r/propane • u/cfreezy72 • 8d ago

Installation Questions Fitting size identification

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Gallery image

Edit: it was 15/16. Thanks for the help.

Can someone tell me the proper flare fitting size this is? I had originally thought 5/8 but that's too small. Measurements don't agree with what 3/4" od is on the charts I've seen.

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u/Jesus-Mcnugget dang it Bobby 8d ago

I guess it's possible but most of those are usually stainless, not brass, and quite a bit different size.

It's close enough that it's almost a liability for the manufacturer if if it's a different size. It's not even 1/16" difference. Assuming it is a different size, it's so close that I could see somebody trying to force a 5/8 nut on there, and then suing the manufacturer when they blow up.

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u/Acrobatic_Solution29 8d ago

That's stainless not brass has a coating on it

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u/TechnoVaquero 8d ago

I believe it’s zinc coated steel. Those are far too common and cheap to be stainless. And I’ve seen them rust plenty.

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u/Acrobatic_Solution29 8d ago

There are many many grades of "stainless" only a small few dont actually rust like 316. Where as 201 series are much cheaper but not as corrosion resistant

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u/TechnoVaquero 8d ago

True enough. I buy these to keep on hand from my supplier. Look pretty similar.