Heavy-Duty Submersible Drainage Pump

KBZ range · cast iron · top discharge · 50/60 Hz

Duty point KBZ47.5: 48 m³/h · 30 m · 7.5 kW · 100 mm

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Key specifications

Power range: 1.5–15 kW (2–20 HP)
Capacity: up to 160 m³/h
Head: up to 57 m
Outlet: 50–150 mm (2″–6″)
Power supply: 3-phase 400 V ±10%, 50 Hz · 380 V ±10%, 60 Hz
Max. water depth: 25 m
Solids passage: 8.5–19.5 mm
Materials: Cast iron body · high-chrome impeller & inlet plate · AISI 420 stainless shaft · SiC mechanical seal
Applications: Civil engineering · mines & quarries · sewage treatment · general drainage

Model	Outlet (mm)	kW	HP	A	Rated m³/h	Rated head (m)	Max m³/h	Max head (m)	Passage (mm)
KBZ21.5	50	1.5	2	3.5	15	15	27	22	8.5
KBZ31.5	80	1.5	2	3.5	30	8	40	14.5	8.5
KBZ22.2	50	2.2	3	5.0	18	20	33	26	8.5
KBZ32.2	80	2.2	3	5.0	36	11	55	19	8.5
KBZ23.7	50	3.7	5	7.7	12	30	33	34	8.5
KBZ33.7	80	3.7	5	7.7	30	20	55	29	8.5
KBZ43.7	100	3.7	5	7.7	60	11.5	90	18.5	8.5
KBZ35.5	80	5.5	7.5	11.4	36	25	75	34	8.5
KBZ45.5	100	5.5	7.5	11.4	60	16	105	23	8.5
KBZ47.5	100	7.5	10	15	48	30	84	40	11.5
KBZ67.5	150	7.5	10	15	90	15	124.8	31	19.5
KBZ411	100	11	15	22	60	35	84	48.5	11.5
KBZ611	150	11	15	22	102	22	147	32	19.5
KBZ415	100	15	20	29.5	60	42	84	56	11.5
KBZ615	150	15	20	29.5	102	30	156	40	19.5

Full 50 Hz and 60 Hz performance curves for every model are in the curves file in Downloads below.

Rigid cast-iron motor housing and pump casing, built for long service in dirty water
High-chromium alloy impeller and inlet plate (≥58 HRC) resist abrasive wear
Pressure-resistant double mechanical seal — maximum water depth 25 m
Cooling passage between casing and motor: the pumped water cools the motor in continuous duty
Vertical top outlet and compact body fit narrow pits and well casings
Built-in thermal protector and a sealed cable entry that prevents leakage from the cable side
IP68 motor, class F insulation, 8 m cable; liquid temperature up to 40 °C

All available files for this model — ready to download.

Data sheet (PDF) — SP-KBZ · 74 KBDownload

Performance curves — 50 Hz & 60 Hz (PDF) — SP-KBZ · 396 KBDownload

Dimensions, section & parts (PDF) — SP-KBZ · 578 KBDownload

Send flow, head, liquid and voltage/frequency. You get a model recommendation with a quotation, usually within one working day.