... valve guide sleeve 气门导管套环 valve rod sleeve 阀杆套筒 safety valve pressing sleeve 安全阀压套 ...
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在套筒上四分之一转的刻度，以及阀杆上的刻痕，显示大约的流量测量。
The quarter turn graduations on the sleeve, with the scribed line on the stem, provide for approximate flow measurement.
注意：阀门装运时是处于关闭位置。塑料套筒上的指示器与阀杆上的垂直刻线对齐。
NOTE: the valve is shipped in the closed position. The indicator on the plastic sleeve is aligned with the vertical scribed line on the stem.
阀杆及其沟槽环和定位套筒显示阀门的节流位置。
The valve stem with its grooved rings and positioning sleeve indicates the throttled position of the valve.
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