Working principle of spin ball valve

     The rotary ball valve has the functions and advantages of butterfly valve, half ball valve, gate valve and stop valve at the same time. It can not only cut off reliably under positive pressure, but also reliably seal when reverse pressure or reverse pressure is much greater than forward pressure. .

     The seal of the spin ball valve adopts the structure and principle of the semi-ball valve, and the shape adopts the butterfly structure, which has the characteristics of small size and light weight; and has the performance of two-way hard seal, small sealing friction, durability, and light opening and closing. Therefore, the cost performance is far Higher than the hemispherical valve, it is widely used in water pump outlets, pipe network systems, water recovery systems, high-level water tanks, floodable sewage systems, anti-backflow systems and other occasions that require two-way sealing. It can be used in metallurgy, mining, petrochemical, and chemical industries. , Electric power, environmental protection, municipal administration and other industries as pipeline opening and closing and adjustment. One spin ball valve is equivalent to two ordinary one-way sealed valves.

The working principle of the spin ball valve:

     The sealing surface of the valve core is a cubic curved surface, and the sealing surface of the valve seat is a conical surface. At the sealing point, the valve seat surface is actually a tangent surface of the third curved surface of the valve core, so its combination is perfect. There are adaptive (automatic center positioning coincidence) and wear compensation functions. Because the center of rotation deviates from the geometric center of the spool, there is the actual effect of the spool entity continuously retreating and shrinking when the spool is opened, and the spool entity continuously moving forward and expanding outward when the spool is closed. Its function is equivalent to a hemispherical valve. The combination of gate valve, globe valve and butterfly valve.