bathroom which I wish to put a shower over the bath. Is it possible to T into the flow and return (after the flow switch) of the existing pump to supply this extra shower.The use of both showers at once will be etremely unlikely.
You can certainly run two showers off one pump, and also run your Basin and Bath taps as well. However if you run two units at the same time you will inevitably get reduced pressure.