Views: 23 Author: Site Editor Publish Time: 2025-06-23 Origin: Site
In pneumatic control systems, pressure regulating valves are a crucial component that can ensure the stability of system pressure and avoid the normal operation of equipment due to pressure fluctuations. However, there are many types of pressure regulating valves, among which precision air pressure valves and ordinary pressure regulating valves are the two most common types. Many people may wonder: What is the difference between them? How should they be selected in practical applications? This article will reveal the difference between the two for you.
① Different pressure regulation accuracy
Ordinary pressure regulating valve: When regulating air pressure, the pressure fluctuation is large, which is suitable for systems with low precision requirements, such as pneumatic tools, ordinary mechanical equipment, etc.
Precision air pressure valve: It adopts a multi-stage pressure stabilization structure, which can maintain extremely small pressure fluctuations (usually within ±0.1%), and is suitable for equipment with extremely high requirements for air pressure stability, such as semiconductor manufacturing, precision instruments, medical equipment, etc.
② Different internal structure
Ordinary pressure regulating valves usually adopt a single-stage pressure reducing structure, which is relatively simple to adjust the airflow and has a general response speed.
Precision air pressure valves usually adopt a two-stage or multi-stage pressure stabilization design and are equipped with more sophisticated control elements, such as diaphragm-type adjustment mechanisms, which can respond more sensitively to changes in air pressure, thereby improving pressure stability.
③ Different response speeds
When the air pressure changes, the response speed of ordinary pressure regulating valves is relatively slow, and the pressure adjustment process may have a certain lag.
Precision air pressure valves can quickly sense pressure fluctuations and quickly make compensation adjustments to ensure stable air pressure.
④ Different pressure control ranges
The control accuracy of ordinary pressure regulating valves is generally around ±5%, which is suitable for applications with less stringent pressure requirements.
The control accuracy of precision air pressure valves can reach ±0.1% or even higher, and can accurately control air pressure output.
⑤ Different applicable scenarios
Ordinary pressure regulating valves are mostly used in ordinary industrial equipment, such as pneumatic tools, packaging machinery, ordinary assembly lines, etc.
Precision air pressure valves are widely used in precision manufacturing fields, such as semiconductor equipment, laboratory instruments, aerospace equipment, medical devices, etc.
In practical applications, the choice of ordinary pressure regulating valve or precision air pressure valve mainly depends on the following factors:
Requirement for pressure stability: If your equipment is not sensitive to pressure fluctuations, you can use ordinary pressure regulating valve; but if extremely high pressure stability is required, such as precision machining and medical equipment, you must use precision air pressure valve.
Response speed of pneumatic system: If the system requires rapid response to pressure changes, such as in the semiconductor industry, you need to choose a precision air pressure valve with a faster response speed.
Cost and budget: Precision air pressure valves are more expensive, but they can improve the accuracy and life of the equipment, so they are more cost-effective in high-end application scenarios.
Comparison items Ordinary pressure regulating valve Precision air pressure valve
Pressure regulation accuracy ±5% or so Within ±0.1%
Response speed General Fast response
Internal structure Single-stage pressure stabilization structure Multi-stage pressure stabilization structure
Pressure fluctuation Relatively obvious Extremely small
Applicable scenarios Pneumatic tools, packaging machinery Precision manufacturing, semiconductor equipment, medical equipment
Price Low High
If you only need to simply control the air pressure, such as ordinary production lines or automation equipment, ordinary pressure regulating valves can fully meet the needs; but if you are engaged in high-precision industries (such as semiconductors, aerospace, laboratory research), then precision air pressure valves are a better choice.
Choosing the right pressure regulating valve can not only improve the performance of the equipment, but also effectively reduce the loss caused by air pressure fluctuations, ensuring the stability and accuracy of production. So, next time you face these two valves, do you know how to choose?
