Gate valves and butterfly valves are two common types of valves, their main differences are reflected in the structure, working principle, applications and their characteristics.

1. structure

The structure of the gate valve is relatively simple, mainly composed of valve body, valve seat, gate (opening and closing parts) and sealing structure. The valve plate in the valve body is parallel to the state, through the lifting of the switch operation. The structure of the butterfly valve includes the valve body, butterfly plate (disc), sealing ring and other parts, the disc-shaped disc, rotating around the axis to switch operation.

2. working principle

The working principle of the gate valve is mainly through the lifting movement of the valve plate to open or close the fluid channel. It is characterized by small flow resistance and unlimited medium flow direction. The working principle of the butterfly valve is to change the cross-sectional size of the fluid channel through the rotation of the butterfly plate to achieve the purpose of controlling the flow.

3. applications

Gate valves are usually suitable for occasions that require frequent switching, and occasions that require full opening or full closing of the fluid. Because of its small flow resistance, it is usually used for the starting or ending position of the pipeline system. Butterfly valves are mostly used in low-pressure piping systems, especially for occasions where the parameters of the fluid medium are adjusted, such as ventilation and dust piping systems.

4. characteristic difference

The gate valve has good sealing performance and can maintain a stable sealing effect even under high pressure. In addition, the gate valve has relatively good regulation performance and is suitable for a variety of media and temperature environments. Butterfly valve because of its simple structure, small size, light weight and other characteristics, usually used in low pressure pipeline system. In addition, the opening and closing speed of the butterfly valve is relatively fast, which is suitable for occasions that require rapid adjustment.

To sum up, there are obvious differences in the structure, working principle, application and characteristics of gate valves and butterfly valves. The choice of valve type depends on the specific application requirements and engineering conditions. In practical applications, the fluid pressure, temperature, medium characteristics and the required adjustment performance should be fully considered to select the appropriate valve type.