Professional Industrial Valves Manufacturer

What is the difference between ball valve and butterfly valve?

by:Mech     2020-07-16
Ball valve and butterfly valve are more commonly used valve. Some situations can be universal, and some conditions can only use one of them.

ball valve and butterfly valve is the difference between the two butterfly Industrial Valves opening and closing is a piece of board, and the ball is a ball, butterfly valve plate and ball valve core are around its axis of rotation movement; Gate valve plate is along the axis of lifting movement; Butterfly valve and gate valve can adjust the flow rate through the opening; Ball valve is not easy to do this.

butterfly valve is characteristic of opening and closing fast, simple structure, low cost, but the rigor and confined ability is bad. The characteristics of the ball valve and gate valve are similar, however, limited by size and the opening and closing resistance, it's hard to do big caliber.

the structure principle of butterfly valve is especially suitable for production of large diameter butterfly valve butterfly plate installed on the diameter of the pipe direction. In butterfly valve body, a cylindrical channel disc disc around the axis of rotation, rotation Angle for 0 & deg; ~90° Between, rotate to 90 & deg; When the valve is fully open. Its simple structure, low cost, adjustable scope is bigger. Ball valve usually applies to the class without pellet impurity of the liquid, gas, fluid pressure loss is small, sealed performance is good, high cost. In comparison, the ball valve sealing butterfly valve is better than others. seal is to rely on the seat extrusion on the sphere for a long time, it is half a ball valve must wear fast, ball valve sealing usually adopt flexible material, emergency cut-off valve is difficult to use in high temperature and high pressure pipeline. Butterfly valve seal is rubber for mediation, it is half a ball valve, ball valve, gate Industrial Valves, metal hard seal performance. After half a ball valve use for a long time, the seat trace wear, also can produce it may continue to use by adjusting, stem and packing in the process of opening and closing the valve stem just rotate it 90 & deg; , when there were signs of leakage, pressure packing gland bolts touch again, packing can be realized without leakage, and the other is still the small leak valve force, big leaks in the valve.

ball valves in the process of opening and closing is the enclasp force on both ends of the valve seat under operation, it is half a ball valve opening and closing torque, the greater the nominal diameter of open-close torque, the more obvious difference, the opening and closing of butterfly valve is to overcome the deformation of the rubber, torque is bigger. The gate valve, globe Industrial Valves operating time is long and arduous.

ball valve and plug valve is belong to one type of valve, only its closure is a ball, the ball around the center line of the body as a rotation to achieve a kind of open and close the valve. Ball valve in the line is mainly used for cutting, distribution, and change the flow direction of medium.


Nowadays, the adoption of flanged gate valve in cast iron gate valve industry is quite common.
Exceed customers' expectations in the procedures of manufacturing double flanged gate valve.
Utilizing high technology to manufacture products can afford a fully experience to customers by using wedge valve.
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