隔膜閥是用隔膜作啟閉件封閉流道、截斷流體、并將閥體內腔和閥蓋內腔隔開的截止閥。結構簡單、密封和防腐性能較好，流體阻力小。
     Diaphragm valve is a stop valve that uses diaphragm as the opening and closing part to close the flow channel, block the fluid, and separate the inner cavity of valve body and bonnet. The utility model has the advantages of simple structure, good sealing and anti-cor osion performance and small fluid resistance.