[craigR]

The water pressure at my place seems low to average to me at 11 and half litres per minute is this sufficient for a 40:40 without a booster pump ?

Thanks.
Craig

[8weekly]

Don't forget the halfway house of a Merlin.

[mufcglen]

how do you guys check the pressure at the tap,is there a gauge you can buy?

[p1w1]

The water pressure at my place seems low to average to me at 11 and half litres per minute is this sufficient for a 40:40 without a booster pump ?

Thanks.
Craig

Thats just a flow rate of the water, not the mains tap pressure, you need to see what this is really.

[p1w1]

how do you guys check the pressure at the tap,is there a gauge you can buy?

something like this http://www.screwfix.com/p/monument-tools-mains-water-pressure-test-gauge/82412 maybe cheaper elsewhere.

[mufcglen]

thanks pal, 2 more questions!!
the ro housing ive noticed theres 2 types, the stainless one and the white plasic champ housing, which is better?
secondly the 10 or 20 inch prefilters, looking on daqua site says they need to be replaced every 20'000 litres surely your gonna go through a few of them every few weeks?

[p1w1]

thanks pal, 2 more questions!!
the ro housing ive noticed theres 2 types, the stainless one and the white plasic champ housing, which is better?
secondly the 10 or 20 inch prefilters, looking on daqua site says they need to be replaced every 20'000 litres surely your gonna go through a few of them every few weeks?

Not sure really i use the plastic version and its solid and has been fine (my thinking  was that it might have a better insulation for the membrane in the freezing temperatures then the metal version)
As for filter size personal preference really i guess. I use 10" ones as i already had them. I would say get your sediment filter housing in the clear version, its much easier to see when its getting green and needs changing instead of having to keep unscrewing it to check.
Pre filters will always be recommended to change at certain times no matter what system you use. Fibredyne filters are supposed to be changed less frequent then your standard carbon filter but the do cost more, i personally dont change mine that often as recommended, generally i change the carbon filter every 3-4 months and the pre filter once its gone green all the way through.
If you have a pressure gauge after your pre filters that can also help you know when its probably time to change them when the pressure starts dropping a bit.

[Spruce]

thanks pal, 2 more questions!!
the ro housing ive noticed theres 2 types, the stainless one and the white plasic champ housing, which is better?
secondly the 10 or 20 inch prefilters, looking on daqua site says they need to be replaced every 20'000 litres surely your gonna go through a few of them every few weeks?

Not sure really i use the plastic version and its solid and has been fine (my thinking  was that it might have a better insulation for the membrane in the freezing temperatures then the metal version)
As for filter size personal preference really i guess. I use 10" ones as i already had them. I would say get your sediment filter housing in the clear version, its much easier to see when its getting green and needs changing instead of having to keep unscrewing it to check.
Pre filters will always be recommended to change at certain times no matter what system you use. Fibredyne filters are supposed to be changed less frequent then your standard carbon filter but the do cost more, i personally dont change mine that often as recommended, generally i change the carbon filter every 3-4 months and the pre filter once its gone green all the way through.
If you have a pressure gauge after your pre filters that can also help you know when its probably time to change them when the pressure starts dropping a bit.

That's a good answer with regard to the difference between stainless and 'plastic' 4040 housings.

[Spruce]

thanks pal, 2 more questions!!
the ro housing ive noticed theres 2 types, the stainless one and the white plasic champ housing, which is better?
secondly the 10 or 20 inch prefilters, looking on daqua site says they need to be replaced every 20'000 litres surely your gonna go through a few of them every few weeks?

I went for 20" prefilter housings as the filters will last longer.

The 20" Fiberdyne carbon filter is good for 75,000 liters according to the suppliers spec. Doug from Daqua once posted that the chlorine content in the water will become less the further you are from the dosing station. So it could be that those filters could last even longer, but I stick with the 75k. The membrane is 5 years old next month and still performing to spec so this service schedule is working for me.

We are using less water than we did a few years ago.  A few years ago there was 3 of us drawing water from the system.  We were using about 26000liters of water a month through the r/o = waste and pure. As our waste to pure ratio is 1 to 1 we used about 13,000 of pure a month. (I have a water meter on the r/o.) So carbon block prefilter changes were done about every 3 months. As our water is full of sediment from time to time, I have be known to replace the sediment filter once a month.

I have a pressure gauge on each side of the prefilters. Once the gauges start to read a difference of 10psi I change the sediment filter. I'm approx 32,000 liters from the last filter change and it looks as though I will be replacing the sediment filter shortly.  I also recommend clear housings - they cost slightly more but you can visually see the state of the sediment prefilter without taking the filter out to inspect it as p1w1 says.

