1. Straight-through flow valves, such as rotary-shaft ball valves , are typically high-recovery valves. 2. Rotary control valves, butterfly valve and ball valves are good examples. 3. At the bottom of the TDU is a large ball valve . 4. Daniel Ball Valve and Orbit Valve International were acquired into Cooper Cameron Valves. 5. Butterfly, ball valves , and plug valves are often quarter-turn valves. 6. "Three-way ball valves " come with a T-or L-shaped fluid passageways inside the rotor. 7. Another design aspect is the ball valve seat which is critical for performance stability. 8. This effect is more dramatic in caged-ball valves than in tilting-disc and bileaflet valves. 9. The ball in ball valves rotates within plastic seats. 10. Typically, caged-ball valves have a low amount of regurgitation as there is very little leakage.
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