Valves play a vital role in industry and are widely used in various systems and processes. They are mainly used to control the flow, pressure, temperature and direction of fluids (liquids, gases or steam). Depending on the application field, the types and functions of valves are also different. The following are some of the main areas of use of valves in industry:
1. Fluid control: Valves are used to regulate the flow of fluids, including switch control, flow regulation and pressure control.
For example: Ball Valves, gate valves: used to switch the on and off of fluids. Regulating valves, check valves: used to regulate flow or prevent fluid backflow.
2. Gas transportation: In natural gas, electricity, chemical and other industries, valves are widely used in gas transportation systems.
For example: safety valve: used to prevent pipeline pressure from being too high to ensure system safety. Butterfly valve: used for flow regulation and shut-off control of gas pipelines.
3. Pharmaceutical and food industry: In the pharmaceutical and food production process, valves are used for fluid control, filling, cleaning and disinfection to ensure product quality and production safety.
For example: sanitary valves: used in places requiring high hygiene standards to avoid pollution.
4. Steam system: In the energy, petrochemical and other industries, valves are needed to regulate the pressure and flow of steam systems.
For example: Steam safety valve: prevents system pressure from exceeding the limit and protects equipment. Expansion valve: used to control steam flow and maintain stable operation of equipment.
5. HVAC system (heating, ventilation and air conditioning): In the HVAC system, valves are used to control the flow of air, hot and cold water, and maintain indoor temperature and humidity.
For example: Temperature control valve: used to adjust the temperature of the fluid. Distribution valve: distributes hot and cold fluids according to demand.
6. Pressure control: In many industrial processes, valves are used to regulate the pressure of pipelines or equipment to ensure that it is within a safe range.
For example: Pressure regulating valve: maintains a stable pressure in the system. Safety valve: automatically opens when the pressure exceeds the set value to prevent equipment damage.
7. Chemical reaction and transmission: In chemical plants, valves are used to control the input and output of fluids in reactors to ensure stable reaction conditions.
For example: Regulating valve: controls the flow, temperature and pressure of chemical raw materials. Diaphragm valve: used in corrosive or easily contaminated fluids to avoid leakage.
8. Liquid transportation: In water treatment, petroleum, chemical and other industries, valves are used for the control and management of liquid pipelines.
For example: stop valve: used to accurately control liquid flow. Pressure reducing valve: used to reduce the pressure in the system.
9. Automation and intelligent control: With the development of automation technology, modern valves are often used in conjunction with sensors, actuators and other equipment for remote control and intelligent adjustment.
For example: electric valves: switch control through electrical signals. Pneumatic valves: control the action through air sources and are widely used in automation systems.
In general, valves play a multifaceted role in industry. From ensuring system safety, improving production efficiency to realizing intelligent control, they are an indispensable part of industrial equipment.