Position seating eliminates stress and potential binding due to thermal expansion of the stem 定位阀座消除了由于阀杆的热膨胀导致的应力和可能的弯曲。
2.
Internal stops provide positive over travel protection for power actuated valves and act as a reference to position the discs in the open and closed positions 内置的止动装置为动力执行机构提供行程保护，并且作为参考坐标在开启和关闭位置定位阀瓣。
3.
Gate valves are offered in two designs : parallel disc and flexible wedge . parallel disc are position seated ; flexible wedge are torque seated when closing 我们提供的闸阀的结构形式具有两种：平行阀瓣和弹性楔形闸板。平行阀瓣为定位阀座密封；弹性楔形闸板在关闭时则是扭矩阀座密封。
