Propane/Gas Line pressure test
Hello,
Just found this forum, thanks all for creating! I have constructed an outdoor BBQ/Kitchen and I located a 100lb propane tank approx. 50 pipe feet from the point of use. I ran 1/2" black pipe with approx. 15 fittings. I pressure tested as per a plumbers advice with 15lbs of air for 15 minutes. It held the 15 lbs with no drop for about 4 hours. Some time later that evening I noticed that the pressure had dropped to zero. Seems like it should hold indefinitely but everything thing I've read and been told says 10 - 15 lbs for 15 minutes. What is the real story and what is safe? Thanks in advance for the input!
Craig