隨著我國社會主義現(xiàn)代化建設事業(yè)的持續(xù)發(fā)展，給排水設備也在不斷提高，從過去老式的水泵加屋頂水箱到現(xiàn)在變頻供水（節(jié)能、去掉了易污染的屋頂水池）。近年來又一新型的供水設備出現(xiàn)——無負壓變頻恒壓供水，它是在變頻恒壓供水設備上發(fā)展起來的，它主要由無負壓調(diào)節(jié)罐、水泵、氣壓罐、智能控制系統(tǒng)等組成 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