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Schedule 40 pipe vs. Schedule 80 pipe

Q. What is the difference between Schedule 40 and Schedule 80 PVC pipe?
A. The main difference is the wall thickness.  The outside diameter is the same on both the schedule 40 & 80, so they will fit the same fittings.  The schedule 40 pipe has a thinner wall and should not be threaded.  The schedule 80 pipe can be threaded, and both threaded and scoket  fititngs are available for it.
Title: Schedule 40 pipe vs. Schedule 80 pipe
Description: Knowing the difference between PVC pipe.
Published: 5/16/2003
Last Edited: 9/19/2013
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