
KBZ SERIES · SUBMERSIBLE DRAINAGE PUMP
Heavy-duty drainage.
One verified series page.
A cast-iron top-discharge pump range for civil engineering, mines, quarries, slurry service, sewage treatment and general drainage, with performance selections and current catalog records kept visibly separate.
● 19 performance selections · 19 current codes · 35 frequency records

POWER2.0-29.5 HP
MAX FLOW1056.7 GPM
MAX HEAD236.2 ft
MAX DEPTH25 m
Series Overview
Key specifications shared across the KBZ series.
Published data describes a rigid cast-iron motor and pump body, a pressure-resistant mechanical seal, and a semi-open high-chrome-alloy impeller working with a ductile-iron inlet plate. The motor-housing discharge channel supports cooling, while the top outlet reduces installation space.
Model Range
Compare hydraulic performance across all available power ratings.
The published footnote defines KBZ as three phase and KBZM as single phase. Each row below keeps the 50 Hz and 60 Hz hydraulic values together; KBZE is not inserted into this published table.

CURRENT CATALOG IMAGE
KBZ21.5 · KBZ22.2
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ23.7
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ31.5 · KBZ32.2
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ33.7
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ35.5
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ43.7
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ45.5
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ47.5
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ67.5
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ411
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ415
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ422
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ611
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ615
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZ622
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZM21.5
Content-distinct source asset.
CURRENT CATALOG IMAGE
KBZM31.5
Content-distinct source asset.| Selection | Outlet mm | Power HP | Rated current A | 50 Hz rated · max GPM / ft | 60 Hz rated · max GPM / ft | Passage mm |
|---|---|---|---|---|---|---|
| KBZM21.5 | 50 | 2.0 | 10 | 66.0 / 59.1 · 118.9 / 72.2 | 66.0 / 54.1 · 118.9 / 75.5 | 8.5 |
| KBZM31.5 | 80 | 2.0 | 10 | 132.1 / 26.2 · 176.1 / 47.6 | 132.1 / 29.5 · 198.1 / 49.2 | 8.5 |
| KBZ21.5 | 50 | 2.0 | 3.5 | 66.0 / 49.2 · 118.9 / 72.2 | 66.0 / 54.1 · 118.9 / 75.5 | 8.5 |
| KBZ31.5 | 80 | 2.0 | 3.5 | 132.1 / 26.2 · 176.1 / 47.6 | 132.1 / 29.5 · 198.1 / 49.2 | 8.5 |
| KBZ22.2 | 50 | 3.0 | 5.0 | 79.3 / 65.6 · 145.3 / 85.3 | 79.3 / 65.6 · 136.5 / 91.9 | 8.5 |
| KBZ32.2 | 80 | 3.0 | 5.0 | 158.5 / 36.1 · 242.2 / 62.3 | 132.1 / 42.7 · 206.9 / 67.3 | 8.5 |
| KBZ23.7 | 50 | 5.0 | 7.7 | 52.8 / 98.4 · 145.3 / 111.5 | 52.8 / 98.4 · 220.1 / 108.3 | 8.5 |
| KBZ33.7 | 80 | 5.0 | 7.7 | 132.1 / 65.6 · 242.2 / 95.1 | 132.1 / 72.2 · 242.2 / 101.7 | 8.5 |
| KBZ43.7 | 100 | 5.0 | 7.7 | 264.2 / 37.7 · 396.3 / 60.7 | 264.2 / 37.7 · 422.7 / 60.7 | 8.5 |
| KBZ35.5 | 80 | 7.4 | 11.4 | 158.5 / 82.0 · 330.2 / 111.5 | 158.5 / 82.0 · 303.8 / 124.7 | 8.5 |
