Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: dazmond on April 02, 2025, 06:41:07 pm

Title: Need an RO system....suggestions?
Post by: dazmond on April 02, 2025, 06:41:07 pm
I've no experience with using an RO but inevitably I need to get one as my tap tds is now 213. It's a big shock coming from 025 tds in my flat. I only changed a 25L resin vessel 2 weeks ago and it's already creeping up and this is despite having another vessel behind the fresh one...

1. I have an outside tap with good water pressure

2. I'm NOT on a water meter

3. I have drainage

Ideally I want a portable 'plug and play' system on wheels.

Do you think I'll not need resin at all if I get a decent RO?

Thanks in advance guys
Title: Re: Need an RO system....suggestions?
Post by: SB Cleaning on April 02, 2025, 06:52:31 pm


Do you think I'll not need resin at all if I get a decent RO?

At that TDS your gonna need RO and resin.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 02, 2025, 07:02:24 pm


Do you think I'll not need resin at all if I get a decent RO?

At that TDS your gonna need RO and resin.

Really? I thought a decent RO would get it down to single figures
Title: Re: Need an RO system....suggestions?
Post by: SB Cleaning on April 02, 2025, 07:07:16 pm


Do you think I'll not need resin at all if I get a decent RO?

At that TDS your gonna need RO and resin.

Really? I thought a decent RO would get it down to single figures
It will but you'll still need to Polish the rest of the tds down to 0.
Title: Re: Need an RO system....suggestions?
Post by: CleanClear on April 02, 2025, 07:10:24 pm


Do you think I'll not need resin at all if I get a decent RO?

At that TDS your gonna need RO and resin.

Really? I thought a decent RO would get it down to single figures

Our 40/40 RO (with a booster pump) brings the TDS to zero. Never bought resin in over 14 years or so. How much water are you using a day ? I'd be looking at one of them 450 GPD RO units for a sole operator , they are practically plug and play. You'd also need even a small IBC for it to fill into and then probably a transfer pump to fill the van tank from it. Very rough figures : 450 gpd RO £200, IBC £100, Transfer pump and hose £100...booster pump should you need it £100.
Title: Re: Need an RO system....suggestions?
Post by: CleanClear on April 02, 2025, 07:12:14 pm


Do you think I'll not need resin at all if I get a decent RO?

At that TDS your gonna need RO and resin.

Really? I thought a decent RO would get it down to single figures
It will but you'll still need to Polish the rest of the tds down to 0 with Di if you don't use Di it will wear out the RO quickly too..

Thats not true at all mate. NOT using DI will NOT wear out the RO quickly at all. No one ever tells an RO if the water iss getting finished with DI or not so they tend to just do their own thing regardless  ;D
Title: Re: Need an RO system....suggestions?
Post by: SB Cleaning on April 02, 2025, 07:14:54 pm


Do you think I'll not need resin at all if I get a decent RO?

At that TDS your gonna need RO and resin.

Really? I thought a decent RO would get it down to single figures
It will but you'll still need to Polish the rest of the tds down to 0 with Di if you don't use Di it will wear out the RO quickly too..

Thats not true at all mate. NOT using DI will NOT wear out the RO quickly at all. No one ever tells an RO if the water iss getting finished with DI or not so they tend to just do their own thing regardless  ;D
Yes your right, don't know what i was thinking there just edited it  ;D
If your getting 0 with just RO what's your tap tds to start? Lowest I've ever got mine down to is 4 (215 ish to start).
Title: Re: Need an RO system....suggestions?
Post by: Bungle on April 02, 2025, 07:20:38 pm
I've no experience with using an RO but inevitably I need to get one as my tap tds is now 213. It's a big shock coming from 025 tds in my flat. I only changed a 25L resin vessel 2 weeks ago and it's already creeping up and this is despite having another vessel behind the fresh one...

1. I have an outside tap with good water pressure

2. I'm NOT on a water meter

3. I have drainage

Ideally I want a portable 'plug and play' system on wheels.

Do you think I'll not need resin at all if I get a decent RO?

