Self-priming centrifugal pump
CQJ505A-DP ningbo cacheng

' The COJ pumps are regarded as one of (he best surlace pumps for deep well in
walor priming. With two back lo back impollors to gain good performance in suction
and head output. It consists of two pumps connected in séries, one is ejector pump
and the other is centrifugal pump. The ejector pump is lowered in a 4" well and
connected to the centrifugal pump body by two pipes. For working princtple, please
rofor to tho pipo connection bolow.
• Usually, thèse pumps are used with a set of TANK-AUTO System inctude the tank, the pressure gauge. the pressure switch. the foot valve, etc.
The TANK-AUTO System is another most significant merit of this pump. which make the pumps more convenient for using. Thèse pumps are
suitable for pumping clean water and chemical nonaggressive fluid. They are extremen/ reliable. economical to use. in domestic applications.
• To ensure adéquate counter-pressure. It is atways better lo install a foot valve with a lilter on the suction end. Thèse pumps should be installed
in a covered area. protected against the weather.