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Gauges going bad

realolman
realolman Member Posts: 513
in THE MAIN WALL
I meant that it was a 3-1/2" pipe.

The pressure on it is 18 OSI

Comments

  • realolman
    realolman Member Posts: 513
    gauges going bad natural gas train

    In the past 2 weeks I have replaced the gauges marked with an x in the attatchment 3 times. the last time,this morning, I upsized them from a 0 to 30 osi to a 0- 60 osi.
    I just looked at them about an hour ago after 4 hr service and see that the 0- 60 are reading about 5 osi when there is 0 osi. The one in the middle does not pop.

    If the picture looks crappy click on it... it'll look a little better.

    What could be causing this... or more to the point... what can I do to get it to stop... We couldn't find liquid filled in 0-30 osi... I don't know about 0-60
  • Lyle from Lisle (HVACMD)
    Lyle from Lisle (HVACMD) Member Posts: 3


    As I am sure you are already aware,gas pressure,residential 4inches water column,commercial 12 inches and higher,creates an unusual strain on very sensitive gauges,I recommend using a diagnostic magnehelic or digital sensor.These service level instruments are more robust.May I ask why you are continuosly monitoring your gas pressure?Are you concerned about input,demand,or distribution?Lyle from Lisle(HVACMD)
  • bob_46
    bob_46 Member Posts: 813
    Lyle

    I thought heat engineering was in Hinsdale?

    There was an error rendering this rich post.

  • bob_46
    bob_46 Member Posts: 813
    pressure

    Are you sure you have all of your units of measure correct? You show 3 1/2" after the double block gas valve, I assume that's water column? 60 osi = 3.75psi , 3 1/2" = 2osi. I would remove the first gauge after the main valve and replace it with a tatle-tail gauge of around 5psi and see what the max pressure is. You don't show the reg if there is one ahead of the main valves. You may have a main reg that is not locking up and allowing street pressure to hit the gauges. Test don't guess.

    There was an error rendering this rich post.

  • realolman
    realolman Member Posts: 513
    I guess

    there is no real reason to have the gauges on line all the time. I thought about putting valves on them. That may be what I have to do.

    It is an industrial facility.

    There are two regulators ahead of the main valves that drop the pressure down to 18 OSI. I can't see why two gauges pop, but the one in between them does not.
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