Thanks in advance guys

Will wife let you put a big eff off IBC in the garage? If not you're bollixed.
Title: Re: Need an RO system....suggestions?
Post by: CleanClear on April 02, 2025, 08:06:05 pm


Do you think I'll not need resin at all if I get a decent RO?

At that TDS your gonna need RO and resin.

Really? I thought a decent RO would get it down to single figures
It will but you'll still need to Polish the rest of the tds down to 0 with Di if you don't use Di it will wear out the RO quickly too..

Thats not true at all mate. NOT using DI will NOT wear out the RO quickly at all. No one ever tells an RO if the water iss getting finished with DI or not so they tend to just do their own thing regardless  ;D
Yes your right, don't know what i was thinking there just edited it  ;D
If your getting 0 with just RO what's your tap tds to start? Lowest I've ever got mine down to is 4 (215 ish to start).

Ours varies a bit between about 140 to 220 TDS. But i think its a bit of a minefield and different for everyone, i suppose its what the remaining stuff in the water actually is as to how efficient an RO is ? (as well as things like flow rate and pressure) .
Title: Re: Need an RO system....suggestions?
Post by: dd on April 02, 2025, 08:28:32 pm
I have not used resin in over 15 years. Product water from RO varies from 003-007.

I would use a 300 or 450 gpd RO feeding a static tank in garage. I use an ancient 300 gpd Roman RO with 3 x 100 gpd membranes. Daqua or Gaps Water is where I would go for advice.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 02, 2025, 08:50:57 pm
I want to purify water on demand with no IBC tank at the end of my working day. How long will it take to purify 400-500L straight into my tank?3-4 hours?
Title: Re: Need an RO system....suggestions?
Post by: deeege on April 02, 2025, 08:53:54 pm
I bought one of these from Pure freedom for my garage when my TDS went from 050 to 350 overnight. This was about 6 years ago and it was priced about £1000 back then. Great bit of kit though and still going strong now, on the same filter too.

Takes roughly 90 minutes to take TDS from 300 ish to 006 and fill 500 litres then resin finish.

(TDS has dropped to 090 recently so it now takes it down close to zero)

https://purefreedom.co.uk/products/high-volume-reverse-osmosis-systems?Membrane+Size=40%27%27&Membrane+Option=HF5&Option=No+Booster+Pump
Title: Re: Need an RO system....suggestions?
Post by: martinw on April 02, 2025, 09:37:09 pm
12lpm with a booster pump that’s what you are  legally allowed to draw from domestic supply - I do not think those rules have changed.  From 720 lph max achievable would be half of that 360 lph realistically this drops to around 40percent at around 288 lph  at the high end . If no booster pump this will result between 90-120lph production subject to your pressure  and temperature of water. At 220 ppm you can achieve  4 -6 ppm water with no resin -  change required it is  to know when to rinse more ie dry windy days . Two choices 4040 hf4 boosted or hf 5 non boosted. In my personal experience with 325-375 ppm hf 4 gives me best results with longevity and performance - 2 years and still between 5-8ppm before resin. Hf 5 lasted only 18 months before going above 16ppm from 10.  If you choose boosted system look for one with flow and waste metres to adjust accordingly. Gate valves tend to fail prematurely in hard water supply. Needle valves offer better adjustment - can’t comment on longevity yet.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 03, 2025, 08:24:57 am
I bought one of these from Pure freedom for my garage when my TDS went from 050 to 350 overnight. This was about 6 years ago and it was priced about £1000 back then. Great bit of kit though and still going strong now, on the same filter too.

Takes roughly 90 minutes to take TDS from 300 ish to 006 and fill 500 litres then resin finish.

(TDS has dropped to 090 recently so it now takes it down close to zero)

https://purefreedom.co.uk/products/high-volume-reverse-osmosis-systems?Membrane+Size=40%27%27&Membrane+Option=HF5&Option=No+Booster+Pump

Thanks Danny. So can I just plug this system into my outside tap and fill my tank after a day's work?90 mins or even 120 mins wouldn't be a too bad time to fill up.

