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Do you know all 100 technical terms of valves?-----part 2

May 11, 2023

1. Valve

The whole of mechanical products with movable mechanisms used to control the flow of media in pipelines.

2. Gate valve (gate valve, slide valve)

The opening and closing part (gate) is driven by the valve stem and moves up and down along the valve seat (sealing surface).

3. Globe valve, stop valve

The opening and closing (disc) valve is driven by the valve stem and moves up and down along the axis of the valve seat (sealing surface).

4. Throttle valve

A valve that changes the cross-sectional area of ​​the passage through the opening and closing member (disc) to adjust the flow and pressure.

5. Ball valve

Open-close (ball) valve that rotates about a curve perpendicular to the passage.

6. Butterfly valve

Open and close (butterfly disc) valves that rotate around a fixed axis.

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7. Diaphragm valve (diaphragm valve)

The opening and closing type (diaphragm) is driven by the valve stem, moves up and down along the axis of the valve stem, and separates the action mechanism from the medium.

8. Plug valve (cock)

On-off (plug) valve that rotates about its axis.

9. Check valve (check valve, non-return valve)

The opening and closing type (disc) uses the force of the medium to automatically prevent the reverse flow of the medium.

10. Safety valve (safety valve, relief valve)

Open-close type (disc) When the medium pressure in the pipeline or machine equipment exceeds the specified value, it will automatically open and discharge; when it is lower than the specified value, it will automatically close and protect the pipeline or machine.

11. Pressure reducing valve

Through the throttling of the opening and closing parts (disc), the pressure of the medium is reduced, and the pressure behind the valve is automatically maintained within a certain range by the direct action of the pressure behind the valve.

12. Steam trap

Valve that automatically drains condensate and prevents steam leakage.

13. Draining Valves

Valves used for sewage discharge of equipment such as boilers and pressure vessels.

14. Low pressure valve

Various valves with nominal pressure PN≤1.6MPa.

15. Middle pressure valve

Various valves with nominal pressure PN≥2.0~PN<10.0MPa.

16. High pressure valve

Various valves with nominal pressure PN≥10.0MPa.

17. Super high pressure valve

Various valves with nominal pressure PN≥100.0MPa.

18. High temperature valve

Used for various valves with medium temperature > 450°C.

19. Cryogenic valve (sub-zero valve)

It is used for various valves with a medium temperature of -40°C to -100°C.

20. Cryogenic valve

Various valves for medium temperature <-100°C.

 

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