The valves which are design adopted good rubber are full covered with the face of gate disc so that they have high flexible, long lifetime and no leakage features, etc.

该阀设计采用闸板表面全面包覆优质橡胶，因此具有高弹性、长寿命、无渗漏等特点。

youdao

The valves which are design adopted good rubber are full covered with the face of gate disc so that they have high flexible, long lifetime and no leakage features, etc.

该阀设计采用闸板表面全面包覆优质橡胶，因此具有高弹性、长寿命、无渗漏等特点。

youdao