Precision ground blade on both sides for tighter packing chamber sealing. Sealing face of the gate is lapped to provide the best possible seat tightness.
两侧都经过精密光亮磨光的刀片确保填料腔的气密性密封。闸板的密封面经过研磨，以提供最好的阀座密封性。
2
The gate is guided by the seat, extending the sealing life of the packing.
闸板由阀座引导，可以延长填料的密封寿命。
3
For example, in order to prevent secondary pollution, even the use of sewage is not Valve asbestos packing and gasket sealing.