Characterized ball valves provide enhanced flow control along with several additional advantages compared to globe valves. Globe valves have long been the standard for many commercial and industrial ...

Common noncompensated valves are adjustable needle valves; flow through them varies with fluid viscosity and pressure across the valve. Usually, a needle valve is paired with a check valve that ...

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August 2021 Choked Flow in Control Valves Choked Flow in Control Valves By Katherine Bartels, Adam Harmon Summary Choked flow in control valves is a subject of serious concern for industrial users.

F low control valves control the movement or pressure of fluid. A valve is basically a mechanical device that blocks a tube or pipe either partially or completely to change the amount of fluid that ...

This controller actuates the valve to make the pressure reach at the desired point by increasing or reducing the size of the orifice. To get the right electronic air pressure regulator, it’s necessary ...

In petroleum refineries, for example, on/off valves are used in several different systems, including crude distillation, hydrocrackers and hydrotreaters, catalytic crackers and hydrogen generation. In ...

Note that the difference between the boiler feed pump head-flow curve and the system resistance curve (Figure 1) provides the basis for the pressure drop available for the drum level control valve.

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 ...

FlowCon monitors the temperature of each cooling circuit, and then regulates the flow of cooling water by opening and closing an electromagnetic solenoid valve. The controller allows a maximum ...