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Question:

What is the best combination going to RO: sediment, carbon and resins, or sediment, resins and carbon?

What is the best combination going to RO: sediment, carbon and resins, or sediment, resins and carbon?

Answer:

I am a plumber and you do not want to use an all cpvc adaptor you are asking for trouble they will certainly leak. plus it is better to use thread sealent paste rather than the tape this is because the tape has a habit of coming undone when screwing the pipe together. If you mess up and put the tape on in the wrong direction you have to take it off and start over with the paste you don;t you get it right everytime. The second link is a picture of the type of fitting you will need. The first is to explain why you need a cpvc to metal adaptor not just cpvc adaptor. For a plastic-to-steel pipe transition (Fig. 3), you'll need a male adapter that will secure the plastic unthreaded pipe to the female-threaded steel pipe fitting. This adapter has a glueable hub on one end to accept the plastic pipe, and brass male pipe threads on the other end to screw into the galvanized fitting. For plastic pipe (CPVC), do not use the all-plastic adapters to screw onto the metal pipe, for these may leak. Although the CPVC fittings with brass at the threaded section are more expensive, they are definitely worth it.
So annoying, I hate when they do that here at the apartments where I live at, I just grab a chair with my neighbors and sit outside and chat until they tell us their finally finished!!

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