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Category: Process Control
Question: How does a pressure regulator work?
Keywords: pressure,regulator,diaphragm,operation,operating,principle
Answer: A typical pressure regulator that is normally installed in compressed air/gas systems uses the downstream gas pressure to balance the force exerted by a spring that causes the valve portion of the device to open and close. The downstream pressure acts on a diaphragm which is attached to the valve stem & spring. Rising downstream pressure exerts force on the diaphragm (Force = press X area) which overcomes the spring force and closes the valve. Pre-tensioning the spring determines the force opening the valve and when the downstream press exerts equal force on the spring the valve is in equilibrium (balanced). Any change in downstream pressure causes the valve to open or close accordingly, until equilibrium is again reached. Downstream pressure is adjusted by adjusting spring tension.Source: Cheresources Message Board
Links: Pressure Regulators



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