然后倒置安装阀门，使得流体将球提升到阀座上。
Then install valve upside down for fluid to lift ball into seat.
重力球形止回阀可以变为通风阀，只需用漂浮球体更换标准球体，然后在安装时将阀门倒置，使其阀座向上即可。
Gravity ball check valves are converted to vent valves by replacing the standard ball with a floater ball and inverting the valve at installation-with seat up.
它们是否适合安装在任何位置，水平，垂直，在斜面，或倒置。
They are suitable for mounting in any position; horizontal, vertical, on an incline, or inverted.
适合安装在任何位置，水平，垂直，在斜面，或倒置。
Suitable for mounting in any position; horizontal, vertical, on an incline, or inverted.
适合安装在任何位置，水平，垂直，在斜面，或倒置。更多…
Suitable for mounting in any position; horizontal, vertical, on an incline, or inverted. more…
针对以上情况，建议在井口处安装倒置放置的扩散式传感器，方井处安装吸入式传感器。从而能更准确检测硫化氢浓度。
Depending on that, suggest place a dispersive sensor upside down at the wellhead and a suction sensor at the cellar to test the hydrogen sulfide concentration accurately.
针对以上情况，建议在井口处安装倒置放置的扩散式传感器，方井处安装吸入式传感器。从而能更准确检测硫化氢浓度。
Depending on that, suggest place a dispersive sensor upside down at the wellhead and a suction sensor at the cellar to test the hydrogen sulfide concentration accurately.
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