What Are The Advantages Of Butterfly Valves Compared With Ball Valves And Gate Valves?

Compared with ball valves and gate valves, stainless steel lug butterfly valves have the following advantages
1. Simple structure, light weight
Butterfly valve: Its structure is relatively simple, usually composed of valve body, butterfly plate, valve stem and drive device and other components, the overall weight is light, easy to install and transport.
Ball valve: Although the structure is also more compact, but relative to the butterfly valve, its structure may be slightly complex, and the weight is usually greater than the same specification of the butterfly valve.
Gate valve: The structure of gate valve is relatively complex, especially its gate and seat parts, processing and assembly is difficult, and the overall weight is also heavy.
2. Flexible operation, quick opening and closing
Butterfly valve: Butterfly valve by rotating the butterfly plate to control the fluid on and off, flexible operation, fast opening and closing, especially suitable for frequent opening and closing occasions.
Ball valve: Ball valve through the rotation of the ball to achieve fluid on and off, its opening and closing speed is also faster, but relative to the butterfly valve, may be slightly inferior.
Gate valve: The opening and closing speed of gate valve is relatively slow, because its gate plate needs to be fully opened or closed to achieve fluid on and off, and the opening and closing process requires a large space.
3. Low fluid resistance
Butterfly valve: When the butterfly valve is fully opened, the butterfly plate is parallel to the fluid flow direction, and the fluid resistance is small, which is conducive to reducing the energy loss of the pipeline system.
Ball valve: When the ball valve is fully opened, the fluid channel is also smooth, but compared to the butterfly valve, the flow resistance may be slightly larger, especially when the valve is partially opened.
Gate valve: The flow resistance of the gate valve is also small, but its flow resistance performance is greatly affected by the opening of the gate, and the flow resistance will be significantly increased when the gate is partially opened.
4. Good sealing performance
Butterfly valve: The sealing performance of the butterfly valve is usually better, especially when the elastic seal or metal seal is used, a higher sealing grade can be achieved. However, it should be noted that the sealing performance of the butterfly valve is greatly affected by factors such as medium pressure, temperature and medium properties.
Ball valve: The sealing performance of the ball valve is also very good, and the sealing surface between the ball and the seat can be made of a variety of materials to adapt to different media and working conditions.
Gate valve: The sealing performance of gate valve is also better, but its sealing surface is susceptible to media erosion and corrosion, and it needs regular inspection and maintenance.
5. Wide range of application
Butterfly valve: The application range of butterfly valve is very wide, especially suitable for large diameter, low pressure difference, medium temperature is not high in the pipeline system. In addition, butterfly valves can also be used in mud and other media containing solid particles.
Ball valve: The application range of ball valve is also very wide, especially suitable for the need for rapid opening and closing, flow regulation and media cut-off occasions. At the same time, the ball valve is also suitable for corrosive media and high temperature and pressure environments.
Gate valves: Gate valves are usually used in situations where the fluid needs to be completely cut off, especially for large caliber, high pressure, high temperature or low temperature fluid control. However, gate valves are not suitable for frequent opening and closing.