[Ian sanderson]

Hi!

I have 50psi and 15lpm water supply at my home. Currently running 300GPD Ro Man type 5 stage filter with Di Resin and I'm getting a water ratio of 1:25 which is shocking - probably needed a booster pump all these years. I'm not on a meter so I've never bothered to check this before now but considering buying a house on a meter and it would be outrageous. I'm also feeling a bit guilty I'm wasting so much water. Although my membrane brings about 275ppm down to 8/9ppm, and is relatively new, but I still think with or without the house move (which I don't know the pressure flow anyway yet), I need to switch to the 4040 system at my current address as this seems the most efficient widely used one.

I'm looking for recommendations first of all on what membrane to go for based on my pressure/flow. Anyone with knowledge on a shut off switch and which one is best compatible with a 4040 unit.
Is there anyone who knows their actual clean to waste ratio for sure on this system? Will there be a bigger waste on the low pressure membrane?

Thanks in advance. I'm sure I may have missed some things off but any help is much appreciated! 

[Simon Trapani]

Just phone June at Gaps Water. Google them. She’s brilliant. Knows everything about water purification.

[Spruce]

Hi!

I have 50psi and 15lpm water supply at my home. Currently running 300GPD Ro Man type 5 stage filter with Di Resin and I'm getting a water ratio of 1:25 which is shocking - probably needed a booster pump all these years. I'm not on a meter so I've never bothered to check this before now but considering buying a house on a meter and it would be outrageous. I'm also feeling a bit guilty I'm wasting so much water. Although my membrane brings about 275ppm down to 8/9ppm, and is relatively new, but I still think with or without the house move (which I don't know the pressure flow anyway yet), I need to switch to the 4040 system at my current address as this seems the most efficient widely used one.

I'm looking for recommendations first of all on what membrane to go for based on my pressure/flow. Anyone with knowledge on a shut off switch and which one is best compatible with a 4040 unit.
Is there anyone who knows their actual clean to waste ratio for sure on this system? Will there be a bigger waste on the low pressure membrane?

Thanks in advance. I'm sure I may have missed some things off but any help is much appreciated! 

So what you are saying is that for every 1 liter of pure you produce you are sending 25 liters of water to waste?

If I've understood this correctly then you obviously don't have a restrictor/tap on your waste to enable this waste to be restricted to between 1 pure to 1 waste up to 1 pure and 3 waste.

Here's a flush valve and restrictor sold by Ro-Man

https://www.ro-man.com/?product=flow-restrictor

https://www.youtube.com/watch?v=T5CFco_Ceog&feature=emb_logo

[Ian sanderson]

I’ll check this out thanks