随着我国社会主义现代化建设事业的持续发展，给排水设备也在不断提高，从过去老式的水泵加屋顶水箱到现在变频供水（节能、去掉了易污染的屋顶水池）。近年来又一新型的供水设备出现——无负压变频恒压供水，它是在变频恒压供水设备上发展起来的，它主要由无负压调节罐、水泵、气压罐、智能控制系统等组成 Along with the continuous development of the cause of socialist modernization construction of our country water supplyanddrainage equipment are constantly improving the conversion from the past pump plus the roof water tank water supply (such old-fashioned now removed easily polluted rooftop pool). In recent years, a new water supply equipment appear -- no