Modeled after the original Type A pinch valve, the valve is a rugged, long-lasting, air-operated pinch valve with a built-in actuator.

以A型夹管阀为基础改进而来，这种锚链管道阀门坚固耐用，使用寿命长，并配置内置气动执行器的气动夹管阀。

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Air Operated - Uses auxiliary compressed air or water source to shift valve, rather than a solenoid operator.

气动—使用辅助压缩空气或水的来源转变阀，而不是一个螺线管操作。

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Air Operated - Uses auxiliary compressed air or water pressure to shift valve, rather than a solenoid operator. ASCO offers a choice of 3 pneumatic operator pressure ratings.

气动—使用辅助压缩空气或水压力转换阀，而不是一个螺线管操作。会议提供了一个选择3个气动操作压力等级。

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Take the chaos that has engulfed Brazil's airports for the past six months, the result of a creaking air-traffic control system operated by disgruntled air-force staff.

ECONOMIST: Brazil: Lula opts for a quiet life | The

In addition to the 168 towers to be closed April 1, some 16 towers that are operated on a cost-sharing basis with other governments, and five operated with the Air National Guard, will be closed Sept. 30.

CNN: FAA begins process to close 168 towers on April 1

The Dubai-bound Boeing 747-400 operated by National Air Cargo crashed just after takeoff Monday from Bagram Air Base around 11:20 a.m. local time, the National Transportation Safety Board said in a statement Tuesday.

NPR: Company IDs 7 Killed In Afghanistan Plane Crash