Difference between V-type pneumatic ball valve and pneumatic control valve
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I would like to ask everyone: what is the difference between a V-type pneumatic ball valve and what is commonly referred to as a pneumatic control valve? The valve spool of a pneumatic control valve, as is commonly understood, should be something like that of a needle valve, right? So, is the control precision of pneumatic control valves higher than that of V-type pneumatic ball valves? I urge all experts and teachers to help me solve this problem!
There are too many types of control valves: single-seat, eccentric rotary, sleeve-type, and so on. You can look up some basic information to understand more about them. V-type ball valves are generally used as on/off shut-off valves and for interlock shutdown, either open or closed. It is rarely used to regulate flow.
Yes, the adjustment accuracy is indeed inferior to that of control valves. By adjusting the V-shaped orifice, a nearly equal percentage flow characteristic can be achieved.