[jd services]

I know this a probably a faq but what's the newest solution to filling my van tank in an area with low water pressure? I have a booster pump but it is noisy (neighbours) and it is a hassle to set up. Is there a ro machine that I can keep on my van and fill up wherever i go? Any suggestions welcome. I have to fill up my merlin in a local pub with high water pressure...it's turning me into an alchy.

[Slash]

Get a 4040

[Ian101]

put a wooden soundproofed box over booster pump

[CleanClear]

I know this a probably a faq but what's the newest solution to filling my van tank in an area with low water pressure? I have a booster pump but it is noisy (neighbours) and it is a hassle to set up. Is there a ro machine that I can keep on my van and fill up wherever i go? Any suggestions welcome. I have to fill up my merlin in a local pub with high water pressure...it's turning me into an alchy.

Look at the booster pump attached to this 4040 set up. I'm pretty sure this is the quiet type.
http://www.vyair.com/scripts/prodView.asp?idproduct=263

Maybe speak to vyair see if they can help?

[jd services]

Thanks. 40/40 looks good

[dave0123]

get a 4021 membrane. they work better in low pressure as its smaller.

[rosskesava]

This may sound daft but as mentioned above, put the booster pump in a foam filled box and then hang that from the ceiling on bits of suitable elastic.

The foam absorbs the sound and the elastic absorbs the vibration.

That's what I did in the last place I lived in, in order to not upset next door.

[CleanClear]

get a 4021 membrane. they work better in low pressure as its smaller.

LOL !!!!

[dave0123]

get a 4021 membrane. they work better in low pressure as its smaller.

LOL !!!!

Whats funny? they do! go and read the specification.

Maybe take a little longer to produce water but u get a better TDS reduction.

[CleanClear]

get a 4021 membrane. they work better in low pressure as its smaller.

LOL !!!!

Whats funny? they do! go and read the specification.

Maybe take a little longer to produce water but u get a better TDS reduction.

http://www.gapswater.co.uk/HF4.pdf
Where am i looking in that ?

[dave0123]

thats a 4040 membrane.


...
from gaps website them self's
...

 4" x 21" membrane might be preferable. Flow is just over half the flow you would expect from a 4" x 40" membrane but rejection tends to be slightly higher, i.e. you should achieve an improved tds

[CleanClear]

thats a 4040 membrane.


...
from gaps website them self's
...

 4" x 21" membrane might be preferable. Flow is just over half the flow you would expect from a 4" x 40" membrane but rejection tends to be slightly higher, i.e. you should achieve an improved tds

You might be getting confused Dave. The HF4 comes in all sizes, including the 4021. Flow is very different to pressure. To the best of my knowledge there is nothing to indicate a 21 inch membrane needs less pressure than a 40 inch one. The documentation makes no such distinction.

[dave0123]

i know flow is different from pressure, i have low water flow. The HF5 membrane would be better in a low pressure area anyway the HF4 is for 60psi plus.

-
 4" x 21" membrane might be preferable. Flow is just over half the flow you would expect from a 4" x 40" membrane but rejection tends to be slightly higher, i.e. you should achieve an improved tds

the above statement is from gaps water treatment description of membranes.it makes sense! its half the size of the 40 inch RO, you cant say a 21 inch and 40 inch are identical.

anyway june at gaps water have confirmed this for me due to me asking one two questions regarding the membranes as i am after a new one end summer. the response was this.

--
If you were thinking of a hf5 then I'd go smaller (hf5-4021) from experience I know better tds results are gained using a smaller membrane as you are running closer to the manufacturers recommended running conditions.

-

In other words if you have low flow of water from the tap or psi this would be better option. its smaller and requires less to reach the required specification.