I think I'll wait until the start of the new tax year next week before I pull the trigger on this set up. It's £1500 now but worth it if its giving you 6 years of service and on the same membranes too!🙂👍
Title: Re: Need an RO system....suggestions?
Post by: AuRavelling79 on April 03, 2025, 08:37:04 am
I use the Pentair PRF/PRO (Merlin as was). Been using one for over ten years.

I find that the Membrane gets me down to about 8 - 12 from a TDS of about 300 with a pressure of about 60PSi.

Absolutely NO NEED to be at Zero TDS. I am perfectly happy at 10TDS and even 12/15 if the membranes are getting tired. Then I use resin to polish off for a few months and replace the membrane.

I feed both me and Dan the Man water and neither of us get any complaints about spotting whatsoever.

If you look around you can get one with initial membranes and filter at about £500 plus VAT.

I always buy spares from Soap National - replacing membranes about once a year and filters every 35000/40000 litres.

I have a pressure gauge - important to be 60psi plus. And a meter to measure for filter replacement.

Title: Re: Need an RO system....suggestions?
Post by: Jonny 87 on April 03, 2025, 10:23:58 am
If I could give one bit of advice, It’s go big.

For the extra few hundred quid it’s worth the convenience of having a fast producing RO.

I’ve went from a 350gpd, to a 4021, and now a 4040.

I wish I’d just bought a 4040 10 years ago.
Title: Re: Need an RO system....suggestions?
Post by: deeege on April 03, 2025, 04:20:00 pm
I bought one of these from Pure freedom for my garage when my TDS went from 050 to 350 overnight. This was about 6 years ago and it was priced about £1000 back then. Great bit of kit though and still going strong now, on the same filter too.

Takes roughly 90 minutes to take TDS from 300 ish to 006 and fill 500 litres then resin finish.

(TDS has dropped to 090 recently so it now takes it down close to zero)

https://purefreedom.co.uk/products/high-volume-reverse-osmosis-systems?Membrane+Size=40%27%27&Membrane+Option=HF5&Option=No+Booster+Pump

Thanks Danny. So can I just plug this system into my outside tap and fill my tank after a day's work?90 mins or even 120 mins wouldn't be a too bad time to fill up.

I think I'll wait until the start of the new tax year next week before I pull the trigger on this set up. It's £1500 now but worth it if its giving you 6 years of service and on the same membranes too!🙂👍

Yep just switch the water on and away you go. You’ll need a drain to send the waste also.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 03, 2025, 06:12:49 pm
I bought one of these from Pure freedom for my garage when my TDS went from 050 to 350 overnight. This was about 6 years ago and it was priced about £1000 back then. Great bit of kit though and still going strong now, on the same filter too.

Takes roughly 90 minutes to take TDS from 300 ish to 006 and fill 500 litres then resin finish.

(TDS has dropped to 090 recently so it now takes it down close to zero)

https://purefreedom.co.uk/products/high-volume-reverse-osmosis-systems?Membrane+Size=40%27%27&Membrane+Option=HF5&Option=No+Booster+Pump

Thanks Danny. So can I just plug this system into my outside tap and fill my tank after a day's work?90 mins or even 120 mins wouldn't be a too bad time to fill up.

I think I'll wait until the start of the new tax year next week before I pull the trigger on this set up. It's £1500 now but worth it if its giving you 6 years of service and on the same membranes too!🙂👍

Yep just switch the water on and away you go. You’ll need a drain to send the waste also.

Thanks Danny. That sounds ideal. Did you get any instructions on how to use it? (as I haven't got a clue.)All I know is I have to flush the system every so often and change the membranes/filters every so often. Is yours the HF5?
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 03, 2025, 06:17:49 pm
If I could give one bit of advice, It’s go big.

For the extra few hundred quid it’s worth the convenience of having a fast producing RO.

I’ve went from a 350gpd, to a 4021, and now a 4040.

I wish I’d just bought a 4040 10 years ago.

I'm gonna get the same one as Danny's got from Pure Freedom. I need one that gets the job done fast and lasts a long time. 👍🙂
Title: Re: Need an RO system....suggestions?
Post by: colin bird on April 03, 2025, 06:42:59 pm
I've no experience with using an RO but inevitably I need to get one as my tap tds is now 213. It's a big shock coming from 025 tds in my flat. I only changed a 25L resin vessel 2 weeks ago and it's already creeping up and this is despite having another vessel behind the fresh one...

