Note: Valves are static grounded by two ball detents that insure electro-continuity between the stem body and ball.

注意：这种阀门是采用两个球形制动器实现静电接地，确保阀杆阀体和球体之间的电镀连续性。

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In 1980, the institute and Beijing municipal electrical factory has successfully developed line frequency coreless bathroom plug stem bottom note type electric insulation casting.

年，北京市机电研究院与北京玛钢厂研制成功工频无芯塞杆底注式保温浇注电炉。

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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.

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。

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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.

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。

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