SUMMARY <br> <br> shut-off valve is an automatic shut-off valve actuator system, a multi-spring actuator or a pneumatic diaphragm actuator and the floating piston control valve composed of a reception signal control instrument controls the fluid process piping Switch off, on or switch. It has the characteristics of simple structure, responsiveness and reliable operation. Can be widely used in petroleum, chemical, metallurgical and other industrial production sectors. The air supply to the pneumatic shut-off valve requires filtered compressed air. The medium flowing through the valve body should be liquid and gas free of impurities and particles. Single seat, sleeve, and three-way shut-off valves are available depending on the allowable differential pressure, media characteristics, and process piping requirements.
The shut-off valve application is mainly used in the following situations:
1. It is connected with the flammable gas leakage monitoring instrument. When the instrument detects the leakage of flammable gas, it automatically closes the main air supply valve quickly, cuts off the supply of gas, and timely stops the occurrence of a vicious accident.
2. It is connected with the limit temperature pressure safety controller of the thermal equipment. When the temperature pressure of the detection point in the equipment exceeds the set limit value, the gas supply valve is automatically closed quickly to stop the supply of fuel.
3. It is connected with the central fire alarm system of the high-rise building. When a fire occurs in the building, the gas supply in the building is automatically cut off to prevent the gas explosion.
4. Set the ZCR gas emergency shut-off valve in the gas supply pipe network of the city or factory, which can be centrally controlled in the central control room, and the remote control emergency shuts off the pipeline supply at the accident site.
The shut-off valve application is mainly used in the following situations:
1. It is connected with the flammable gas leakage monitoring instrument. When the instrument detects the leakage of flammable gas, it automatically closes the main air supply valve quickly, cuts off the supply of gas, and timely stops the occurrence of a vicious accident.
2. It is connected with the limit temperature pressure safety controller of the thermal equipment. When the temperature pressure of the detection point in the equipment exceeds the set limit value, the gas supply valve is automatically closed quickly to stop the supply of fuel.
3. It is connected with the central fire alarm system of the high-rise building. When a fire occurs in the building, the gas supply in the building is automatically cut off to prevent the gas explosion.
4. Set the ZCR gas emergency shut-off valve in the gas supply pipe network of the city or factory, which can be centrally controlled in the central control room, and the remote control emergency shuts off the pipeline supply at the accident site.
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