As for the pressure switch, in fact, we mainly pay attention to imports, which are imported from the United States. At present, the world-class pressure switch manufacturers are all in the United States, mainly CCS, SOR and UE. The first two kinds of pressure switches are necessary for medium and large thermal power plants and nuclear power plants. The design institute and other units will not advise the owner to choose domestic or other pressure switches. Pressure switches are mainly used in power plants, oil filtration systems and hydraulic systems, such as Dongfang Electric Group, Sichuan Chuanrun and Daya Bay Nuclear Power Station. These three kinds of pressure switches have their own advantages, and the key is to determine them according to the actual needs of customers.

CCS switch is an old American brand and the most widely used switch product in Europe and America. Mainly used in aerospace, power plants, hydraulic systems and so on. This switch is different from other switches on the market at present. The core device of the sensor is a dish spring with negative elastic coefficient made of special material. This sensor device is characterized by high action precision, high repeatability, good stability, high reliability, long service life and single set point (especially suitable for power plants with high reliability). No one can prevent it at present. Disadvantages: Except for the power plant industry, there are not as many people in other industries in China as SOR. The price is cheaper than SOR.

UE switch is mainly used in hydropower, because its dead zone is small, and the dead zone required by the pressure of hydropower system is relatively small. But the overall performance is not as good as the first two switches, and some models are not cheap, even more expensive than SOR.

The main advantages of SOR switch in China are its great influence and wide promotion scope. Disadvantages are high price, piston sensor, multiple set points, less stability and reliability than CCS, and many anti-corrosion products on the market. But the overall performance of SOR is fine.

Domestic pressure switch, at present, Hangdian Tian Li has done a better job.

Comprehensive score

Brand quality, price, domestic popularity and cost performance

CCS★★★★★★☆★★★★★★

SOR ★★★★☆ ★ ★★★★★ ★

UE★★★★★★★★★★★★☆

Japan ★★★★★★★★★★☆ ★★★★☆.

Korea ★★★★☆★★☆★★★★

Made in China ★★★★★★★★★★★★☆★★★★★★ ★

Prevention and control ★★★★★★★★★★★☆★★★★★★★