M
macackau
50 l/m and you are having issues with the flow rate with multiple outlets open? Something isn't right here. I don't think it's a pipe upgrade needed. I have several customers with 25 or 32mm MDPE and the rest of the house is all piped in 22mm copper and they have no drop in flow with multiple outlets open. Are the garden taps fed off the balanced supply or before it? Be good to know the flow rate after the combination valve.