We got a warning tag in a set of GAC filters I purchased when I first bought the 4040. The label says it had a service life of 2500 USA gallons or 10000 liters.  Obviously if I used those then I would need to replace them every 10 days or so if we were still using the same amount of water as we did.
   

[takinatrip]

Ok so water pressure is 32 psi and flow rate of 6.5 ltr per min.
Is it going to work effectively?

Did someone mention a Merlin? Can you still buy these?

[andyM]

Ok so water pressure is 32 psi and flow rate of 6.5 ltr per min.
Is it going to work effectively?

Did someone mention a Merlin? Can you still buy these?

Looks like you will need a booster pump.

[JandS]

If your using 500 litres a day with TDS of 76 your going to have a lot of waste per week....mine is 100 and I've just gone double Di due to all the waste water....I am on a water meter though.
6000 litres to get 2500 litres pure a week would cost around £20 per week in water rates above your normal consumption so £80 per month on top of your normal water charges......if your not on a meter though your ok.

[mufcglen]

If your using 500 litres a day with TDS of 76 your going to have a lot of waste per week....mine is 100 and I've just gone double Di due to all the waste water....I am on a water meter though.
6000 litres to get 2500 litres pure a week would cost around £20 per week in water rates above your normal consumption so £80 per month on top of your normal water charges......if your not on a meter though your ok.

cheers mate yes im not on a water meter otherwise i'd have stuck with double di set up!
very confusing all this ro stuff

[johnny bravo]

I have often looked for advice about changing over from my 300 RO.     i use atm     around 2000 - 2500  some weeks,      it means RO goes on during day,    sometimes evenings,     i try to keep 2x220 butts full, as well as 500  tank in van
I work from the kitchen ,   my kitchen faces driveway, front of house,   mrs says no ibc tank in garden.    I have no access to water supply at rear of house.      I just cannot get my head round as how and where to set up a 4040,          if i had the vision and plumbing know how i think i would try a 4040 set up.
Has anyone set up a 4040 in my scenario.    house front water supply

[Terry A]

I've just bought a great R/O from pure freedom
Have a look on their website you should find one that suits your needs
You have to remember you only get what you pay for. Produce more water,clean more windows,earn more money
I also have poor water pressure so need their large booster pumps as well.it produces more in 2 hours than my old system did in 8. 😁😁

[takinatrip]

What did you buy Terry A?

[Dave Anderson]

johnny bravo >>>> Bury a 2000litre tank in the front with room for the 4040 then cover it over with something to hide over the inspection hatch.....  nothing for the neighbors or wife to worry about...easy peazy lemon squeezy... only thing to really sort is where the waste will go but perhaps you have that sorted.

There is nothing rocket science about a 4040.... just water in, filters, waste, good water into tank, sub pump for to get water from tank to van... Cheers Dave

>>> https://www.tanks-direct.co.uk/water-tanks/underground-tanks/plastic-underground-water-tanks/2000-litre-underground-water-tank.html

[mufcglen]

Are these any good from Brodex on offer?
http://www.brodexbms.co.uk/products/great-special-offers/ultra-low-pressure-membrane-stainless-steel-housing-bundle-40

[p1w1]

Are these any good from Brodex on offer?
http://www.brodexbms.co.uk/products/great-special-offers/ultra-low-pressure-membrane-stainless-steel-housing-bundle-40

I think you will find  your probably best to stay away from Brodex search on here to see what many people think of them and their customer service. It also doesnt state what type/make of membrane you are getting so they could be putting a cheap chinese membrane in thats not going to last long at all, if it was coming with a high spec best quality membrane then they would be advertising the fact.
Stick with a reputable company that are known to supply good quality membranes and systems... buy cheap buy twice.

[Spruce]

johnny bravo >>>> Bury a 2000litre tank in the front with room for the 4040 then cover it over with something to hide over the inspection hatch.....  nothing for the neighbors or wife to worry about...easy peazy lemon squeezy... only thing to really sort is where the waste will go but perhaps you have that sorted.

There is nothing rocket science about a 4040.... just water in, filters, waste, good water into tank, sub pump for to get water from tank to van... Cheers Dave

>>> https://www.tanks-direct.co.uk/water-tanks/underground-tanks/plastic-underground-water-tanks/2000-litre-underground-water-tank.html

One of Jonny's problems is that he only has a trickle of water from his tap. Everyone else who lives in the same city as he does has good water flow and pressure.
He really needs to investigate why he has a slow flow of water to his property when other's in the same city don't experience it.

It could have something to do with a previous resident not paying his water bill, who knows. In a case like that the water board insert a device to restrict the flow of water to that property. For health reasons they can't stop the supply altogether.

Jonny parks his van on the driveway, so there is nothing stopping him processing water directly into his van tank. The problem is he doesn't have enough water to run a big r/o.
.