Butterfly Valves
As a basic construction of the butterfly valve, open and close are made by stopping the disk-shaped disc with the stem and rotating it by 90 degrees on a simple-like body like a pipe-cut.
JIS terms: butterfly valve
- 1)This valve rotates disc 90 degrees around the stem (stem) in the body.
- 2)Smallest in face to face dimensions, compact, lightweight, and easy to install and remove.
- 3)It can be used for either “control action” in which the flow rate is adjusted at the intermediate position, or “on-off action” in which it is used for opening or closing.
Characteristics due to structural differences in valve
| Item | Gate Valves | Globe Valves | Ball Valves | Butterfly Valves |
|---|---|---|---|---|
| Disc at valves fully open | Remain in the flow path | Remain in the flow path | Remain in the flow path | Remain in the flow path |
| Operation of disc | Vertical actuation | Vertical actuation | Rotary actuation | Rotary actuation |
| Common seat Materials | Metal | Metal | Software | Software |
| Automatic operation | Pneumatic and electric actuator | Pneumatic and electric actuator | Pneumatic and electric actuator | Pneumatic and electric actuator |
| Use of intermediate opening | Not suitable | Be suitable | Not suitable | Be suitable |
Valve Structural Related Pages
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