direct acting valve
... direct acting type regulator 直接作用式调节器 direct acting valve 直接操纵阀 direct action pressure controller 直接作用式压力控制器 ...
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如采用液压操纵，则可直接从泵车的泵送系统中获取液压驱动力，并通过手动液压阀实现操纵。
Such as the use of hydraulic manipulation, or directly from the pump of the hydraulic pumping system of access to driving force, and through hydraulic valve manually manipulated to achieve.
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