Where the
world gathers for metal finishing
Q&As since 1989


-----

Pool filter mfgr. needs cage coating for chlorine tablets

Has anyone used polyester resin mixed with a hardener to coat steel? We want to protect our filter cage from concentrated chlorine they use to purify pools and spas. We did not have a problem until tablets were actually put inside our filters' center core. Heavy rust appeared. Or, maybe you have another coating that will work. Must give us a two to three year life.

Thank you

Bob Fox
filter manufacturer - Bowling Green, Ohio
2004

I would look at a plastisol. A dip vinyl would be easier, but might not be as durable.

James Watts
- Navarre, Florida
2004

---

Bob,

What James says is l00% correct.

Not knowing the make-up of your filter, maybe, perhaps, who knows, you could use perforated PVC ... this has an open area of around 26%. But if you joined it into a cylinder, I'd use a 'sleeve' to join it together unless you know of a highly proficient thermoplastic welder.

Food for thought, anyhow.

Freeman Newton [deceased]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).
2004