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 Pipe diameter
Author: Bagge (PA)

I am looking to install an automatic shut off valve on my main water line. Looking at it I am not so sure it is 3/4 inches. The house was built in the 1950's. I was going to use the pro-line push-fittings.

Before I cut the pipe I'd like to make sure I can finish the install. It's certainly larger than a 1/2 inch pipe. It just does not look at big as newer 3/4 inch pipes I have installed elsewhere

Is there a chance that this pipe could be slightly smaller, was there a difference in pipe thicknesses back in the day?


Edited 1 times.

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 Re: Pipe diameter
Author: steve (CA)

What material is the pipe? Copper or galvanized steel?

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 Re: Pipe diameter
Author: Bagge (PA)

Copper under all the dirt I sanded off :)

I did a few more comparisons and it has the same circumference as the newer 3/4 inch pipes I installed so perhaps it's just me.

Just wanted to make absolutely certain.

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 Re: Pipe diameter
Author: steve (CA)

All ¾" copper OD is the same.

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 Re: Pipe diameter
Author: steve_g (CA)

Except for reefer tube - it's 3/4" OD.

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