Pneumatic Cut-off Gate Valve Characteristics And Type Selection

Pneumatic cut-off gate valve is a kind of valve that uses air pressure as a power source to drive the spool to do lifting movement on the seat, so as to realize the rapid cutting or closing of the fluid in the pipeline. It is a kind of automatic control valve, which can automatically adjust the opening of the valve according to the change of the signal to achieve the purpose of controlling the flow rate, pressure and temperature of the fluid.

Pneumatic cut-off gate valve has the following characteristics:

1. Simple structure, easy operation, low maintenance cost.

2. Responsive, quick action, large closing torque.

3. Reliable sealing, small leakage, long life.

These characteristics make the pneumatic cut-off gate valve widely used in the industrial field. They are often used in petroleum, chemical, metallurgical and other industries to control the flow of gas, combustion-supporting air, cold air, flue gas and other media. According to the characteristics of the medium and process requirements, different structural types and materials of pneumatic cut-off gate valves can be selected.

Common structure types include:

1. Single-seat type: simple structure, large circulation capacity, but unbalanced force. Suitable for small and medium diameter and low differential pressure occasions.

2. Sleeve type: complex structure, small circulation capacity, but balanced force. Suitable for large diameter and high differential pressure occasions.

3. Three-way type: Special structure, can achieve the function of shunt or confluence. Suitable for multi-channel fluid control.

In short, pneumatic cut-off gate valves play a key role in industrial processes, helping to achieve fluid control and automated regulation.