Refilling clear DI housing with resin?

[brvheart]

This should be a simple question. I bought an RO/DI with a clear DI housing which unexpectedly came to me empty. I've heard you have to put 2 foam pieces on the ends to keep the DI resin from coming out. I just can't find the foam and don't know where to get it, if it's required. I'm used to the standard 10" DI chambers.

My RO/DI looks like this, though not this exact one. The DI housing I'm referring to is the uppermost horizontal clear chamber.



Thanks!

[brvheart]

Ok.. I don't seem to be playing with a full deck today. I just opened the di canister and answered my own question. Thanks for looking.

[Buckeye Hydro]

You'll want to unclip that DI and orient it vertically.

Russ

[brvheart]

Originally Posted by BuckeyeFS

You'll want to unclip that DI and orient it vertically.

Russ

Why is that?

Also, what is your opinion of DI chambers like this one vs using a DI cartridge in a standard 10" stand alone chamber?

[Buckeye Hydro]

From our FAQ's:

Horizontal DI housings are a design intended to minimize the original cost of the system - you should be prepared for the tradeoffs. Horizontal DI units typically contain 8 oz. to 16 oz. of resin. Typical vertical DI cartridges contain 20 oz of resin. Obviously the more resin contained in the housing the longer it will last and the better treatment it will provide.

Some horizontal DI housings are not refillable - you'll therefore have to pay for a new housing every time you need to replace the DI resin. The cost of repeatedly replacing the horizontal housing will far outweigh any money saved up-front in purchasing the unit.

Perhaps most importantly, horizontal DI housings are a less than ideal arrangement for water treatment. DI resin beds shrink through normal use over their life span. You'll note that a cartridge that was full when new can sometimes have a ¼ inch of empty space in it when fully expended. When DI resin settles in a horizontal housing, it leaves a pathway (of least resistance) along the top of the housing where water can flow while coming into minimal contact with the DI resin.

You’ll note that the output from the DI housing is at the center of the end of the housing. Depending upon how your system is configured, RO water may enter the DI housing in port, fill up the housing until the water level reaches the out port (i.e., fill up the bottom half of housing), and then exit the DI housing. Your RO water has been in contact only with half the resin in the housing.

Russ

[jerpa]

^ what he said

[sirreal63]

Originally Posted by jerpa

^ what he said

X2, I use two of those DI canisters, mounted vertically and plumbed so that the water enters each unit from the bottom and exits the top. As far as the foam, the best way to tell is to unscrew one of the ends, if you see a round piece of felt attached to the top, no foam is needed. If it does not have that felt or anything to prevent the DI resin from exiting the top then you will need foam or poly batting to keep the DI in the chamber.