propane tank purging

no

Just a brand new tank before the first fill.

downtheroad wrote:
Just a brand new tank before the first fill.

x2, unless it has been opened to the atmosphere.

Before first fill is all that is needed.

Propane cylinders are typically shipped with air
That air needs to be purged.....air mixed with propane will cause popping noises/regulator issues etc.

Purging can be done using:
Propane Vapor (purge kit with supply cylinder and purge valve) Vapor is transferred 4-5 times in and bled off to remove air. Then cylinder can be filled with liquid propane
Vacuum Method where a vacuum is pulled on cylinder and then propane vapor is transferred in and then liquid propane can be pumped in.


Should NOT need purging again UNLESS
Service valve is replaced.....air in cylinder

To the best of my knowledge. There is no need to purge unless the tank ran dry and the valve was left open so air could get in.

F450 wrote:
I was reading in the FMCA magazine that it should be done once in awhile.

What was the purpose of it or what are they trying to purge out of the tank?

No, mines never been purged.

Bill

My doctor requires me to purge occasionally but not my propane tanks.

I just took my cylinders in to refilled and the attendant started to purge them. When I asked why he told me you get more propane in the cylinder. That made no sense since the propane is liquid and any air would be forced out of the vent hole. I insisted he stop. I do know that scuba tanks should never be run to zero pressure because atmospheric air can get in and cause corrosion issues and I assume that holds true for propane cylinders as well.
RichH

I guess mine gets purged every time it runs out of fuel.

Sounds like revenue enhancement. Yes, for a new tank. No for a tank run empty. Been there and done that many, many times. Left open to the air, I have no clue. After replacing the valve, I have no clue. Maybe I should ask my local propane company.