Basic parameters and functions of valves

Published Time:

2026-05-07

author：anxele

The basic parameters of valves, such as nominal pressure (PN)

The basic parameters of valves, such as nominal pressure (PN) and nominal diameter (DN), are crucial for selecting the appropriate valve. The main functions of valves include cutting off or connecting media, adjusting flow rate, and changing the direction of media flow. There are various connection methods for valves, including flanges, threads, welding, and clamps. The pressure temperature rating of the valve is also an important factor to consider when selecting a valve. The maximum allowable non impact working pressure of the valve may vary depending on the material and operating temperature.

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