Aluminum DAF /Filter coating

[nilaypathak]

In the water treatment plant we have installed DAF & Flitter. We found translucent jelly substance along the wall of filter 2 month after the installation. It seems to me aluminum corrosion by manganese or chlorine.
I am trying to find appropriate coating product with NSF approval, which is suitable for aluminum tank and having good chemical resistance.
Thanks in advance for sharing the information and knowledge.

 

[bimr]

What is your application and what chemicals are you using? Why do you require NSF?

 

[nilaypathak]

It is water treatment plant filter therefore product should be suitable for potable water application. Coating is to prevent future corrosion on aluminum.

 

[bimr]

Use of aluminum for tankage is not common in water treatment plants. You need a NSF compliant coating for immersion service which limits your options.

The Amerlock 2 from PPG should work. Contact PPG.

http://ppgamercoatus.ppgpmc.com/NSF/

http://ppgamercoatus.ppgpmc.com/products/pdf/2_PDS_AI.pdf