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1. 发明授权

US3896850A Check valve and leak indicator 失效
标题翻译：止回阀和泄漏指示器
公开(公告)号：US3896850A
公开(公告)日：1975-07-29
申请号：US37980373
申请日：1973-07-16
申请人： WALTRIP HOBART
发明人： WALTRIP HOBART
IPC分类号： F16K17/04 , F16K37/00 , G01M3/28 , F16K21/04
CPC分类号： F16K17/04 , F16K37/0033 , F16K37/0041 , G01M3/2807 , Y10T137/7929 , Y10T137/8242
摘要： Discloses a check valve and a leak indicator for indicating the position of a valve closure means relative to spaced apart inlet and outlet ports. The invention involves the use of an elongated cylindrical valve chamber and a spring loaded valve closure mounted therein for reciprocating movement between the inlet and outlet ports, so as to require maximum axial movement to open the outlet port. Magnetic indicating means situated outside the valve housing and outside the valve chamber are completely isolated and separated from the fluids in the valve chamber, and move responsive to the axial movement of the reciprocating valve closure to indicate the smallest leak.
摘要翻译：公开了一种止回阀和泄漏指示器，用于指示相对于间隔开的入口和出口的阀门关闭装置的位置。本发明涉及使用细长的圆柱形阀室和安装在其中的弹簧加载的阀闭合器，用于在入口和出口之间的往复运动，从而需要最大程度的轴向移动以打开出口。位于阀壳体外部和阀室外部的磁性指示装置与阀室中的流体完全隔离并分离，并且响应于往复阀闭合件的轴向运动而移动以指示最小的泄漏。

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