Underground copper lp gas line splice?

[D KRAGER]

Ok have to run a gas line to my 500 gl tank this weekend (if the rain would ever stop). Been running on 100# bottles, get sick of dragging them to work to fill. I came across some copper when cleaning out my buddies shed that will work, but I'm about 15' short. What's the correct way to make a splice underground on flex copper?

 

[D KRAGER]

Yep nevermind, went ahead and bought new 3/8 copper to do the whole run. No underground splices. It was only an extra $25. Told myself to quit being a tight ***.

Job done, digging by hand *****, just fired up the furnace, ready for cold weather now!!!

 

[nate379]

A flare or compression fitting would have worked. I don't know for sure that is to "code" though, but I don't see why it wouldn't be.

 

[matt60j]

A flare is the proper way. I don't think compression fittings are allowed for propane. -MATT

 

[chevelle67]

Matt`s right a compression fitting on an LP line is generally frowned upon, especially with annealed tube. Flares are ok but i would braze it if a connection was needed.

 

[walrus]

Flare and you have to use frost nuts not regular nuts

 

[HoosierBuddy]

Good job just getting a new piece.

Cost you maybe $20 more than installing flare connector?

Might have saved you the cost of a full tank of propane leaking out. Money well spent.

Phil

 

[russlaferrera]

Flare and you have to use frost nuts not regular nuts

" What are "Frost Nuts?"

 

[rasit]

Double-flare is the way it's done. Same as a hydraulic brake line.

 

[walrus]

" What are "Frost Nuts?"

I've always heard them called frost nuts but what I found via google is forged nuts, here's an example
http://www.hardwareandtools.com/invt/8920076

Much thicker, much stronger than a regular nut

 

[D KRAGER]

I've always heard them called frost nuts but what I found via google is forged nuts, here's an example
http://www.hardwareandtools.com/invt/8920076

Much thicker, much stronger than a regular nut

Those are the ones I always use on gas fittings anyways. I was told the other ones are not designed for gas.

 

[CorporateOffRoader]

The guy that plumbed my heater yesterday ran a 1/2" copper tube to the black pipe on my shed. Said it was under 100' and 1/2 would work fine, but also made the comment that here in WI, no splices underground.

 

[5wndwcpe]

" What are "Frost Nuts?"

That's what he gets if he doesn't get the heater working.