Various classifications and applications of valves
Valves, an indispensable device in piping systems, play an important role in control, regulation and protection. Today, we will come together to explore the various classifications of valves and their practical applications in the mystery.
First, according to the function and application classification
Blocking valve (Blocking Valves)
Blocking valves, as the name suggests, is used to open or close the pipeline in the fluid channel. They are like the piping system in the “switch”, to ensure the normal flow of fluid or completely blocked. These valves include gate valves, globe valves, plug valves, ball valves, butterfly valves, and diaphragm valves.
Check Valves
Check valves, also known as check valves, have the primary function of preventing the backflow of fluid in a pipeline. Imagine that during the suction process of a pump, if there is no check valve, the water may flow back to the pump, causing unnecessary trouble. Therefore, check valves are particularly important in pump equipment.
Safety Valves
Safety valves are the “guardians” of the piping system, they can monitor and control the pressure in the pipeline to ensure that the pressure does not exceed the preset safety value. Once pressure is exceeded, safety valves open quickly to relieve excess pressure, protecting piping and equipment from damage.
Control Valves
Control valves precisely regulate the pressure and flow of fluids in pipelines to meet various process requirements. They act as “regulators” in the piping system, ensuring that the fluid operates at its optimal level.
Dividing Valves
The main function of a Dividing Valve is to distribute the fluid in the pipeline to different paths or systems. For example, with the help of a Dividing Valve, we can distribute the flow of water from the same pipe to a number of different water points.
Vent Valves
Vent valves act as “scavengers” in piping systems, removing unwanted gases from the pipes, increasing their efficiency and reducing energy consumption. In the boiler, air conditioning and water supply and drainage systems, exhaust valves play a vital role.
Second, according to the pressure level classification
According to the pressure tolerance of the valve, we can categorize them into vacuum valves, low-pressure valves, medium-pressure valves, high-pressure valves and ultra-high-pressure valves. These classifications help us choose the right valve according to the actual application scenario.
Third, according to the working temperature classification
Valve operating temperature is also an important factor to consider when choosing. According to the different operating temperatures, we can divide the valve into ultra-low temperature valves, low temperature valves, room temperature valves, medium temperature valves and high temperature valves. It is vital to ensure that the selected valve can work properly in its operating temperature range.
Fourth, according to the drive mode classification
Automatic valves (Automatic Valves)
Automatic valves do not require external drive, they can rely on the fluid’s own energy to action. For example, safety valves and check valves are usually automatic valves.
Powered Valves
Powered valves require an external power source to actuate and include electric, pneumatic, and hydraulically actuated valves. These valves can be remotely controlled and automated as needed.
Manual Valves
Manual valves, on the other hand, require human power to operate, and they are usually equipped with components such as hand wheels and handles. Although manual valves may require more labor to operate, they are usually more advantageous in terms of maintenance costs and reliability.
V. Other ways of categorization
In addition to the above classification, valves can also be classified according to the nominal diameter, structural features, connection methods and valve body materials and other ways. These classifications help us to more fully understand the characteristics of the valve and application scenarios.
In short, the valve as a key device in the piping system, its variety and different functions. When selecting and using valves, we need to consider various factors according to the actual application scenarios and needs to ensure the safe and efficient operation of piping systems.