Submersible Sewage Pumps

80mm Submersible Sewage Pumps with GAK-80 Coupling

Name: 80mm Submersible Sewage Pumps with GAK-80 Coupling
Brand: Haquan
SKU: WQ/QW

Model: WQ/QW

80mm WQ/QW submersible sewage pumps, 40-65m³/h across five flow-head combinations, with GAK-80 auto-coupling for factory sump stations.

Specifications

Flow Rate	40-65m³/h
Head	7-25m
Power	2.2-7.5kW
Inlet / Outlet Diameter	DN80
Material	Cast Iron, SS304, SS316L

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Product Overview

Five variants at this size cover a fairly wide spread of flow-to-head ratios, which makes 80mm a common size for buyers comparing options against a specific pipe run rather than picking off a single spec sheet entry.

Model	Flow (m³/h)	Head (m)	Power (kW)	Profile
QW-80-40-7	40	7	2.2	Low-head, tank overflow duty
WQ-80-43-13	43	13	3	Continuous-run factory
WQ-80-40-15	40	15	4	Medium head
WQ-80-60-13	60	13	5.5	Higher flow
WQ-80-65-25	65	25	7.5	High-flow, high-head

The low-head QW-80-40-7 needs one specific caution the others don’t: don’t let it idle continuously far below its rated head, since current draw climbs fast without enough pipeline resistance to work against. At the top of the range, the 7.5kW model draws enough current that cable cross-section deserves an actual calculation instead of a rule of thumb, particularly over longer runs to the control cabinet.