20lb Propane Tank Testing. I'm new to this and am a little perplexed. My speculation: If I buy a new, filled propane tank, connect it to my barbeque through a pressure gauge and find it (80%) full, it can't have been leaking. If I then turn the tank valve off leaving pressure in the lines and the pressure gauge remains constant indefinitely, then the barbeque delivery piping can't be leaking either. So why do I need to do a soap and water leak test?
Grilling - Char-Broil - Commercial Stainless Steel Grill
Answers & Comments
Mainly because LP is heavier than air. So instead of dissipating like natural gas into the atmosphere, LP tends to hang around and puddle up. That is why you always need to bubble test for leaks. On these newer tanks Mr Ralph Nader has been at work. New regulation shut down the gas internally if the gas goes out the bottle too fast. So it is best to have all valves closed and SLOWLY open the valve so you won't trip the safety device inside.
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