1. I have an outside tap with good water pressure

2. I'm NOT on a water meter

3. I have drainage

Ideally I want a portable 'plug and play' system on wheels.

Do you think I'll not need resin at all if I get a decent RO?

Thanks in advance guys

Hi daz this is my opinion and this is what I would do in your situation,some will agree others will disagree.

My tds is 270 ish for the last sixteen years I’ve had a  van mounted purefreedom  system 40 inch ro and two 20 inch filters one being a 5 micron sediment filter the other being a 5 micron carbon filter and a 9 inch resin bottle (not the same system as I’ve renewed the system each time I replace the van approx 3 to 5 years )
I change my filters and resin when my tds rises to about 10 which normally happens about every three months and has done for many years and the 40 inch ro used to last about a year but for some reason over the last three years with the same tds reading my ro has lasted three years and my tds stays at 0 for at leat four months this meaning three sets of filters from finer filters @ £35 per year  three nine litre bottles of resin per year and one 40 inch ro every three years  my current ro came from purefreedom before they got in bed with the new company.
What I would say is don’t mess about with trolleys and other stuff,if your putting in a good shift each day and earning good money just go with the above van mounted system you won’t regret it and it will pay dividends and it will look after itself with a small amount of maintenance,that’s what’s worked for me with a tds of 270 over sixteen years
And the above results are from a tap pressure of 60 psi no booster pump
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 03, 2025, 06:59:55 pm
I've no experience with using an RO but inevitably I need to get one as my tap tds is now 213. It's a big shock coming from 025 tds in my flat. I only changed a 25L resin vessel 2 weeks ago and it's already creeping up and this is despite having another vessel behind the fresh one...

1. I have an outside tap with good water pressure

2. I'm NOT on a water meter

3. I have drainage

Ideally I want a portable 'plug and play' system on wheels.

Do you think I'll not need resin at all if I get a decent RO?

Thanks in advance guys

Hi daz this is my opinion and this is what I would do in your situation,some will agree others will disagree.

My tds is 270 ish for the last sixteen years I’ve had a  van mounted purefreedom  system 40 inch ro and two 20 inch filters one being a 5 micron sediment filter the other being a 5 micron carbon filter and a 9 inch resin bottle (not the same system as I’ve renewed the system each time I replace the van approx 3 to 5 years )
I change my filters and resin when my tds rises to about 10 which normally happens about every three months and has done for many years and the 40 inch ro used to last about a year but for some reason over the last three years with the same tds reading my ro has lasted three years and my tds stays at 0 for at leat four months this meaning three sets of filters from finer filters @ £35 per year  three nine litre bottles of resin per year and one 40 inch ro every three years  my current ro came from purefreedom before they got in bed with the new company.
What I would say is don’t mess about with trolleys and other stuff,if your putting in a good shift each day and earning good money just go with the above van mounted system you won’t regret it and it will pay dividends and it will look after itself with a small amount of maintenance,that’s what’s worked for me with a tds of 270 over sixteen years
And the above results are from a tap pressure of 60 psi no booster pump

Thanks for that Colin. The one I'm getting is exactly the same as yours but not van mounted( it's mounted on a frame instead) from Pure Freedom. No room in my van for a van mounted RO.👍
Title: Re: Need an RO system....suggestions?
Post by: colin bird on April 03, 2025, 08:23:47 pm
Ok daz that sounds good to me
Title: Re: Need an RO system....suggestions?
Post by: deeege on April 04, 2025, 09:00:27 am
If I could give one bit of advice, It’s go big.

For the extra few hundred quid it’s worth the convenience of having a fast producing RO.

I’ve went from a 350gpd, to a 4021, and now a 4040.

I wish I’d just bought a 4040 10 years ago.

I'm gonna get the same one as Danny's got from Pure Freedom. I need one that gets the job done fast and lasts a long time. 👍🙂

Pretty sure it comes with instructions but it’s really easy. Plug in your water supply with standard garden hose fitting and turn tap on. Direct the waste down a drain. There’s a switch to change the waste ratio, can’t even remember the settings as I havnt touched it in 6 years.

