Difference between track ball valves and pipeline ball valves
Thread Content
What is the difference between track ball valves and line ball valves? Does anyone have animations showing these two types of ball valves? Please explain it in detail
The orbital ball valve is the simplest; remember just one thing: it combines all the advantages of gate valves and ball valves, while eliminating their respective disadvantages! It has excellent sealing properties and can be used in pipelines where leaks are not allowed (such as for hydrogen). It can reach ASME Class 6, that is, bubble-level sealing. Found the 3D animation given by the senior in Haichuan. . . . http://bbs.hcbbs.com/thread-989003-1-1.html
Leave an email address and I’ll send you a video showing the dynamics of the ball valve
Pipeline ball valve seems to be another name for “fully welded ball valve”.
I’ve reviewed the manufacturer’s technical documents; in track ball valves, there is a spiral groove on their lifting rod. When the valve handle is turned, the sealing sphere moves upward first before it rotates, which prevents friction with the valve body and thus avoids the generation of sparks. Ordinary pipe ball valves, on the other hand, rotate directly, resulting in severe wear
Are you asking whether ball valves for pipelines meet the API 6D valve specifications? What I can tell you is that some manufacturers are able to meet the requirements, while others do not have API6D certification.
A track ball valve features a track groove on the upper part of the valve stem, with pins moving within this track. The bottom of the valve stem is designed at a specific angle, which enables the ball to move away from the valve seat and rotate, or it can cause the ball to rotate and force it against the valve seat, resulting in excellent sealing performance. A ball valve is a type of pipeline valve; its opening and closing are controlled by an actuator, which causes it to rotate 90 degrees.
Ball valves with track mechanisms reduce wear on the sealing surfaces; when opening the valve, it first separates from the seat before being rotated to open, and the same process applies when closing it. Most manufacturers produce ball valves with track mechanisms that are more showy than functional (nothing but a gimmick)