Quote:
Originally Posted by cavie
The problem is piss poor construction from Forrest River. You cannot glue a ribbed vinyl hose into a PVC coupling. It will be just fine as long as you don't overflow the gray water again. $12.00 for some Flex seal is a bit much unless you have a use for a hole can. It will be fine as there is no pressure on it.
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Cavie,
While I don’t disagree about the ofttimes poor construction and plumbing found in RVs, gluing flexible PVC tubing, like the PVC shown in the picture, is how it is done. You use the same glues and cleaners that you would use for any other PVC job. However, flexible PVC is not something you would use in a normal DWV installation — it is most often used in situations where some internal pressure will be applied, such as whirlpool tubs, swimming pool pump systems and some effluent (and other) pump situations, so the fittings used are usually different from the DWV fittings. PVC pressure fittings are usually used which have a much deeper socket and less play than a DWV fitting, but flexible PVC will work just fine if you prepare and join the pipe/tubing and fittings properly. For normal PVC/DWV installations I use a heavy-bodied PVC glue, which can also be used for flexible PVC pipe/tubing, but I almost always use a “hot’” and thinner-bodied glue for the flexible pipe/tubing because it creates a much more cohesive joint and is also ready for testing and use within just a few minutes, which makes it useful in repair jobs so I can just fix it, test it and leave without telling a customer to wait a few hours and test it themselves.
Flexible PVC is good stuff when it is used for its proper application and installed properly. In the OP’s picture it appears that a pressure fitting with the deep socket was used, so the problem is probably that the installer didn’t use enough glue, or didn’t twist the pipe into the socket, or the joint was moved before the glue had time to weld.
Bruce