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gas pressures

aldevo
aldevo Member Posts: 1
in THE MAIN WALL
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.?

Comments

  • VictoriaEnergy
    VictoriaEnergy Member Posts: 126
    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...

    There was an error rendering this rich post.

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