陶瓷阀板耐磨、耐腐蚀、耐固体颗粒侵蚀，寿命长，适合各种气体、液体阀门的密封。工作面精度极高，其平面度可达0.05微米。

The ceramic plates of air valves against abration, corrosion, dust, dirt, and sand. One dynamic plate and one stationary plate are made of extremely hard aluminum oxide .The flatness of seal face is 0.05μm.