Orifice Plate - HLG

HLG SERIES self-control whole set throttling devices are widely applied in industries sectors

such as metallurgy, power, chemical, pharmacy, food, military, scientific research, etc. They are used

to measure, control and adjust flow of the fluids (liquid, gas and vapors). The throttling devices are

with the advantages of simple structure, easy maintenance, reliable performance and high measuring

accuracy.

When the fluid filled in the pipe is flowing through the throttling device in the pipe, the flow will

shrink partly at the throttling device, hence the flow velocity increases while the static pressure

decreases to form the differential pressure at the back and forth of the throttling device. The bigger

the flow rate, the larger the differential pressure, so we can measure the flow according to differential

pressure. This measuring method is based on Fluxion Continuity Equation (Mass Conservation Law)

and Bernoulli’s Principle (Energy Conservation Law). The differential pressure is related to flow, as

well as other factors. For example, when the forms of throttling devices or physical properties (density,

viscosity) of the fluids in the pipe are different, the differential pressure generates at the same flow rate

is different.