The series of pumps are new model produets developed by our company．which have rational configuration and long useful life。work with high efficiency and Less noise and do well in resisting cavitation. The TSWA seriesconsist of 5 varieties．that is 40 specs. The followings are their working range： Q(flux)=15-19m3/h，H(head)=17-247m，n(rev)=1450r/min T(temperature of llquids)≤80℃. The liquids should be clean water or similar to water in chemical and physical properties. The pumps a re especially adapted to water supply of air-eondltione r eauipped