How to choose the model of the pneumatic control valve What are the characteristics of the model of

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only: Suzhou Neway Valve Co., Ltd., Shanghai Guanlong Valve Machinery, Shanghai Qizhong Valve Manufacturing, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

The auxiliary structure of the pneumatic control valve can realize a variety of different functional requirements, mainly including electric-pneumatic converters, valve positioners, air filtration and laughing cover pressure reducers, amplifiers and hand wheels.

1. The electric-pneumatic converter is usually composed of a Changhao circuit, a magnetic circuit, a pneumatic balance part, etc., and is a device that converts the current signal into an air pressure signal.

2. Valve positioner is a device that converts electrical signals into pressure signals.

3. The air filter pressure reducer is used to purify the air source from the air compression system, remove dust and impurities in the air, and adjust the air source pressure from the compressed air system to the required pressure value.

4. Some valves of the amplifier require a relatively short switching time, and the diaphragm size of the pneumatic actuator of these valves is very large, so an amplifier needs to be installed between the pneumatic actuator and the valve positioner to improve the action of the valve, and its function is to increase the intake and discharge volume of the pneumatic actuator.

5. The handwheel mechanism is used in conjunction with the pneumatic control valve. When the air source (signal) pressure is faulty, and the diaphragm, spring and seal of the actuator are damaged, the handwheel mechanism can be used to operate the valve to maintain the adjustment function of the regulating valve.