The cold is fed directly off the mains water (well, via a water softener) but the hot is from a hot water tank in the loft (fed from a cold water tank, above it)
The tap I have got seem to restrict the flow quite a lot (but SWMBO wanted that tape of course!)
I purchased a Grundfoss home booster pump recently, and have just got round to connecting it.
The results are poor! Although the flow is better, it is still far far short of the mains pressure, thus resulting in backflow problems when the hot and cold are both on. If I fit a non-return valve, I think this will impede the flow too much, so I haven't done this yet!
My next plan, is to buy a shower pump, and try that.
If I had a twin shower pump, say 1.5 bar, and I connected the hot feed to BOTH inputs, and BOTH outputs to my tap, would this result in about 3 bar?
If not, could I daisy chain like this Hot feed to inlet 1 outlet 1 to inlet 2 outlet 2 to tap
The reason I ask is, twin pumps seem to be cheaper!