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1. Definition of Self Operated Valve

The English name for a self operated regulator is Self Operated Regulator, which literally translates to "Automatic Regulator". It is a valve that integrates detection, transmission, control, display, and execution. There is a significant difference between it and a control valve.

2. Classification of Self Operated Valves

Self operated valves can be classified into the following four categories based on their usage functions: ⑴ Self operated pressure regulating valves, ⑵ Self operated temperature regulating valves, ⑶ Self operated flow regulating valves, and ⑷ Self operated liquid level regulating valves. Among them, self operated pressure regulating valves have the most varieties and specifications, the most complex parameter changes, and the widest range of adaptability or usage scenarios.

3. Significant features of self operated valves

The characteristics of self operated valves are as follows: ⑴ Fully automatic without electricity or gas, safe, energy-saving, and environmentally friendly. ⑵ Absolutely explosion-proof Compared to pneumatic or electric control valves, without intermediate or auxiliary instruments, the number of fault points or unreliable points is greatly reduced.

⑷ Simple structure, easy operation, no involvement of any electrical components, convenient maintenance or repair.

4. Key points for selecting self operated pressure regulating valves

The selection of self operated pressure regulating valves should pay attention to several key points on the basis of mastering basic operating parameters: ⑴ selection of flow characteristics; ⑵ Opening verification (three five principle) (5/15/35)%; ⑶ Selection of valve internals (single, double, sleeve, multi-stage); ⑷ Selection of executing agency; ⑸ Selection of front and back installation of condenser for steam; ⑹ Calculation principles before the control valve; ⑺ The necessity for the DN of the nitrogen release valve to be greater than that of the nitrogen supply valve Selection of compression method.