Neoprene Coupling with Chlorinated Water 2

[IgorFelipe]

Hello: Does any one have experience using neoprene materials with chlorinated water (5 ppm). I need to couple two 12" pvc pipes conveying chlorinated water and I have at my disposal neoprene flexible expansion joints from our bone yard. All compatibility tables I checked say that compatibility is "not good," but I wonder is its ok to use for a short period (three months of intermittent use).

I understand that no one would recommend using these two materials but I just want to know if some one has experience. Thanks in advance your any help,

Igor

 

[micalbrch]

5 ppm for three months? I think I would use any material, especially plastics. 5 ppm is an extremely low concentration. I'm sure it will work well.

 

[bimr]

I have seen 2 mg/l of chlorine cause zinc impellers to fail in 6 months.

http://k-mac-plastics.net/chemical-large.htm

The chart shows not recommended for bleach which is 5% chlorine.

You would have to weigh the consequence of a pipe failure. Probably not a good idea.

 

[IgorFelipe]

Thank you so much for your response and comments Micalbrch and Bimr. That compatibility chart is amazingly complete! For the past three days I left a stretched piece of neoprene soaking in the chlorinated water stream and it seems to be doing ok. In my case, the benefits ($2000 saving) outweigh the risk (pumping interruption + delay in ordering the proper fittings) so I'll take the chance. Thanks again; it was great to get outside opinions.

Igor.

PS. I'll post the news if I have any incidents.