Where are pneumatic valves used?

Pneumatic valve is an automated control component that uses compressed air to drive the opening or closing of valves. It has a wide range of applications in many fields, and the following are some common usage scenarios:

Industrial production field

Chemical industry

In the chemical production process, pneumatic valves are used to control the transportation of various chemical raw materials. For example, in the production of synthetic ammonia, pneumatic valves are installed on the pipelines for transporting liquid ammonia. Liquid ammonia is a flammable, explosive, and toxic substance. Pneumatic valves can quickly and accurately cut off or open pipelines to prevent liquid ammonia leakage and ensure the safety of the production process.

For some chemical reaction vessels that require strict control of reaction conditions, pneumatic valves can accurately control the amount of reactants added and discharged. For example, in the polyester production process, controlling the mixing ratio of ethylene glycol and terephthalic acid, pneumatic valves can transport materials according to preset programs, precise flow rates, and time intervals.

Pharmaceutical industry

In the clean workshop of drug production, pneumatic valves are used to control the delivery and distribution of drug solutions. For example, in the production process of injection solutions, the liquid is transported from the mixing tank to the filling machine, and the pneumatic valve can ensure the sterile transportation of the liquid and avoid external contamination.

For some high-precision pharmaceutical equipment, such as freeze-drying machines, pneumatic valves can control the flow of refrigerant and drying gas to ensure that the temperature and pressure conditions of the drug during the freeze-drying process meet the requirements.

Food processing industry

In beverage production lines, pneumatic valves are used to control the filling of beverages. For example, in the production of carbonated beverages, pneumatic valves can accurately control the injection of carbon dioxide gas and syrup, ensuring the taste and quality of the beverage.

In the food packaging process, pneumatic valves can control the transportation of packaging materials and the supply of sealing gas. For example, in vacuum packaging machines, pneumatic valves can quickly switch between vacuuming and nitrogen filling processes, improving packaging efficiency and quality.

Mechanical manufacturing industry

In the metalworking workshop, pneumatic valves are used to control the supply of coolant. For example, in the machining process of CNC machine tools, pneumatic valves can automatically open or close the injection of coolant according to the cutting state of the tool, extending the tool life and improving machining accuracy.

For hydraulic systems of some large mechanical equipment, pneumatic valves can serve as pilot valves to control the flow and pressure of hydraulic oil, enabling complex mechanical actions such as the extension and lowering of crane arms.

Energy sector

Oil and gas industry

In the process of oil and gas field exploitation, pneumatic valves are used to control the transportation of oil and gas. For example, on the Christmas tree at the natural gas wellhead, the pneumatic valve can remotely control the mining output and transmission direction of natural gas to prevent natural gas leakage and explosion accidents.

In petroleum refineries, pneumatic valves are used to control the transportation and distribution of various petroleum products. For example, in catalytic cracking units, pneumatic valves can accurately control the flow rates of feedstock oil and catalyst, ensuring the smooth progress of the reaction.

Power industry

In thermal power plants, pneumatic valves are used to control the fuel supply to boilers. For example, the pneumatic valve controlling the coal powder conveying pipeline can automatically adjust the supply of coal powder according to the load demand of the boiler, ensuring stable combustion of the boiler.

In nuclear power plants, pneumatic valves are used to control the transportation of cooling water and radioactive materials. For example, in the reactor cooling system, pneumatic valves can quickly cut off the supply of cooling water, prevent radioactive material leakage, and ensure the safe operation of nuclear power plants.

In the field of automobile manufacturing

In the automotive painting workshop, pneumatic valves are used to control the spraying of paint. For example, in the process of electrophoretic coating, pneumatic valves can accurately control the flow rate and pressure of the electrophoretic solution, ensuring that the coating on the surface of the vehicle is uniform and consistent.

In the production of automotive components, pneumatic valves are used to control the pressure and flow of hydraulic systems. For example, in the production process of automotive braking systems, pneumatic valves can control the delivery of brake fluid to ensure that the performance of the braking system meets the requirements.

Construction industry

In building water supply and drainage systems, pneumatic valves are used to control the transportation and distribution of water. For example, in the fire protection system of high-rise buildings, pneumatic valves can remotely control the supply of fire water, ensuring that the fire protection system can be quickly activated in the event of a fire.

In building HVAC systems, pneumatic valves are used to control the flow of refrigerant and heat medium. For example, in central air conditioning systems, pneumatic valves can automatically adjust the flow of refrigerant according to indoor temperature and humidity conditions, achieving energy-saving and comfortable indoor environments.

Environmental protection field

In sewage treatment plants, pneumatic valves are used to control the transportation and treatment of sewage. For example, in biological treatment tanks, pneumatic valves can control the gas flow rate of the aeration system, providing sufficient oxygen for microorganisms and improving sewage treatment efficiency.

In garbage incineration plants, pneumatic valves are used to control the fuel supply and flue gas emissions of the garbage incinerator. For example, pneumatic valves that control combustion air and fuel can ensure stable combustion in a garbage incinerator, while reducing pollutant emissions by controlling flue gas discharge valves.