The valveface is provided with a pilot hole or a micro fixing valve.
阀面上 冲有导向孔或微型固阀。
2
If it is found there is damage to the valveface should be immediately suspended, can be specialized material repair the lesion, or entrust the relevant units of production.
若发现阀门面有损坏时应立即停用,可用专门材料修补患处,或委托有关生产单位生产。
3
No matter how the valve is installed, the back of the upstream seat protects the face of the downstream seat.