One thing you will need to do is work out your water pressure to see if it’s a HF4 or HF5 that you need. Pure freedom will talk you through this if needed.

More than welcome to come and have a look at mine before you make the purchase, you probably pass my house on the way to your village work everyday.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 05, 2025, 08:37:36 am
If I could give one bit of advice, It’s go big.

For the extra few hundred quid it’s worth the convenience of having a fast producing RO.

I’ve went from a 350gpd, to a 4021, and now a 4040.

I wish I’d just bought a 4040 10 years ago.

I'm gonna get the same one as Danny's got from Pure Freedom. I need one that gets the job done fast and lasts a long time. 👍🙂

Pretty sure it comes with instructions but it’s really easy. Plug in your water supply with standard garden hose fitting and turn tap on. Direct the waste down a drain. There’s a switch to change the waste ratio, can’t even remember the settings as I havnt touched it in 6 years.

One thing you will need to do is work out your water pressure to see if it’s a HF4 or HF5 that you need. Pure freedom will talk you through this if needed.

More than welcome to come and have a look at mine before you make the purchase, you probably pass my house on the way to your village work everyday.

Thanks Danny I'm going to order it tomorrow(start of new tax year). I'm going for the HF5 as it produces more pure at a lower water pressure so saves buying a booster pump just in case my water pressure is lower than optimal. Although it's powerful on full flow apparently that's not an indication of good water pressure
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 05, 2025, 08:41:23 am
How often do you change the pre filters Danny?( carbon and sediment). Did you say you've never needed to change the membrane yet?

Cheers Danny
Title: Re: Need an RO system....suggestions?
Post by: JandS on April 05, 2025, 10:15:54 am
I thought my pressure was good from outside tap because it was a pretty fast flow and force......when I put it through the  PF  high volume RO system it was only showing 30psi so check it first.....at 30psi it's useless, had to buy booster pump.......last changed the resin on the system about 15 months ago as TDS here is about 80.........TDS jumped up to 270 round here  so was burning up resin so bought the system......4 months later it went back down to 80 again so a bit of a bummer really.........mine does about 125 litres an hour at 100psi in  Spring, Summer and Autumn bit less in colder months.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 05, 2025, 01:09:41 pm
I thought my pressure was good from outside tap because it was a pretty fast flow and force......when I put it through the  PF  high volume RO system it was only showing 30psi so check it first.....at 30psi it's useless, had to buy booster pump.......last changed the resin on the system about 15 months ago as TDS here is about 80.........TDS jumped up to 270 round here  so was burning up resin so bought the system......4 months later it went back down to 80 again so a bit of a bummer really.........mine does about 125 litres an hour at 100psi in  Spring, Summer and Autumn bit less in colder months.

Is yours a HF5? As that's the one that still produces high volume pure water despite lower water pressure. I'm hoping I don't need a booster pump. So it's taking around 4 hours to fill a 500L tank? Danny says his takes around 90 mins and he doesn't have a booster pump.

Why is it a bummer? Surely if your tap tds is 080 again your RO will get it down close to zero so no need for resin at all (saving you money in the long run).

Thanks for your input mate.
Title: Re: Need an RO system....suggestions?
Post by: Phil J on April 05, 2025, 04:47:11 pm
Speak to Doug at Daqua he'll sort you out mate
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 06, 2025, 09:15:39 am
£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....
Title: Re: Need an RO system....suggestions?
Post by: simon w on April 06, 2025, 01:19:09 pm
£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

If your TDS was too high to DI only over the years in your flat, how would you have gone about making your water for work Daz?
Title: Re: Need an RO system....suggestions?
Post by: deeege on April 06, 2025, 02:05:46 pm
How often do you change the pre filters Danny?( carbon and sediment). Did you say you've never needed to change the membrane yet?

Cheers Danny

I buy about 4 carbon and sediment filters at a time and probably  change them every 4 months or so. I’ve not had to change my RO since I installed this static RO about 6 years ago.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 06, 2025, 09:02:45 pm
£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

If your TDS was too high to DI only over the years in your flat, how would you have gone about making your water for work Daz?

