[capn sparkle]

As above - anyone use a van based pump to increase o/s tap water pressure! (would need to be 12v). I've tried a spare Shurflo 5.1ltr / min which helped a little but had to run it flat out for 6hrs.

Any suggestions appreciated...

Unable to fit pump inside property and no 240v supply in locality

[richard groves]

Interesting question ! no expert on electrics but would like to know the answer to that also. I know that vyair do a 10 lpm pump, would that improve things or is it the psi that's the important factor ? would it be better to run it from a separate leisure battery so as not to run flat the delivery pump or your vans battery depending on how you have your system powered up ?

[Clever Forum Name]

12V to 240v inverter. Then buy a decent 240v booster pump. Run the inverter off a 12v leisure battery

How long the battery will last I don't know lol

[alfie11]

very good pumps

[capn sparkle]

Interesting question ! no expert on electrics but would like to know the answer to that also. I know that vyair do a 10 lpm pump, would that improve things or is it the psi that's the important factor ? would it be better to run it from a separate leisure battery so as not to run flat the delivery pump or your vans battery depending on how you have your system powered up ?

Mines a pure freedom system (van battery + split relay to leisure batt, also have a spare transit batt in van as cover) the transit batt is easily removeable to charge so was gonna use that as a power supply) Pure Freedom tell me it's psi  'and' litres / min but don't supply said pump. I'm on 12 - 14hrs to fill from empty (and no 2nd vehicle)

[rosskesava]

I was using a 24V booster pump with 2 X 12V 120AH batteries when I used to use the tap in the car park to the tower block where I live.

They'd last about 6 - 8 in hours in total before needing recharging although I take one upstairs one night using a trolley and recharge it and the next night ditto for the other and so on.

Seemed to work ok except now the tap has been removed.

[richard groves]

Interesting question ! no expert on electrics but would like to know the answer to that also. I know that vyair do a 10 lpm pump, would that improve things or is it the psi that's the important factor ? would it be better to run it from a separate leisure battery so as not to run flat the delivery pump or your vans battery depending on how you have your system powered up ?

Mines a pure freedom system (van battery + split relay to leisure batt, also have a spare transit batt in van as cover) the transit batt is easily removeable to charge so was gonna use that as a power supply) Pure Freedom tell me it's psi  'and' litres / min but don't supply said pump. I'm on 12 - 14hrs to fill from empty (and no 2nd vehicle)

van mounted ro ? 12 -14 hrs to fill ! blimey what size tank ? would a larger ro such as a 4040 be a better and ultimately cheaper / easier alternative ?

I run a 4040 ( un pumped ) from my flat to a 600 ltr tank in my van approx 3 hours.
I would like to eventually install everything on board the van as street parking near to my home is becoming increasingly difficult. I have often thought if I could power a booster pump on the van it would  offer some consistency to the speed the pure water was produced and its tds. I could then have some flexibility and choices as to where I filled up when I needed to.

[rosskesava]

12V to 240v inverter. Then buy a decent 240v booster pump. Run the inverter off a 12v leisure battery

How long the battery will last I don't know lol

Tried that a good few years back. You'd need a huge inverter and then if it worked, the battery would go flat in no time. With the inverter I bought, the pump didn't even turn slowly.

1 amp at 240V is 20amps at 12V. The booster pump I had was (I think) 5 amps which equates to 100 amps at 12V.

[richard groves]

I was using a 24V booster pump with 2 X 12V 120AH batteries when I used to use the tap in the car park to the tower block where I live.

They'd last about 6 - 8 in hours in total before needing recharging although I take one upstairs one night using a trolley and recharge it and the next night ditto for the other and so on.

Seemed to work ok except now the tap has been removed.

Cheers Ross, how ya doing ?
was that with your merlin ,  did the booster pump make a big difference as opposed to without ? I suppose if you had a split charge relay to a separate leisure battery for just the booster pump then a days work whist driving would abolish the need for it to be recharged each night.

[rosskesava]

Cheers Ross, how ya doing ?
was that with your merlin ,  did the booster pump make a big difference as opposed to without ? I suppose if you had a split charge relay to a separate leisure battery for just the booster pump then a days work whist driving would abolish the need for it to be recharged each night.

Thanks for asking - I'm doing fine mate. I think drove past you the other day at the Vogue Gyratory.

Yup, that was with the Merlin. It did make a difference but with a Merlin, really you need more ummph than a 24V booster pump can give to make a big difference.

I didn't bother with a split relay as I was going upstairs to my flat every night anyway so it was just as easy to take up a battery with me and charge it and then the next night charge the other.

[Joe Shanahan]

Can you not keep RO in the house and just run a hose to te tank rather than keeping RO in van?