| 摘要 |
PURPOSE: A gravity type valve switch is provided to accurately and securely seal a receiving member because a pulling member pulls down an acting member by the gravity. CONSTITUTION: A gravity type valve switch comprises a receiving member(10), an active member(20), and a pulling member(30). The receiving member has a receiving space and a through hole on the bottom. The active member is arranged in the receiving space. The pulling member is movably installed under the receiving member and has one or more permeation holes.
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