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.

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; ...

"You don't get to beat Tesla every day." Now, one-way pipes have been attempted before. More than 100 years ago, Nikola Tesla patented the Tesla valve, a one-way fluid flow device with no moving ...