Submersible Pumps Overview by Zoeller Engineered Products


Ejector pumps are required in those applications where wastewater can not flow to it’s point of destination by means of gravity at a velocity rate greater than 2 feet per second.
2 DESIGN STYLES:	1) vertical suspended type— motor is exposed outside of basin supported on the cover with an extended motor shaft connected to the pump housing and impeller which are located inside the basin. 2) close coupled submersibles— motor is connected directly to the pump housing and impeller with a short shaft and no part of the pump is exposed outside the basin.
These styles are available with either an explosion proof or non-explosion proof motor...often, an explosion proof motor is not practical but sometimes required by code.

4 MAJOR TYPES:	1) NON-CLOGS	have the ability to pump high gpm’s ... Solids handling capacity from 2" thru 4"... Lower head residential to municipal lift stations … Pumping everything from sanitary sewage to rainwater to a gravity sewer system...

	2) GRINDERS	pumps low flows against high heads... Grinds solids instead of passing them... Residential or commercial location... Often pumping to a pressure sewer system but also used in gravity sewers if high vertical lifts or long horizontal runs are present in system...

	3) EFFLUENT PUMP	pump used to move septic tank effluent... High head low flow pumping performance... 1/2" - 3/4" solids capacity... Used in septic tank systems to move effluent from the dosing chamber to either an on site treatment system or pressure sewer...

	4) SUMP PUMP	pump used for moving groundwater away from building foundations... Low flows against low heads... Minimal solids capacity...