Dunno....but it wasn't!😂

It was hovering around 025 most of the 15 years I've been WFP.

Ironically it's perfect for an  RO here. Outside tap on my driveway with drain underneath and no water meter.👍
Title: Re: Need an RO system....suggestions?
Post by: simon w on April 07, 2025, 09:36:27 am
£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

If your TDS was too high to DI only over the years in your flat, how would you have gone about making your water for work Daz?

Dunno....but it wasn't!😂

It was hovering around 025 most of the 15 years I've been WFP.

Ironically it's perfect for an  RO here. Outside tap on my driveway with drain underneath and no water meter.👍

I expect your TDS meter was faulty Daz, I bet you were using 200 PPM on your customers windows for 15 years but they were to frightened to complain .  :D always best to have two TDS metres
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 07, 2025, 03:32:47 pm
£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

If your TDS was too high to DI only over the years in your flat, how would you have gone about making your water for work Daz?

Dunno....but it wasn't!😂

It was hovering around 025 most of the 15 years I've been WFP.

Ironically it's perfect for an  RO here. Outside tap on my driveway with drain underneath and no water meter.👍

I expect your TDS meter was faulty Daz, I bet you were using 200 PPM on your customers windows for 15 years but they were to frightened to complain .  :D always best to have two TDS metres

I have got 2 TDS meters.....the lowest my tap water was in Salford was 018 I think. It's a very soft water area.

It's harder here in Warrington. It's currently 211 and I'm still using resin only(using 2 bags a month and that's with  2 x 25L vessels in tandem)
Title: Re: Need an RO system....suggestions?
Post by: JandS on April 08, 2025, 08:53:38 pm
It's a bummer with the RO because it wastes water and I'm on a meter and it's more faff for me.........DI was quicker filling and I only changed resin around once a month.......used to do some schools and could take the DI with me and top up on site.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 09, 2025, 08:39:58 am
It's a bummer with the RO because it wastes water and I'm on a meter and it's more faff for me.........DI was quicker filling and I only changed resin around once a month.......used to do some schools and could take the DI with me and top up on site.

Your water bills must be astronomical especially with the predicted rise in bills over the next 5 years.

Surely it wouldn't be any less expensive to just run double DI for you over the course of a year.

I was fully prepared for using a bag of resin a month DI only for convenience but I'm using 2 bags per month and I only work 4 short days per week! So RO it is. Luckily no water meter.

Is it true ROs need to be set up for waste 60%/40% pure?
Title: Re: Need an RO system....suggestions?
Post by: deeege on April 09, 2025, 01:44:21 pm
It's a bummer with the RO because it wastes water and I'm on a meter and it's more faff for me.........DI was quicker filling and I only changed resin around once a month.......used to do some schools and could take the DI with me and top up on site.

Your water bills must be astronomical especially with the predicted rise in bills over the next 5 years.

Surely it wouldn't be any less expensive to just run double DI for you over the course of a year.

I was fully prepared for using a bag of resin a month DI only for convenience but I'm using 2 bags per month and I only work 4 short days per week! So RO it is. Luckily no water meter.

Is it true ROs need to be set up for waste 60%/40% pure?

Just have a play with the system when you get it Daz. Increasing the % of the waste will slow down production but be kinder on the RO. Just depends how quick you want the system to produce. You’re not on a meter like me so increasing the waste won’t effect your water bill.
Title: Re: Need an RO system....suggestions?
Post by: JandS on April 09, 2025, 07:10:01 pm
How do you increase/decrease your waste ratio?

