Choked vapor flow conditions are very common in relief valves and control valves with very high flows, but can also occur in high velocity flare headers at piping transitions. Choked flow is also ...

Restrictive flow regulators work like an automatic variable orifice to control flow by throttling or restricting. Compensator spool movement blocks fluid flow through the valve.

Applications. In-line pressure-compensated flow control valve. Source: Parker Hannifin (Click image to enlarge) Pressure-compensated flow control valves are useful in a variety of hydraulic ...

Valve rangeability is often stated as simply a deviation of the catalog flow characteristic from the theoretical characteristic. Here we will see how the consideration of the changes in process ...

Figure 3. Typical inherent control valve flow characteristics. Figure 4. Installed control valve characteristic for a 0.5 vpdd. The three control valve characteristics are: Linear; Modified parabolic; ...

In this method, attributed to F.C. Yu, the control valve in a pumped application is assigned a minimum pressure drop at maximum design flow rate and maximum 80% control valve open position ...

Greg: I was impressed by Robert's detailed analysis of how to identify and use the installed characteristic that included considerable knowledge about fluid flow and the piping system installation ...

Low flow control valves are essential for regulating fluid flow in various industrial processes, such as chemical, pharmaceutical, food and beverage, and water treatment. However, they also pose ...

1. Flow-to-open cutaway. Control valves equipped with noise-abatement trim, such as a drilled-hole cage or a tortuous path stack, are typically oriented in the flow-to-open direction.

The 106-PFC/206-PFC pressure modulation valve is a pressure-reducing valve with a special patented pilot that increases downstream pressure as flow increases. The PFC valve alters and controls ...

Choked vapor flow conditions are very common in relief valves and control valves with very high flows, but can also occur in high velocity flare headers at piping transitions. Choked flow is also ...