Let you easily understand the components of the manual butterfly valve

Let you easily understand the components of the manual butterfly valve

The manual butterfly valve is a common valve for transporting liquids and gases in the pipeline, which can control the flow rate in the pipeline and keep the pressure of the fluid stable. The components include valve body, valve shaft, valve plate, sealing ring, actuating device, etc. The following is a detailed description of each section.

1. Valve body
The valve body is the most important part of the manual butterfly valve, which is responsible for connecting the two ends of the pipe and maintaining the flow in and out. The valve body is usually made of cast iron, stainless steel, carbon steel and other materials. The valve body can be a single structure, or can be divided into double jacket structure.

2. Valve shaft
The valve shaft is an important part of the valve plate and is made of stainless steel. The valve shaft connects the valve plate to the actuating device and controls the valve plate switch by rotating. The quality and process of the valve shaft will directly affect the performance and life of the manual butterfly valve.

3. Valve plate
The valve plate is one of the key components of the manual butterfly valve, and it is also the main part of the control fluid channel. The material of the valve plate includes carbon steel, stainless steel, etc. The valve plate and the valve shaft are combined as a whole, which can be rotated with the valve shaft to change the channel size of the valve body. The valve plate has a variety of forms such as single bias, double bias and three bias, which can be flexibly selected according to actual needs.

4. Sealing ring
The sealing ring is one of the essential parts of the manual butterfly valve, which is made of rubber, polytetrafluoroethylene (PTFE) and other materials, and is installed in the groove around the valve plate, usually used to prevent fluid leakage and contamination. The quality of the sealing ring directly affects the sealing performance of the manual butterfly valve, so it is necessary to choose a strong material, corrosion resistance, high temperature resistance, and durable sealing ring material.

5. Actuating device
The actuating device is an important part of the control of the manual butterfly valve switch, which mainly includes handles, gears, motors, pneumatic components and so on. There are two kinds of actuating devices of manual butterfly valve, one is manual device, which needs manual rotation when in use; The other is electric and pneumatic devices, which are more convenient to use and more suitable for automated control systems.

The components of the manual butterfly valve are important, and only the technical standards of the components, the scientific selection of materials and the coordination of each other can ensure the quality and efficiency of the valve. The user should fully understand the construction principle of the manual butterfly valve to maintain and maintain the manual butterfly valve and ensure its stable and efficient operation.