Daz.....bought the system when my TDS  shot up to 276 from 80 in August 2022.
It came back down to 80 about 3/4 months later but by then I had committed........about £65 extra on my water bill but was paying about £30 extra with DI anyway plus 4 bags of resin a year.
Mine's an HF4.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 09, 2025, 08:15:49 pm
If your RO gets your water down below 010 do you not bother with resin to polish it off to 000?
Title: Re: Need an RO system....suggestions?
Post by: JandS on April 09, 2025, 08:35:37 pm
RO gets mine down to about 1/2 then through DI.....no need for DI for me really but it's built into system so might as well use it....can't remember last time I changed resin but only done it once since new and it was new in 08/2022.
Bet it's 18 months ago and still getting 0 TDS and 1/2 out of RO before DI.
Any ideas how you increase or decrease waste output on these anybody?
Title: Re: Need an RO system....suggestions?
Post by: Simon Trapani on April 09, 2025, 09:00:59 pm
To decrease the waste & increase the pure turn the gate valve clockwise. To increase waste & reduce pure turn the gate valve anti clockwise.
It’s the same on any 4040.

You need to experiment with a tds meter & find your ’sweet spot’. You should have enough waste flowing over your membrane that you will rarely need to flush if at all. Too little waste & your membrane won’t last long. It’s not as complicated as people make it.

Title: Re: Need an RO system....suggestions?
Post by: CleanClear on April 09, 2025, 10:02:32 pm
RO gets mine down to about 1/2 then through DI.....no need for DI for me really but it's built into system so might as well use it....can't remember last time I changed resin but only done it once since new and it was new in 08/2022.
Bet it's 18 months ago and still getting 0 TDS and 1/2 out of RO before DI.
Any ideas how you increase or decrease waste output on these anybody?

I'm a little bit suprised that you have a HF4 membrane and presumably had it a while and you don't know how to adjust your waste. Its obviously more luck than judgement that you have a functioning system.

ANY RO has a water input (presumably your tap or a booster pump), then it has TWO outputs............
[1] Waste and [2] Product water (or if you prefer 'pure water').

The 'waste' water that comes from your RO 'should' have a tap to it, so you can speed it up or slow it down.

A very rough way to look at this is this :  if you run an RO with a high percentage of water going to waste it should generally result in the pure water you make being very 'pure' .  If you run it with not so much water going to waste (thereby making the RO membranes work harder) it may result in the water you make being not quite as pure as you want it.

By tampering with the ratios of waste water and taking samples you will find a 'sweet spot ' that work for you, the end result being the purest water you can get, wether thats 0 TDS or 15 TDS. Your start TDS will ultimately dictate what you can achieve.

Has your waste actually got a tap on it ? It might be helpful to see a photograph of it. I can't actually fathom out how you are asking this question to be honest.
Title: Re: Need an RO system....suggestions?
Post by: JandS on April 09, 2025, 10:14:01 pm
I run it with the waste fully clockwise as per the instructions.....fully anti clockwise to flush, again as per the instructions......so not really luck or good judgement just following the instruction booklet....it doesn't mention increasing/decreasing waste just fully closed for optimum pure production and fully open to flush.
Title: Re: Need an RO system....suggestions?
Post by: CleanClear on April 09, 2025, 10:14:49 pm

Thanks for that Colin. The one I'm getting is exactly the same as yours but not van mounted( it's mounted on a frame instead) from Pure Freedom. No room in my van for a van mounted RO.👍


When you come to look for an IBC and a transfer pump i'll be the first to remind you . (and you will) .   ;)
Title: Re: Need an RO system....suggestions?
Post by: CleanClear on April 09, 2025, 10:18:39 pm
I run it with the waste fully clockwise as per the instructions.....fully anti clockwise to flush, again as per the instructions......so not really luck or good judgement just following the instruction booklet....it doesn't mention increasing/decreasing waste just fully closed for optimum pure production and fully open to flush.

Ok mate well you've answered your own question. When you said :

(http://www.cleanitup.co.uk/smf/1744233451_Screenshot at 2025-04-09 22-17-13.png)

The answer is you don't need to do any of that. Just follow your instructions. Why do you want to mess about increrasing or decreasing stuff ?
Title: Re: Need an RO system....suggestions?
Post by: JandS on April 09, 2025, 10:21:07 pm
I asked because someone mentioned doing it and I was curious....don't ask don't learn.
Title: Re: Need an RO system....suggestions?
Post by: Simon Trapani on April 09, 2025, 10:28:02 pm
It can’t be fully closed. I think pure freedom drill a whole in the gate valve to make it idiot proof & supposedly the correct ratio.
Title: Re: Need an RO system....suggestions?
Post by: JandS on April 09, 2025, 10:34:44 pm
Okay it's fully clockwise.
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 09, 2025, 10:44:25 pm

