Oil field operators can use several practical equations for calculating flow rates of natural gas through venturi gas-lift valves. For critical flow, this analysis derived such equations from a ...

In recent years, much discussion has centered on C v ratings (also known as capacity coefficients or flow factors) and whether or not American, European, and Japanese pneumatic-valve manufacturers ...

I am disappointed every time I see the flow coefficient C v used to size a valve without consideration given to the other components in a pneumatic circuit. In the old days, a focus on the valve alone ...