Use bellows mechanical seal the cost is too high, but the service life is longer than the first two, maintain or change relatively trouble.
使用波纹管机械密封的的成本太高，可是使用寿命长于前两种，维护或者改换时斗劲麻烦。
With bellows seal can solve this problem.
采用波纹管密封可彻底解决这个问题。
The welded metal bellows mechanical seal is largely used for the axial seal of hot oil pump in refinery.
焊接金属波纹管机械密封主要用于炼油厂热油泵的轴封。
The chief products include: Bellows seal globe valve, Free-float steam trap, Pilot pressure reducing valve, Pneumatic control valve, Self-acting temperature-sensing valve, Cyclone separator etc.
目前工厂生产的主导产品有：波纹管密封截止阀、自由浮球疏水阀、先导式减压阀、气动调节阀、自作用式温控阀、汽水分离器等。
The seal assembly comprises a seal ring, a seal ring shell and bellows.
密封组件包括密封环、密封环壳体和波纹管。
Failure is more common with the screw put on the Bellows Seal Valves threaded stem wear, so that the valve can not close.
比较常见的故障是阀杆与螺套上的丝扣磨损，陶瓷阀门使阀门无法关闭。
The article discusses the calculation of mechanical properties of welded metal-bellows applied in mechanical seal devices.
本文主要讨论应用于机械密封 装置中的焊接金属波纹管力学性能的计算。
It is of externally-mounted type, single seal multi-spring and Teflon bellows transmission.
外装式，单端面多弹簧、聚四氟乙烯波纹管传动形式。
It is of externally-mounted type, single seal multi-spring and Teflon bellows transmission.
外装式，单端面多弹簧、聚四氟乙烯波纹管传动形式。
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