[GoodFella2006]

I think i am just thick,can someone explain me this please;

I'm looking at the 12V and 24V RO booster pumps,

This one for example.

Yes it does pump the water at 80 psi,which is very good but,

It pumps 0.13 Gallons Per Minute which is half a litre.

Half a litre goes in to Ro,(1 to 1 ratio) half of that goes to the drain.

So it produces 0.25 liter per minute?

I am looking for an RO booster pump,80 or 100 PSI and at least 10 lpm flow rate.

Only way to do that use 2 shurflo pumps at the same time i believe.



http://www.youtube.com/watch?v=WYZoNaO3E_o

http://www.jracenstein.com/item/150-542/booster-pump-system-12volt/

[GoodFella2006]

Finally found it,here we go,

http://www.vyair.com/scripts/prodView.asp?idproduct=108

[SherwoodCleaningSe]

I'll just give my experience regarding those pumps. I have 2, the pressure switches don't last long switching off at a lower pressure after a few months. The flow is good but not as high as stated when under pressure compared to a flojet. You can bypass the pressure switch if you want.

However they are cheap.

Simon.

[richard jagger]

If you looking for a pump for a R O they are 24  volts pumps as they need to take the strain working against the r o so don`t use a pump made for a pole. the best and cheapest is John Hewett`s web site I have use one for 4 years none stop and never let me down. the wf pole  will not last. I will at a web site for you. Hope that helps. Dont lend your ears to folk who do not know.
http://www.johnhewitt.com/pumps.htm

at the bottom of the page depending on which ro you have .100  200 300 liter use the 100 pump 49 quid.

[GoodFella2006]

Thanks for the replies.

What i want to do is

Push an Amfor TW30XLE-4040 Ultra Low Pressure Membrane to it's limits.

It says it is tested at 100 psi and produced 9800 liters of water a day but

it also states that it is capable of up to 600 psi.

PVC membrane housings can handle 300 psi so

what happens if we pump the water at 200 psi to the membrane?

[richard jagger]

Long before you reach the P S I you are considering all your fitting will blow if not piping will burst and and housing will blow up so carry on its sounds  like you will
 have money to waste.

[SPE]

Finally found it,here we go,

http://www.vyair.com/scripts/prodView.asp?idproduct=108

on vyairs website they have a full 4040 system for sale with that pump fitted on it as a booster pump with a mains adapter
here it is
http://www.vyair.com/Scripts/prodView.asp?idproduct=263
I have spoken to them before with regards to this as I was under the impression a pump like that was no use for a 4040 but they say it works.
I have been considering one for my 4040 as the product tds is dismal because of low pressure, its mounted inside my flat and so the size and noise of a clarkes booster pump is not possible due to me having neighbours below me.
Simon

[dave0123]

you got to consider the amount of water per minute coming out of your tap as well. if there isn't a lot you will starve the RO of water and your tds will rise.

[SPE]

you got to consider the amount of water per minute coming out of your tap as well. if there isn't a lot you will starve the RO of water and your tds will rise.

sorry was that to me or goodfella ?
your theory sounds a good one, my 4040 is an hf5 but I am lucky to get 80% rejection rate from it, it seems a booster pump is a necessity for me, but my situation requires a small wall mounted quiet pump like vyairs.
I guess I'll just have to take their word for it that it works. I do have one of their pumps already on my van and am very pleased with both its price and build quality.
Simon

[GoodFella2006]

I want to to build a system that i can produce water while i'm working.Most of my custemers have outside tap so why carry half a ton of weight?

Planning to buy a 1.3 corsa van,put 2X150 liter tanks in it.

Custies tap -> Hose -> Prefilters -> First tank -> Booster pump -> HF5 4040 RO -> DI Resin -> Second tank

I am even thinking about connecting my 450GPD membranes to the waste outlet from 4040 so reduce the waste and more pure.

The question is what are the limits of the HF5?

How many liters per minute flow or how much water pressure?

Take a look at this pump here.

Runs on 12 volts,26.5 liter per minute output at 80 psi.

If the HF5 can cope with this pump,we might produce 13 liters of pure water per minute.