[andy east sussex]

we just moved property the pressure going in to system is only 40psi I have low pressure membrane but guess I still need more pressure theres ro booster pumps on ebay for like £65 would they do the job even tho they do say don't use for window cleaning ??

[Spruce]

I've had 40 psi at the tap for the last year. HF5 membrane. I don't use a booster pump and my 4040 r/o produced about 2 litres pure to 2 litres waste in the winter. TDS at the tap = 125 and TDS after r/o and before DI = 2. Our water volume isn't brilliant as we are on the end on the ring main.

I'm happy with that.

My advise would be to run it for a while and keep an eye on performance - you can then make an informed decision later.

[andy east sussex]

this is the membrane which is inside


 XLE 4040 Filmtec membrane