A basement car park drains a surprising amount of rubbish into its sump: cloth, plastic, cigarette ends, wash-down silt, and whatever blows down the ramp. The sump usually sits at the lowest point of the building, so when its pump clogs, the water has nowhere to go but up into the parking deck.
The 80GNWQ35-15-3 is a solid choice for that sump — 35 m³/h at 15 m head, 3 kW, 80 mm outlet. The 48 HRC alloy cutter deals with the fibrous and plastic debris that a plain sump pump chokes on, and the heat-treated 3Cr13 impeller takes the grit and silt that always come with car-park water.
One habit worth building in: fit a coarse screen on the sump and check the cutter clearance (0.1–0.25 mm) once a year — do that and this pump is close to fit-and-forget. sales@haquanpump.com