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    gas pressures (2 Posts)

  • aldevo aldevo @ 9:54 PM
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    gas pressures

    Gas valves are usually rated for 1/2 psi max. Why is it trouble often when natural gas is approx. 10" or higher, but hardly ever a problem when lp is approx. 13" w.c.?
    This post was edited by an admin on February 27, 2013 10:08 PM.
  • VictoriaEnergy VictoriaEnergy @ 10:55 PM
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    nat vs lpg pressures

    7" WC is approx 1/4 PSI, I think they make the valves so they can tolerate a lock-up pressure from an upstream regulator of twice the normal working pressure.

    I think higher lpg pressures in combination with smaller burner orifices were originally intended to help the venturi effect for an acceptable air/fuel mix on start-up of atmospheric burners.

    Not sure what problem you are referring to...
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