ptfe thread seal How to Replace a Galvanized Drainpipe With PVC

by:DSH     2019-06-08
ptfe thread seal How to Replace a Galvanized Drainpipe With PVC
Galvanized drain pipe corrosion from the inside.As rust accumulates inside the pipe, its inner diameter becomes smaller over time, leaving less area for drainage.The jagged edges caused by corrosion can also hinder the flow by capturing waste and causing blockage.In the end, the pipe will be corroded all the time, usually at the threaded joint.The best solution for corrosion galvanized drain pipe is to replace it with PVC, called PVC cut. Cut the section of the corroded galvanized pipe with a reciprocating saw with a metal cutting blade.You can also cut it with a hacksaw, but it takes longer and is harder.Cut anywhere between the two threaded joints.Do two cuts near each coupling.Remove the corroded tube.If you plan to connect to the existing PVC further down the drain line, cut the galvanized pipe and then cut near the nearest end of the PVC pipe.Set up two pipe wrenches, one fixed and one turned to remove the two coupling.Only two males left.threaded ends.Clean a set of threads with a brush and a rag.If you intend to connect to a piece of PVC at one end, you only have one galvanized joint to disassemble.Application of polyester or PTFE thread-Seal the tape to a clean thread.This prevents thread leakage.Screw the PVC female adapter onto the thread and tighten it with a pipe wrench.At the other end, insert the rubber mechanical coupling.This is suitable for galvanized and PVC pipes.Remove the metal sleeve and slide back onto the tube.Roll back the rubber so there is room to plug in the new pipe.Measure the mechanical coupling from inside the female adapter and cut a section of PVC pipe for installation.Apply a PVC cleaner on one end of the pipe and then PVC cement on it.Insert the pipe into the PVC master adapter and twist it slightly to spread the glue.Keep it for about 15 seconds and let the glue catch it.At the other end, roll the rubber coupling on the new pipe.Slide the metal sleeve over the mechanical coupling and tighten the buckle with a screwdriver.
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