| 摘要 |
A butterfly valve according to an embodiment of the present invention includes a body which forms a duct to enable a fluid to flow through; a disc unit which is rotatably installed on the duct and rotates to open or close the duct; ring-shaped coupling units which protrude from the body to the duct; and a sealing unit which are coupled to the coupling units. The coupling units are separated into first, second, and third members to be coupled to the body while covering the sealing unit. |