Thanks for that Colin. The one I'm getting is exactly the same as yours but not van mounted( it's mounted on a frame instead) from Pure Freedom. No room in my van for a van mounted RO.👍


When you come to look for an IBC and a transfer pump i'll be the first to remind you . (and you will) .   ;)

Why? I don't want an IBC tank in the garage. It's used as a workshop for my missus business so I won't be converting it into a pure water factory!🤣👍
Title: Re: Need an RO system....suggestions?
Post by: NBwcs on April 10, 2025, 08:30:44 am
£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

Sounds an horrendously expensive way of producing water. I get that your Mrs doesn't want you in the garage but isn't there a shed in the garden you could utilise?  An ibc = about £100,ro about £350, transfer pump and hose = not a lot. My water starts off at late 300's sometimes in the 400's,my ro alone brings it down to 5. 1 bag of resin lasts me well over a year, about  £35 a year on filters a year, membranes last for ages...
Title: Re: Need an RO system....suggestions?
Post by: deeege on April 10, 2025, 12:36:24 pm

Thanks for that Colin. The one I'm getting is exactly the same as yours but not van mounted( it's mounted on a frame instead) from Pure Freedom. No room in my van for a van mounted RO.👍


When you come to look for an IBC and a transfer pump i'll be the first to remind you . (and you will) .   ;)

Can’t see any reason why Daz would need an lbc. He’s planning to produce his water exactly the same way as me, and uses a similar amount of water to me. This system is perfect for that. I’d never consider needing an lbc either.
Title: Re: Need an RO system....suggestions?
Post by: dd on April 10, 2025, 03:51:26 pm
How do you stop your tank from over flowing, do you fit a float valve?
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 10, 2025, 06:44:24 pm
£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

Sounds an horrendously expensive way of producing water. I get that your Mrs doesn't want you in the garage but isn't there a shed in the garden you could utilise?  An ibc = about £100,ro about £350, transfer pump and hose = not a lot. My water starts off at late 300's sometimes in the 400's,my ro alone brings it down to 5. 1 bag of resin lasts me well over a year, about  £35 a year on filters a year, membranes last for ages...

It's not cheap I grant you that but it's the best,portable,commercial RO on the market to produce pure water fast without having to drip feed a large tank in the garage and without the need for a booster pump.(HF5)
Title: Re: Need an RO system....suggestions?
Post by: dazmond on April 11, 2025, 09:05:35 am
£1823.94......with VAT and delivery. Hopefully it'll save me a lot of money in resin over the coming years....

Sounds an horrendously expensive way of producing water. I get that your Mrs doesn't want you in the garage but isn't there a shed in the garden you could utilise?  An ibc = about £100,ro about £350, transfer pump and hose = not a lot. My water starts off at late 300's sometimes in the 400's,my ro alone brings it down to 5. 1 bag of resin lasts me well over a year, about  £35 a year on filters a year, membranes last for ages...

There's a very large shed/summer house in the garden with plasterboard,insulation,heating and lighting but it's a cocktail bar on one side and a lampshade making workshop/sewing room on the other!🤣👍

The other small shed at the side of the house is mine. It's got all my garden tools,poles,spare reel,etc,etc.

My missus is already looking at small sheds to house my RO in. It'll be made of plastic or metal and she'll insulate it too.....she's good like that.🙂👍

We also have a garage but it's full of power tools,workbench,curtain tracks,chairs ready to be upholstered and others things for missus business so totally impractical for an IBC tank.
Title: Re: Need an RO system....suggestions?
Post by: JandS on April 11, 2025, 03:46:40 pm
Fill as you need like me.......I have a float valve but it's only kicked in once..........I rarely need the full 500 litres so just stopwatch alarm it....3 hours and I know that with the bit left over from the previous day there will be over 400 litres.......keep 100 litres in drums in garage in case I think I will run over but rarely take them with me...rarely more than about 4 miles from home anyway.