隔膜阀是用隔膜作启闭件封闭流道、截断流体、并将阀体内腔和阀盖内腔隔开的截止阀。结构简单、密封和防腐性能较好，流体阻力小。
     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.