MPdesign Posted January 30, 2017 Report Posted January 30, 2017 I was told that the water from the above was too hot and this was caused by overheating/melting of the pipe? This is PVC DWV pipe that they painted black along with everything else in the ceiling. Click to Enlarge 22.84 KB what are your thoughts?
Bill Kibbel Posted January 30, 2017 Report Posted January 30, 2017 Heat from a chemical reaction. Likely sulfuric acid drain cleaner.
MPdesign Posted January 30, 2017 Author Report Posted January 30, 2017 I doubt that it will, but... Will any other type of plastic pipe work better?
Bill Kibbel Posted January 30, 2017 Report Posted January 30, 2017 Yes. CPVC is often used for DWV and floor drains in industrial buildings.
John Kogel Posted January 31, 2017 Report Posted January 31, 2017 No way hot water did that. PVC starts to decompose when the temperature reaches 284 degrees F, with melting temperature starting around 320 degrees F. That's from Wikipedia. PVC pipe can be bent by heating it in a double boiler, so some types will soften at 212 degrees F. I think Bill is probably correct, or those could be stress cracks from Sumo wrestlers using the crapper upstairs. []
MPdesign Posted January 31, 2017 Author Report Posted January 31, 2017 Now that you mention it, there is a white line around the fitting joint on 2 sides that is white - which indicated movement.
Jim Baird Posted January 31, 2017 Report Posted January 31, 2017 Looks also like plain old physical damage, like maybe by the top of a forklift or other kind of lift device.
werty88 Posted March 22, 2017 Report Posted March 22, 2017 This could be due to the heat from any chemical reaction.
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