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Frequently Asked Questions - Pipe

I need to connect several pieces of 4" pipe with different outside diameters, some of which are non-standard. What is the best kind of coupling to use?

I need to purchase a repair clamp but I am not sure what size pipe I have. How can I figure out what my Outside Diameter is?

I have a small leak in my pipe. Can I repair it or do I have to replace the pipe?

Do I have to use a tapping machine to tap into PVC pipe?

I was looking at the Service Saddles and noticed that some of them have an “NPT” tap and some have a “CC” tap. What is the difference?

I work with different types of pipe material and sometimes need to make repairs or replace sections of the pipe. Can USABlueBook help me?

I need an Expansion Joint for my piping system. What is the difference between open arch and filled arch?