The utility model involves an auto-close valve when earthquake happens.

一种自动地震煤气关闭阀门。

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Open and close valve is equipped for front-end memory type alloy detector and upper shifting fork.

并设前端装记忆合金检测器与上拨叉配合的开闭阀。

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We have many series production such as plunger valve, integral heat ball valve, check valve, close valve, duct valve.

主要产品包括：柱塞阀、高温球阀、止回阀、截止阀、排污阀、闸阀、波纹管截止阀及民用阀门。

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Proper metrics such as the amount of time it takes to identify a problem and to close a valve are essential.

FORBES: Pipeline Explosion Rattles Natural Gas Industry

Risk assessments on the next stage, to close off the valve where the oil is coming from, are still being carried out.

BBC: Shell claims progress on North Sea oil leak

That included Exxon employees' failure to close an upstream safety valve, which could have significantly reduced the size of the spill after it was first detected.

NPR: APNewsBreak: $1.7M Penalty Proposed In Exxon Spill