Can the old LP tank valves be replaced?

[tinknal]

I have a couple of old 30 LB tanks I would love to keep. Can I replace the old style valves with the new ones or are they now just junk?

[SquashNut]

I think they sell them where i get my propane. If I recall, the worker their installed them for us, before he filled the tanks once.

[crispin]

Yes they can be changed easily.

[tinknal]

Cool beans!

[pancho]

It is easy to do it yourself.

[Nica]

I buy old 20 lb tanks at auctions and trade them in for a modern and full tank at the tank exchange places. No problem yet exchanging them and gets you upgraded pretty easy and cheap.

[beachcomber]

there is a small tube that sticks down that comes out of the bottom of the valve that needs to be the same length as the valve that you take out

[Bearfootfarm]

They can be changed but the new valves cost almost as much as a whole new tank

[oregon woodsmok]

Here, there is a date stamped on the tank and the propane company isn't supposed to fill the tank after it is 10 years old. The purpose of that law, I have no idea.

[TnAndy]

Originally Posted by oregon woodsmok

The purpose of that law, I have no idea.

You have to be in the business of manufacturing tanks to fully understand it......

[ryanthomas]

Originally Posted by oregon woodsmok

Here, there is a date stamped on the tank and the propane company isn't supposed to fill the tank after it is 10 years old. The purpose of that law, I have no idea.

They are somewhat high pressure, I think around 200 PSI. Filling and emptying a steel tank at such pressure stresses it, potentially weakening it a little each time. The same is true of welding gas tanks (those are much higher pressure though) and air compressor tanks.

[beachcomber]

propane tanks can be re certified ,just a visual inspection. i have several 100#ers that are galvanized and are 40+ years old. new valves cost less than 25 bucks

[Cyngbaeld]

When I lived in CO the guy driving the propane truck would fill anything that would hold propane that he could get the nozzle to screw on. He didn't care how old it was, he just liked to make his trip really count. We'd have him fill the big yard tank and then all the empty smaller bottles would be filled too.