1.low noise three lobe roots blower 2.energy saving 3.purify water and air and other ... , flow strong, noise small, steadily reliable operation. Technical details:Air capacity: 1.22m3/min to 2.48m3/min.The pressure: 9.8Kpa ... filter silencers, anchor bolts, baseframe, safety valve, check valve, discharge pressure gauge, flexible connections, lubricant and etc.