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Pressure line safety valve - has sprung bypass valve opening opposite to main valve which then requires sufficient back pressure for opening
Pressure line safety valve - has sprung bypass valve opening opposite to main valve which then requires sufficient back pressure for opening
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机译:压力管线安全阀-与主阀相对的弹簧旁通阀打开,然后需要足够的背压才能打开
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摘要
The valve consists of a housing with a valve pressed by a spring in the direction of flow against its seat. The valve incorporates a bypass valve which can be operated by hand via a push rod. When the bypass valve is opened, pressure medium can flow from the inlet side via a channel in the valve to the outlet side. The bypass valve is pressed by a spring against its seat and opens in the opposite direction to the main valve in which it is mounted. The main valve body has a hollow stem which protrudes through a seal from the housing and is used to close the valve by hand. The operating rod for the bypass valve passes through this hollow stem. The outlet side of the valve is first pressurised via the bypass valve before the full flow area is opened by the main valve.
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