| 摘要 |
An excess flow valve for use in a conduit as a precaution to quickly shut off the flow of a fluid in said conduit in the event of a rupture in the conduit. A valve disc is connected to a linkage including a two-arm lever, one arm of which engages a spring-biased stop for adjusting the distance of the valve disc to its valve seat in quiescent flow state and the other arm of which is connected to a setting device for manually or automatically closing the valve regardless of the pressure of the fluid flowing through the valve.
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