[Shrek]

Ok so I'm fed up with my ultra slow production of pure now . My tap pressure is 3.5 bar so I use a booster pump for my 300gpd ro system and takes around 33 hours to get 1000 Ltrs.
So , I'm thinking instead of get another 150 gpd membrane and upgrading slowly , just go for the best .
Which would you guys go for - a 4040 or 4021 ? Is the only difference between the too the amount of pure which can be produced?
Also , is daqua the place to get it from?

Thanks in advance! 👍

[Clever Forum Name]

I was is in the same boat and decided on the 40/40 route.

My only regret is i didn't do it sooner.

it's hard to explain but there has been numerous scenarios this year where a 40/40 would have been a real life safer.

I have always used a static system but it was a PPB system and took an hour to "pump on" to my van. So now i just use PPM water and 32mm pipe and fill 850L tank in around 5 mins.

40/40 and fast pump for the win!

[Shrek]

I was is in the same boat and decided on the 40/40 route.

My only regret is i didn't do it sooner.

it's hard to explain but there has been numerous scenarios this year where a 40/40 would have been a real life safer.

I have always used a static system but it was a PPB system and took an hour to "pump on" to my van. So now i just use PPM water and 32mm pipe and fill 850L tank in around 5 mins.

40/40 and fast pump for the win!

Awesome, cheers - did you get your 4040 from daqua ? Or another supplier ?

[Shrek]

* edit * Iv just measured it and pure production is 1 ltr in 3 minutes 

[Smurf]

Our friends from accross the pond tend to use 4040 portible setups for pure on demand so they don't need to cart loads of water about. Over here most either go for a static or onboard which both have there pro's and con's but not many use both.

[Shrek]

Our friends from accross the pond tend to use 4040 portible setups for pure on demand so they don't need to cart loads of water about. Over here most either go for a static or onboard which both have there pro's and con's but not many use both.

Il be storing it when Iv made it then transfer to van as and when . ATM it's an inconvenience having the RO on all day long to produce very little

[Smurf]

Can I ask what size van tank do you have?

[Clever Forum Name]

I do use Daqua but i went with Vyair in the end.

It came in cheaper with a stainless steel housing and some better fittings.

Been told that vyair might use a cheaper membrane but Sam who i deal with is faultless. The Ro has been producing 1500L a day 5/6 days a week and has been absolutely faultless.

425PPM - 475PPM in @ 65 psi -70 psi tap pressure produces 11PPM -13PPM at around 120l - 150L per hour.

[martinw]

current setup 4040 , around 400 ppm in, 35psi tap pressure boosted  to 100-120 psi  gives 6 lpm at 8ppm. Ratio 50/50 roughly.

[Shrek]

Can I ask what size van tank do you have?

Iv got a 350ltr at the mo but upgrading next year , got a 1000ltr ibc in the garage

[Shrek]

I do use Daqua but i went with Vyair in the end.

It came in cheaper with a stainless steel housing and some better fittings.

Been told that vyair might use a cheaper membrane but Sam who i deal with is faultless. The Ro has been producing 1500L a day 5/6 days a week and has been absolutely faultless.

425PPM - 475PPM in @ 65 psi -70 psi tap pressure produces 11PPM -13PPM at around 120l - 150L per hour.

That sounds ideal , cheers

[Shrek]

current setup 4040 , around 400 ppm in, 35psi tap pressure boosted  to 100-120 psi  gives 6 lpm at 8ppm. Ratio 50/50 roughly.

That's great results, think il defo go for the 4040 option . Might even save me some dosh on my electric bill not having to have the booster pump on as long as it is at the mo

[Smurf]

Can I ask what size van tank do you have?

Iv got a 350ltr at the mo but upgrading next year , got a 1000ltr ibc in the garage

That's the problem most find as they can soon outgrow the tank size and max payload of a van so starts to get expensive having to keep updating as pure demand increases.

I found this the case as for example when you land much larger jobs like say blocks of flats etc. That is when an ro/di van mount or portable that can run as an on demand system with an endless supply of pure has its avdvantages over using a static system.

Having both options I woud say gives you the best of both. Mind the lucky ones with realy soft water (really low tds) running di only can full their van tanks from anywhere with just tap water and/or run it as an on demand system if they so wish too.

[Michael Peterson]

i got a 4040 thee years ago havent flushed one time and dont use resin it gets me 11 from 350 ...