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.
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。
When the closed channel, the wedge-shaped head with a stem to open up the ball and pressed to seal the valve seat.
当关闭通道时，用阀杆的楔形头使球体涨开与阀座压紧达到密封。
The pump valve has a structure of semi-spheric plunger with guide rod, and its seat and ball are aligned by means of a spring, and it is opened and closed in time.
泵阀件采用带导向杆的半球形柱塞结构，弹簧制动，精确控制阀球与阀座对中，启闭动作及时。
A set pre-sized diverter chamber with a free-floating ball and seat incorporating a flow control release valve is the optimum diversion unit.
前一组巨细与自在浮动球，并归入一个流量节制释放阀座转向器商会是最佳分流单元。
Metal to metal sealed ball valve with its body seat, ball, other metal parts, and so forth, closely contact with each other, having naturally formed a static electricity passage.
金属硬密封球阀的阀体、阀座、球体等金属零部件紧密接触，自然形成了静电通道。
After the ball valve seat wear and tear, can be a ball into the seat, and with the rod lightly tapping ball several times, until the valve with the valve seat up close together.
球形阀阀座磨损后，可用一钢球放到阀座上，用金属棒轻轻敲击钢球数次，直到球阀与阀座密合为止。
The result is a seat with physical properties that are far superior to conventional ball valve seats of carbon graphite construction.
其结果是一个是远远优于传统球碳石墨阀座建设物理性质的席位。
The result is a seat with physical properties that are far superior to conventional ball valve seats of carbon graphite construction.
其结果是一个是远远优于传统球碳石墨阀座建设物理性质的席位。
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