@Nutman posted:Thanks Bruce and Les......., good to know. I watched the video, and the venting upon fill I think is a good thing and prevents overfilling.
I have heard overfilling can be dangerous (fire hazard), especially on the larger cylinders on our rigs cuz it may force liquid propane instead of propane gas vapor into lines and appliances. If true, I would assume overfilling a 1# cylinder might result in a similar situation of the risk of liquid propane entering a portable appliance.
My understanding is that the even bigger risk of overfilling the disposables is that they can bulge the sidewalls and once weakened can go kablooey.
Say you overfill them in Death Valley and then take them up to your campsite in Colorado @ 10,000' the expansion has nowhere to vent.