| 摘要 |
An integrally molded plastic sump basin formed with two distinct portions including a constant depth, shallow dry well at the top defining a controls area that is isolated from a varying depth wet well below, said wet well defining a pump chamber. All electronic controls, level sensor controls and valve extension control are situated in the non-hazardous dry well while pump(s) and associated piping are contained within the potentially hazardous wet well part of the basin. The sump basin may be formed with a drop inlet opening for sewage entry that enhances installation flexibility and provides more efficient processing of sewage entering the basin.
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