Blind valves are an important type of valve, mainly used to cut off gas media. The following is popular science information about blind valves, including its definition, working principle, structure, characteristics, application range and market size.

1. Define
Blind valve is a gate valve that cuts off gas media by hand, electric or gas or hydraulic. It is mainly divided into electric blind valve, hydraulic blind valve, pneumatic blind valve, closed plug valve, electric open blind valve and other types.

2. Working Principle
The working principle of the blind valve involves three main driving devices: two manual clamping or loosening devices and an electric device. When opening or closing the gate, first loosen the two manual devices, and then start the electric device to achieve the purpose of opening or closing the gate. After the gate is opened or closed, the two manual devices are clamped to ensure the safe operation of the pipeline.

3. Structures
The blind plate valve is mainly composed of left and right valve bodies, telescopic mechanism, fan-shaped valve plate, electric push rod I for driving the valve plate, and electric push rod II for clamping and releasing. The action of electric push rod II disengages the sealing pair, and then the action of electric push rod I causes the fan-shaped valve plate to change from open to closed. After closing, electric push rod II moves in the opposite direction, the sealing pair is clamped, and the valve closing is completed. The opening valve is the opposite.

4. Specificities
01. Reasonable design, small size, light weight, easy to install and maintain.
02. Compact structure, good sealing performance, can effectively prevent gas leakage.
03. Easy to operate, can be manually or electrically controlled to achieve fast opening and closing.
04. Wide range of applications, can be used for cutting off and controlling various gas media.

5. Scope Of Application

Blind plate valves are widely used in industrial production, mainly for isolation, sealing and flow regulation of pipeline systems. Specific application scenarios include:

01. Pipeline maintenance: Blind plate valves can be used to isolate pipeline systems, facilitate maintenance, cleaning and other work, and reduce downtime and costs.
02. Safety protection: When connecting multiple devices in a pipeline system, blind plate valves can be used to isolate different parts and provide safety protection to avoid fluid mixing or cross infection.
03. Flow regulation: Blind plate valves can adjust the flow size as needed, and quickly isolate and restore the fluid in the pipeline system.
04. Environmental protection: In scenarios such as dangerous goods transportation, short-distance transportation, and explosion-hazardous areas, blind plate valves can effectively control fluid outflow  and protect environmental safety.

6. Market Size
The blind plate valve market is showing a growth trend worldwide. According to industry research and analysis reports, the market size of blind plate valves will continue to expand in the next few years, especially in the Asia-Pacific and European markets. With the continuous development of industrial production, the application field of blind plate valves will be further expanded, and the market prospects are broad.