| 摘要 |
PURPOSE: A high-functional metal sheet butterfly valve is provided to increase and durability and air-tightness by adding elastic force despite manufacturing a body sheet ring and a disk sheet ring into a lock. CONSTITUTION: A high-functional metal sheet butterfly valve comprises a body(5), a disc(3), and a snap ring. A body sheet ring(2) is projected inside the body. The disc is installed inside the body to be rotated. The disc is contacted with the body sheet ring. An installation groove is formed in the lower body of the body sheet ring. The snap ring is on the upper body. A space for movement is formed between the upper side of the body sheet ring and the lower side of the snap ring.
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