[jk999]

I am currently  using 11 ltr di and thinking   off changing  it to two 4.5 ltr di's, question I'm asking  is would the two 4.5 s be better than the 11 ltr  with the eleven  I only get two full refill s out  of a bag off resin with the two smaller  ones I will get almost six.  My plan is to not have to change both 4.5 di 's at the same time making my resin last longer I'm not one off the change it at 001 brigade   . I use up to 018 and I always check windows never had a problem yet . Hope you guys understand the question I'm asking ☺

[jk999]

Anyone???

[Smudger]

Get a second 11 litre DI and do what you intended with the 4.5's

You won't be saving anything by using 4.5's as the small size means the resin inside is used up very quickly.
Bigger vessels take longer to use the resin ( mainly because they hold more ) as water isn't forced through a small area of contact

Darran

[jk999]

So what your saying  is it's a waste off time , my thoughts where everyone  says how they creat  channel s in the di's I just thought split the di's to two smaller ones so I don't have to change all the resin in one 11ltr di

[samson]

You will have to change smaller vessels more often !   

[andyM]

So what your saying  is it's a waste off time , my thoughts where everyone  says how they creat  channel s in the di's I just thought split the di's to two smaller ones so I don't have to change all the resin in one 11ltr di

You can make your resin last a bit longer when the TDS  starts rising by emptying it out into a clean bucket and giving it a mix round then putting it back in the vessel.
This method is more effective than just giving the resin vessel a shake. 

[Smurf]

Not trying to be be funny but if you let it go to 18 ppm why bother with resin at all that's if you are using a good ro?
Even harvested rainwater is normally lower than that too. 

It don't matter what size di tanks you use eventualy the resin will become spent and will need changing but using twin, triple or quad inline tanks the resin will last a bit longer. Obviously the smaller the tanks you use the more often you will have to change the spent resin.

[Mike #1]

I am currently  using 11 ltr di and thinking   off changing  it to two 4.5 ltr di's, question I'm asking  is would the two 4.5 s be better than the 11 ltr  with the eleven  I only get two full refill s out  of a bag off resin with the two smaller  ones I will get almost six.  My plan is to not have to change both 4.5 di 's at the same time making my resin last longer I'm not one off the change it at 001 brigade   . I use up to 018 and I always check windows never had a problem yet . Hope you guys understand the question I'm asking ☺

Were are you based i live near Durham  i have an 11ltr vessel from Daqua about year old if your interested .

[jk999]

The point off this topic is I don't want to use an 11ltr di I think I'm wasting resin I want to  separate it into two smaller units so I only have to  change one if I have to.  My question  was would using two or even three smaller ones be just  as good as one

[Smudger]

Two is always better than one - double di'ing as it's usually referred to.

But following up from earlier post your better off with 2  x 11 than 2 x 4.5

Your changeover/refill rate on small vessles will be very frequent, to the point you could find at the run of a water run tds has crept up to an unacceptable level, with the larger size this less likely.

Darran

[Smurf]

Two is always better than one - double di'ing as it's usually referred to.

But following up from earlier post your better off with 2  x 11 than 2 x 4.5

Your changeover/refill rate on small vessles will be very frequent, to the point you could find at the run of a water run tds has crept up to an unacceptable level, with the larger size this less likely.

Darran

+1

[SeanK]

Two is always better than one - double di'ing as it's usually referred to.

But following up from earlier post your better off with 2  x 11 than 2 x 4.5

Your changeover/refill rate on small vessles will be very frequent, to the point you could find at the run of a water run tds has crept up to an unacceptable level, with the larger size this less likely.

Darran

+1

Not really as the water will still be running through roughly the same amount of resin, I buy my resin in 11ltr batches
and for some reason I always get a fill and a half from them.( 11ltr vessel )
I would use the first fill until it reaches about 5ppm and then empty half of the resin and top up with the remainder in the
bag.
The thing is I nearly get the same time out of the half and half fill as I do with the first fill, work that one out

[Smurf]

Two is always better than one - double di'ing as it's usually referred to.

But following up from earlier post your better off with 2  x 11 than 2 x 4.5

Your changeover/refill rate on small vessles will be very frequent, to the point you could find at the run of a water run tds has crept up to an unacceptable level, with the larger size this less likely.

Darran

+1

Not really as the water will still be running through roughly the same amount of resin, I buy my resin in 11ltr batches
and for some reason I always get a fill and a half from them.( 11ltr vessel )
I would use the first fill until it reaches about 5ppm and then empty half of the resin and top up with the remainder in the
bag.
The thing is I nearly get the same time out of the half and half fill as I do with the first fill, work that one out

If you are taking about di only then the resin is getting hammered anyway with high ppm from the tap water.
If using a ro with a  low output ppm the polishing di resin will last ages.

[slap bash]

DI I resin has two types of beads, one set it charged negative and one set charged positive as we all know opperstes attracts. Depending on the dissolved particles being neg or positive the will cling to the opposite beads of resin there are not streames in the vessel and the resin beads will draw the opposite to it. so shaking does have no effect at all. its like a magnetic field. If the tds rises its means the beads are neutralized and will not work. The shacking sound logical but not true.What Peter Fogwell said in another thread is quite true these resin beads just  toughing each other and been wet will reduce the magnetic field and reduce the resin ability to bring the tds down. Good imfo for  geeks.

[Smurf]

it seems channels in standard di's are formed when water flows through the resin so not all of the resin beads can work efficently as they should. After saying that  so from my own experince mixing the resin up in the di when the ppm starts to rise does work to a degree .

[jk999]

Cheers lads ☺

[Smurf]

No probs 

[Smudger]

Sean - my maths are bad how is running through 2 x 11 litre vessels be nearly the same as running through nearly 2 x 4.5's ?

Slappy -  in theory that may be the case, assuming the DI vessel has managed to pass the water through all the resin evenly,, unfortunately the vessels seem to channel water ( maybe over or under full ) so a good shake or empty and refill can give you 000 reading again for anywhere from a couple of days to a week
- that's my experience over the last 5 years

Darran

[SeanK]

Sean - my maths are bad how is running through 2 x 11 litre vessels be nearly the same as running through nearly 2 x 4.5's ?

Slappy -  in theory that may be the case, assuming the DI vessel has managed to pass the water through all the resin evenly,, unfortunately the vessels seem to channel water ( maybe over or under full ) so a good shake or empty and refill can give you 000 reading again for anywhere from a couple of days to a week
- that's my experience over the last 5 years

Darran

As per usual my posts aren't clear,I was comparing two 4.5 bottles against using one 11ltr your maths are fine.

[Smudger]

No problem matey 👍

Darran