Standard packing chamber with 125 RMS wall finish, burnished non-rotating stem and PTFE or graphite packing rings. Many times the cycle life of a standard knife gate valve.

• 使用寿命长的防泄漏阀杆密封。标准填料腔具有125 RMS壁面光洁度,光面的不旋转阀杆和聚四氟乙烯或石墨填料环。使用寿命是标准刀闸阀的许多倍。