[matty72]

Can i double check with any of you where you put your pressure gauge to test your psi, also whats the lowest pressure a 4040 can work good on a hf4 membrane, I'm going through everything and just wanting to make sure i have everything correct, cheers

[Ched]

Test pressure  just before the membrane as it's the membrane that needs the high pressure.
When ever you see spec sheets for HF4 they always seem to quote a test pressure of 100psi.

[matty72]

cheers mate thats where mine is  I got a new pressure gauge and mine seems to be reading 40psi, ,it definately used to be higher, even with a pump im not sure i will get to 100psi

[Ched]

cheers mate thats where mine is  I got a new pressure gauge and mine seems to be reading 40psi, ,it definately used to be higher, even with a pump im not sure i will get to 100psi

I think above 80psi will be fine. Below that you might be getting a higher % of waste.

[matty72]

cheers pal

[david mark]

Booster pump  will be better option

[matty72]

I think I will have to , a have a polish pump on got on ebay fairly cheap waisted money only takes it to 60psi, Is 40 psi usual for peoples water at home, seems rubbish to me,

[mac74]

I think I will have to , a have a polish pump on got on ebay fairly cheap waisted money only takes it to 60psi, Is 40 psi usual for peoples water at home, seems rubbish to me,

My pressure is  just under 40psi form the tap, i boost it to around 80psi. The cheap polish 60psi pump you mention will still help, its better than just having tap pressure.

[Ched]

I think I will have to , a have a polish pump on got on ebay fairly cheap waisted money only takes it to 60psi, Is 40 psi usual for peoples water at home, seems rubbish to me,

My tap pressure is terrible. less than 30psi!! Booster pump is a must.

[matty72]

nice one cheers guys, i will keep going with it

[Slash]

I have a pure freedom 4040 static system with the booster pump,it usually is about 40 put will take ot up to 80psi.

[Bungle]

I think I will have to , a have a polish pump on got on ebay fairly cheap waisted money only takes it to 60psi, Is 40 psi usual for peoples water at home, seems rubbish to me,

When I moved house I had to buy an RO as the TDS was a lot higher than my last house. My water pressure was 40psi, then the water board messed around with the piping in the village and it went down to 20psi. My RO wasn’t working very well so I bought an all in booster from Gardiners. Then all of a sudden the water pressure went up to 60psi. I was using an HF5 for low water pressure. I now use an HF4. I can get 100psi easily and have to turn the mains water tap back so as not to put too much pressure through the booster pump. I’d buy a booster pump if I were you. The RO brings the TDS down from 200+ to 006/007.

[matty72]

Cheers  I'm going see how it goes with the pump i have, this all started with what i now know is a  faulty membrane, it just got me looking at everything else as well,  once all have all set back up if I cant get to at least 70psi I will get a booster pump, cheers for the advice everyone