[rycalshaw]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

[CleanClear]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

Hiya !! I think the answer is yes, larger membranes will speed up your water production.

Lets take a look at what you said........'i'm currently using 100GPD membranes'..... well GPD means Gallons Per Day.
You could pop a search into Ebay for 450GPD RO kit , thats probably gonna give you something a whole lot faster.

[rycalshaw]

Hi mate' thanks for your reply '  i should have said 100gpd x3 membranes'  would moving up to 450 as you suggested mean upgrading my 3 membranes to 150gpd each..thanks

[AuRavelling79]

Hi mate' thanks for your reply '  i should have said 100gpd x3 membranes'  would moving up to 450 as you suggested mean upgrading my 3 membranes to 150gpd each..thanks

Yes.  However - although they are still 10" they are wider and you may need wider housings. I'm not sure.

Sometimes it's cheaper to buy a whole discounted RO when you add up all the costs of the various upgrade bits.

[dazmond]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

How long does it take to purify say 500L water?

I've ordered a 4040 HF5 RO and im hoping I'll be able to purify 500L in 3 hours with no booster pump

[rycalshaw]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

How long does it take to purify say 500L water?

I've ordered a 4040 HF5 RO and im hoping I'll be able to purify 500L in 3 hours with no booster pump

i have an ibc tank and to fill it it takes around 5 days...

[dd]

Either
1 You have a very big IBC tank
2 You have low water pressure
3 Your membranes are shot

[dd]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

How long does it take to purify say 500L water?

I've ordered a 4040 HF5 RO and im hoping I'll be able to purify 500L in 3 hours with no booster pump

It largely depends on your water pressure.

[dazmond]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

How long does it take to purify say 500L water?

I've ordered a 4040 HF5 RO and im hoping I'll be able to purify 500L in 3 hours with no booster pump

i have an ibc tank and to fill it it takes around 5 days...

5 days? That's absolutely ridiculous! Surely changing the membranes will help speed it up

[Don Kee]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

So by the sounds of it you’re using a 10” RO.
Upgrade your membranes to 150gpd membranes (making it a 450gpd) and add in a booster pump (aquatec 8800 is decent)

Personally though, I’d consider buying a 4040, especially seeing as you have an IBC.
I understand the price difference can be a little off putting in comparison but once you have one you wont regret it.

[Spruce]

Hi mate' thanks for your reply '  i should have said 100gpd x3 membranes'  would moving up to 450 as you suggested mean upgrading my 3 membranes to 150gpd each..thanks

Yes.  However - although they are still 10" they are wider and you may need wider housings. I'm not sure.

Sometimes it's cheaper to buy a whole discounted RO when you add up all the costs of the various upgrade bits.

150 gpd membranes will fit into the standard housings.

I did that. However, if the o/p thinks he is going to get a vast increase in water production, this won't happen.

Personally, a 450gpd processing water into a 1000 litre ibc tank was more than enough for me working on my own. But with 50psi water pressure it took a good 28 hours to fill my ibc tank to 850 liters in summer. I could add another 12 hours to that in winter.
I have a float switch on the tank which switches the water off to the r/o when the tank is full.

When my son joined me in 2008 the r/o wasn't enough to supply both of us. A bad weather day did help.
If the o/p needs a high production rate, then it's a 4040. When I changed over to my 4040, I was in awe at the water production rate. I was getting just on 2 litres per minute of pure in summer with 55psi water pressure and no booster pump with an Axeon hf5 membrane.

[colin bird]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

How long does it take to purify say 500L water?

Hi daz I have a hf4 40 inch ro tap pressure 60psi,I’ve not measured water production but I reckon I can produce  300 to 350 l in three hours,as above not measured just a rough guess

I've ordered a 4040 HF5 RO and im hoping I'll be able to purify 500L in 3 hours with no booster pump

[Spruce]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

How long does it take to purify say 500L water?

Hi daz I have a hf4 40 inch ro tap pressure 60psi,I’ve not measured water production but I reckon I can produce  300 to 350 l in three hours,as above not measured just a rough guess

I've ordered a 4040 HF5 RO and im hoping I'll be able to purify 500L in 3 hours with no booster pump

My experience is that Colin is about right with his guesstimate. Even with a 4040, processing water in winter takes longer than when the water is warmer in summer into autumn.
When my HF5 was new in the September, I got just short of 2 lpm of pure. During this past winter I've noticed it wasn't producing the same as it once did, so checked the rate. I was getting fractionally over 1 lpm. It has since improved a bit but will do another check after Easter when I'm back at work again and drawing water.

