Air operated double diaphragm pumps provide an interesting sealless alternative to centrifugal and positive displacement pumps, and are invaluable for applications where it is impossible or dangerous to use electricity.空气经营双隔膜泵提供了一个有趣的sealless替代离心式和容积式泵，是宝贵的应用场合是不可能或危险的用电。 First introduced more首先介绍了更多的
than 40 years ago, more recent innovations in pump design and the construction of the diaphragms are boosting demand for these pumps.比40年前，最近的创新，泵的设计和建设的隔膜是刺激了需求对这些水泵。 Tom Rozee provides the details.汤姆Rozee提供细节。
Introduction 导言
While air operated double diaphragm (AODD) pumps have never been away, their popularity has been making something of a comeback over recent years.虽然空气经营双重隔膜（ AODD ）水泵从来没有消失，其受欢迎程度已使一些东山再起最近几年。 Indeed there are many manufacturers of AODD pumps throughout the world.事实上有许多制造商AODD泵在世界各地。
Introduced over 40 years ago, the AODD pump has seen a number of innovations and offers an interesting sealless, displacement alternative to centrifugal pumps.介绍了40年前， AODD泵出现了一些革新，并提供一个有趣的sealless ，流离失所替代离心泵。 AODD pumps are not always the first choice in pump selection, yet they have found applications in a wide range of industries. AODD水泵并不总是首选泵的选择，但他们已经发现的应用范围广泛的行业。
These include chemicals, food processing, paints, electronics, construction, industrial maintenance, utilities, processing, wastewater and sludge processing, and mining.这些措施包括化学品，食品加工，涂料，电子，建筑，工业维修费，水电费，处理，废水及污泥处理，和采矿业。 With interesting variations on design principles and new diaphragm designs being随着有趣的变化对设计原则和设计新的隔膜正在
introduced, these pumps offer a number of benefits that set them apart from alternative pumping methods.介绍，这些泵提供了一些好处，它们不同于其他抽水方法。
They are self priming, will run dry without damage and need no electricity.他们是自我启动，将干涸的损害和不需要电力。 Powered entirely from compressed air, they本站完全由压缩空气，他们
can be used in a number of applications where electricity is not available or must not be used, such as hazardous or explosive environments or at remote sites.可在一些应用场合的电力无法使用或不能使用，如有害或爆炸性环境中或在远程站点。 AODD pumps come in a variety of sizes, shapes and materials of manufacture. AODD泵有多种尺寸，形状和材料的制造。
How the AODD pump works 如何AODD泵厂
The basic principle of operation of the AODD pump is shown的基本原则运作的AODD泵表明 here这里 . 。
