... 升杆式（明杆） rising stem （RS） 非升杆式（暗杆） non-rising stem （NRS） 指示器/限位器 indicator/stopper ...
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...ve 冷水工作压力 Cold Working Pressure 圆柱体气缸 Cylinder 直流电 Direct Current 双阀瓣 Double Disc 暗杆 Non-Rising Stem 认 证的产品 Indicates product has been approved by Underwriter's Laboratories, Inc. 真空 Vacuum .
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non-rising stem valve 不升杆式阀 ; 暗杆阀
non-rising stem wedge sluice valve 暗杆楔式闸阀
non rising stem 暗杆闸阀
non-rising stem wedge gate valve 暗杆楔式闸阀
Non Rising Stem Single 暗杆楔式单闸板闸阀
Sluice valves are to be of a non-rising stem type and to have solid wedge discs.
泄水阀应该是一种闸阀，并且有一致的闸板。
The Fig. 1710 Balancing valve is a non-rising stem design incorporating a parabolic (plug) shaped disc.
型号1710平衡阀为暗杆结构，配置抛物线（塞）形阀瓣。
This arrangement combined with the feature of a non-rising stem assures a positive seal against either steam or water.
这种结构方式具有不上升阀杆的特点，保证了对蒸汽或水都能够达到很好的密封功能。
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