Noncompensated flow controls are simple valves that meter flow by restricting or throttling. ... a needle valve is paired with a check valve that offers resistance to flow in one direction only.

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 ...

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; ...

A partly open control valve will certainly create a complicated flow pattern. Cullen Langford P.E., Member, ASME Main Flow Committee / [email protected] A : The reason you should not place an orifice ...

(Page 1) Many engineers may wonder if it is possible to have flashing liquid flow in a control valve even if flow is not choked. The short answer is yes, but it is not very common. This article ...

Changing the flow direction of a pipeline is not a simple matter of reversing a few valves. A pipeline designed to flow in one direction needs complex restructuring in order to flow in another. It’s ...

This paper presents a unified theory for different measurement concepts of a thermal flow sensor. Based on this theory, a new flow sensor concept is derived. The concept allows measuring both ...