WHAT IS A PNEUMATIC THREE-WAY BALL VALVE

What is a pneumatic three-way ball valve? What are the structural characteristics and advantages of pneumatic three-way ball valves? Are pneumatic three-way ball valves often encountered in people's lives? What is the working principle of our pneumatic three-way ball valves? Do you know the answers to these questions? Let's find it in the article.

 

Advantages of pneumatic three-way ball valve

Pneumatic three-way flanged ball valves are usually equipped with various accessories, such as solenoid valves, limit switches, positioners, etc., to achieve local control and remote centralized control. The valve can be controlled in the control room without going On-site or high-altitude and dangerous manual control greatly saves manpower, time and safety.

 

Structural characteristics of pneumatic three-way ball valve

1. Top-mounted structure: the valve installed on the pipeline can be directly inspected and repaired online, which can effectively reduce the stopping of the device and reduce the cost. This type of valve should generally be installed horizontally in the pipeline.

2. Open and close frictionless: completely solve the problem that the traditional valve affects the seal due to the friction between the sealing surfaces.

3. Low torque design: The valve stem with special structure design can be easily opened and closed with only a small handle.

4. Wedge-shaped sealing structure: The valve is sealed by the mechanical force provided by the valve stem, pressing the ball wedge onto the valve seat, so that the sealing performance of the valve is not affected by the change of pipeline pressure difference, and the sealing performance is under various working conditions There is a reliable guarantee.

5. Single valve seat design: eliminates the problem that the medium in the valve cavity affects safety due to abnormal pressure increase.

6. Self-cleaning structure of the sealing surface: when the ball is tilted away from the valve seat, the fluid in the pipeline passes through the 360 ° uniformly along the sealing surface of the ball, which not only eliminates the local erosion of the valve seat by the high-speed fluid, but also wash away the sealing surface The accumulation can achieve the purpose of self-cleaning.

 

 

Working principle of pneumatic three-way ball valve

1. Pneumatic three-way ball valve is a three-channel rotary ball valve, which is used for medium distribution, confluence and flow direction switching. Any pipe can be used as an inlet or an outlet. pneumatic three-way ball valves are divided into pneumatic three-way L-type ball valves and pneumatic three-way T-type ball valves, which can meet different production process requirements. The pneumatic three-way L-type ball valve is to cut off two of the three pipes, and the pneumatic three-way T-type ball valve realizes the merge and shunt of the three connected pipes.

2. Pneumatic three-way ball valve is matched with electric valve positioner, input 4 ～ 20mADC signal and 0.4 ～ 0.7MPa gas source to control operation, and realize adjustment of parameters such as pressure, flow, temperature, liquid level. It is also equipped with travel limit switch, solenoid valve, pressure reducing valve and 0.4-0.7MPa gas source to realize the switch operation, and sends two pairs of passive contact signals to indicate the switch of the valve.

 

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