<big id="ncwkf"><progress id="ncwkf"><nobr id="ncwkf"></nobr></progress></big>
<strike id="ncwkf"><delect id="ncwkf"><em id="ncwkf"></em></delect></strike>

    <strike id="ncwkf"><blockquote id="ncwkf"></blockquote></strike>
    <label id="ncwkf"></label>

    <label id="ncwkf"><sub id="ncwkf"><sup id="ncwkf"></sup></sub></label>

      什么是彈性座封閘閥

      2017-03-20 關注次數:

      彈性座封閘閥又叫升降桿閘閥 ( 亦叫明桿閘閥)。

      通常在升降桿上有梯形螺紋,通過閥門頂端的螺母以及閥體上的導槽,將旋轉運動變為直線運動,也就是將操作轉矩變為操作推力。

      通風蝶閥|渠道閘門|盲板閥|插板閥|煤氣閘閥

      通風蝶閥

      渠道閘門

      盲板閥

      插板閥

      煤氣閘閥

      相關文章

      91天仙TV国产第一页|欧美老妇人与禽交|天天影视性色香欲综合|日本午夜免费啪视频在线|亚洲成a人片在线观看无码
      <big id="ncwkf"><progress id="ncwkf"><nobr id="ncwkf"></nobr></progress></big>
      <strike id="ncwkf"><delect id="ncwkf"><em id="ncwkf"></em></delect></strike>

        <strike id="ncwkf"><blockquote id="ncwkf"></blockquote></strike>
        <label id="ncwkf"></label>

        <label id="ncwkf"><sub id="ncwkf"><sup id="ncwkf"></sup></sub></label>