I process water into an IBC tank in the garage. I need to draw about 200 litres before the r/o kicks in. I've done this purposely so the r/o runs as efficiently as possible for the longest time before it switches off when the tank is full.

I also have my r/o on a timer so process water overnight when we aren't using water after we go to bed. Just to ensure that I don't flood the garage should anything go wrong, I do have an overflow hose to an outside drain.

[dazmond]

Hi guys' will using larger membranes speed up my water production ? ' i'm currently using 100gpd membranes but the production is painfully slow. Cheers

How long does it take to purify say 500L water?

Hi daz I have a hf4 40 inch ro tap pressure 60psi,I’ve not measured water production but I reckon I can produce  300 to 350 l in three hours,as above not measured just a rough guess

I've ordered a 4040 HF5 RO and im hoping I'll be able to purify 500L in 3 hours with no booster pump

My experience is that Colin is about right with his guesstimate. Even with a 4040, processing water in winter takes longer than when the water is warmer in summer into autumn.
When my HF5 was new in the September, I got just short of 2 lpm of pure. During this past winter I've noticed it wasn't producing the same as it once did, so checked the rate. I was getting fractionally over 1 lpm. It has since improved a bit but will do another check after Easter when I'm back at work again and drawing water.

I process water into an IBC tank in the garage. I need to draw about 200 litres before the r/o kicks in. I've done this purposely so the r/o runs as efficiently as possible for the longest time before it switches off when the tank is full.

I also have my r/o on a timer so process water overnight when we aren't using water after we go to bed. Just to ensure that I don't flood the garage should anything go wrong, I do have an overflow hose to an outside drain.

I'm getting a water pressure gauge from screwfix today. I'll just screw it onto my outside tap and hope it's good pressure.

What would be a good pressure reading for using a 4040 HF5? 60-80psi?

No sign of RO yet. Hopefully it'll get delivered next week.

[dazmond]

37psi.....I don't think an HF5 4040 will even work at such low water pressure will it?

[colin bird]

37psi.....I don't think an HF5 4040 will even work at such low water pressure will it?

i think it will work daz at 37psi but will be very slow,due to low pressure not being able to force the water into the ro,so there will be a lot of waste.
what ive noticed here is when southern water drop the pressure my ro syill works but at a much slower rate
my mate has hf4 tap psi 40 it still produes pure but at a slower rate compared to me

[Splash and dash]

37psi.....I don't think an HF5 4040 will even work at such low water pressure will it?

Just get a decent booster pump

[dazmond]

37psi.....I don't think an HF5 4040 will even work at such low water pressure will it?

Just get a decent booster pump

Thankfully the HF5 membranes still produce a high volume of water at very low water pressure so I think ill be ok mate.

Purefreedom will not allow me to buy a booster pump with a HF5 4040 membrane on their site as there's simply no need for it.🙂👍

[dd]

37 psi probably won't be the running pressure. The pressure drops when RO is running, as opposed to just taking a reading on the gauge when no actual water is running to be processed by the RO. You will need a booster pump.

The pressure will probably increase a little overnight because there is less demand on the water supply generally.

[Spruce]

37 psi probably won't be the running pressure. The pressure drops when RO is running, as opposed to just taking a reading on the gauge when no actual water is running to be processed by the RO. You will need a booster pump.

The pressure will probably increase a little overnight because there is less demand on the water supply generally.

We live in a cul de suc and are at the end of the water supply ring main. The supply pipe sprung a leak across the road before the first house in our cul de sac. It took the water board a week before they came to sort the leak out.

Our water pressure was down to 40 psi. We still had enough water to work with. I didn't measure the water production rate but instead of a rejection rate of 3 from a tds of 125 it was 5/6 ppm for that week.

Another thing daz may want to consider is to replace the waste gate valve if he is buying the r/o from PureFreedom. PureFreedom supply a gate valve with a hole drilled in the paddle.

If he purchases a like for like one from a plumbing supplier, then he will be better able to better adjust his waste water, knowing that he must never fully close the valve.

I had to close my water valve more when our water pressure was low or else our waste to pure ratio was wrong.