How do you connect 4" corrugated pipe to pvc pipe?
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There is an adapter sleeve that fits over the outside of both pieces of pipe to make the transition. I don't like to use them because they are hard to keep together.
My method is to place a coupling on the end of the PVC to give a larger hole. Make a slit in the top of the corrugated about 2" long parallel with the length so it will compress in a bit. Squeeze the end of the corrugated down so it will slide inside the PVC coupling and secure it from the outside with 3 or 4 stainless steel sheet metal screws about 1" long through the PVC coupling and into the corrugated.. You will need to drill a pilot hole through the PVC coupling to allow the sheet metal screw to go in.
use a pvc adaptor
Perhaps you mean something other than "Corrugated"?
Hopefully the GALVANIZED or other substance of metal pipe that you intend to extend or FIT TO, would be threaded at the end where the connection would take place for the OTHER substance pipe. There are multiple substances to SEAL threaded connections, no matter the base material of the two different pipes. In fact the Metal pipe might actually help with the seal in that its threads may BITE into the PVC threads to a degree, hence aiding in a seal.
In the USA most plumbing coming from a city line, in the street, is likely to be galvanized in older housing, and in upgrades is often attached to and from PVC at the house.
With a 4" coupling.
use a pipe coupling they have rings to tighten them .
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