two things you have to worry about 1) the type of connectors between the supply line and the machines. 2) that the supply line can handle an increase in volume.
The water quality, pressure and quantity from from DWA, Gambro, Fresenius and any other company should be acceptable for any Dialysis machine.
If you have a small loop ensure that it can handle the inreased volume, the pressure will remain the same, I had to split a single loop into 2 parallel loops in order to cope with upgrading the unit from 15 machined to 35
