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    glennmsmith58's Avatar
    glennmsmith58 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jan 20, 2007, 03:38 PM
    Pressure testing gas line
    I am installing a new LP gas line into my basement. I have the line run and have a pressure tester connected to the line. I am getting conflicting info on the pressure and time I need to test to. I found an old thread (Aug 2005) on this forum that said 10 psi for 15 minutes. I also found a City of Berkeley document that said the same thing.

    I have 2 friends that works doing HVAC installations for separate companies. One tells me 60 psi for an hour, the other tells me 40 psi. My gauge only goes to 20 psi. I tested it at 28 psi for an hour and had less than 1/4 psi drop. Overnight, it dropped about 2 psi.

    Do I have a problem? I have tested all connections with soapy water and see no bubble.


    Thanks,

    Glenn
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jan 20, 2007, 04:06 PM
    Sounds like you're good to go. Good luck, Tom
    glennmsmith58's Avatar
    glennmsmith58 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Jan 20, 2007, 06:32 PM
    After all day, about 24 hours now, it is now down to 22 psi from 28. Is this a concern? Should it hold forever at 10 psi?
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
    Ultra Member
    		  
    #4

    Jan 20, 2007, 10:38 PM
    An LP gas leak is a dangerous thing especially in a basement. Natural gas is lighter that air and if you have a leak it will seek a way out through the house and maybe never build up to explosion levels. LP gas is heaver than air and will migrate to the lowest places in the house or basement just like water will and it will remain there until disturbed by a draft. So a small amount each day will make a lot over a long period or time.
    Not only check the joints but check all over the fittings and check the gage all over.
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