| KBZ45.5 | 100 | 7.4 | 11.4 | 264.2 / 52.5 · 462.3 / 75.5 | 264.2 / 52.5 · 449.1 / 80.1 | 8.5 |
| KBZ47.5 | 100 | 10.1 | 15 | 211.3 / 98.4 · 369.8 / 131.2 | 211.3 / 98.4 · 352.2 / 134.5 | 11.5 |
| KBZ67.5 | 150 | 10.1 | 15 | 396.3 / 49.2 · 549.5 / 101.7 | 396.3 / 49.2 · 559.2 / 101.7 | 19.5 |
| KBZ411 | 100 | 14.8 | 22 | 264.2 / 114.8 · 369.8 / 159.1 | 264.2 / 114.8 · 369.8 / 159.1 | 11.5 |
| KBZ611 | 150 | 14.8 | 22 | 449.1 / 72.2 · 647.2 / 105.0 | 449.1 / 72.2 · 647.2 / 105.0 | 19.5 |
| KBZ415 | 100 | 20.1 | 29.5 | 264.2 / 137.8 · 369.8 / 183.7 | 264.2 / 137.8 · 369.8 / 187.0 | 11.5 |
| KBZ615 | 150 | 20.1 | 29.5 | 449.1 / 98.4 · 686.9 / 131.2 | 449.1 / 88.6 · 704.5 / 128.0 | 19.5 |
| KBZ422 | 100 | 29.5 | 41.5 | 343.4 / 196.8 · 682.4 / 236.2 | 343.4 / 196.8 · 739.7 / 236.2 | 12 |
| KBZ622 | 150 | 29.5 | 41.5 | 528.3 / 137.8 · 1056.7 / 173.9 | 528.3 / 131.2 · 1056.7 / 173.9 | 15 |
| Model | Outlet mm | A / A1 / B / D / H / W1 mm | N.W. / G.W. kg | Packing mm |
|---|---|---|---|---|
| KBZM21.5 | 50 | 235 / 190 / 613 / 216 / 582 / 120 | 42 / 46 | 695×265×275 |
| KBZM31.5 | 80 | 235 / 190 / 620 / 216 / 582 / 120 | 42 / 46 | 695×265×275 |
| KBZ21.5 | 50 | 235 / 173 / 543 / 216 / 503 / 120 | 36 / 40 | 620×265×275 |
| KBZ31.5 | 80 | 235 / 173 / 543 / 216 / 503 / 120 | 36 / 40 | 620×265×275 |
| KBZ22.2 | 50 | 235 / 173 / 543 / 216 / 503 / 120 | 39 / 43 | 620×265×275 |
| KBZ32.2 | 80 | 235 / 173 / 543 / 216 / 503 / 120 | 39 / 43 | 620×265×275 |
| KBZ23.7 | 50 | 293 / 216 / 628 / 252 / 629 / 150 | 63 / 68 | 710×320×295 |
| KBZ33.7 | 80 | 293 / 216 / 628 / 252 / 629 / 150 | 63 / 68 | 710×320×295 |
| KBZ43.7 | 100 | 293 / 216 / 628 / 252 / 629 / 150 | 63 / 68 | 710×320×295 |
| KBZ35.5 | 80 | 329 / 240 / 671 / 300 / 590 / 150 | 77 / 84 | 750×350×335 |
| KBZ45.5 | 100 | 329 / 240 / 671 / 300 / 590 / 150 | 77 / 84 | 750×350×335 |
| KBZ47.5 | 100 | 330 / 240 / 750 / 314 / 676 / 190 | 106 / 116 | 835×365×385 |
| KBZ67.5 | 150 | 330 / 240 / 790 / 314 / 676 / 190 | 108 / 119 | 865×365×385 |
| KBZ411 | 100 | 373 / 255 / 807 / 350 / 695 / 190 | 136 / 148 | 855×415×435 |
| KBZ611 | 150 | 373 / 255 / 807 / 350 / 695 / 190 | 139 / 150 | 855×415×435 |
| KBZ415 | 100 | 373 / 255 / 842 / 350 / 755 / 190 | 144 / 158 | 905×415×435 |
| KBZ615 | 150 | 373 / 255 / 842 / 350 / 755 / 190 | 146 / 160 | 905×415×435 |
| KBZ422 | 100 | 482 / 370 / 1112 / 421 / 1006 / 319 | 295 / 327 | 1280×570×585 |
| KBZ622 | 150 | 482 / 370 / 1136 / 421 / 1006 / 319 | 297 / 329 | 1280×570×585 |
Configurations
Available 50 Hz / 60 Hz electrical configurations for each model.
These exact KBZ and KBZM codes correspond to performance selections. Current values remain current-catalog facts; they do not overwrite published data tables above.
| Exact code | Hz | Phase / V | Power HP | Rated flow / head GPM / ft | Max flow / head GPM / ft | Outlet / passage mm | N.W. kg | Drawing |
|---|---|---|---|---|---|---|---|---|
| KBZ21.5 | 50 | 3 / 400 | 2.0 | 66.0 / 49.2 | 119.3 / 72.2 | 50 / 8.5 | 36 | View |
| KBZ21.5 | 60 | 3 / 380 | 2.0 | 66.0 / 54.1 | 119.8 / 75.8 | 50 / 8.5 | 36 | View |
| KBZ22.2 | 50 | 3 / 400 | 3.0 | 79.3 / 65.6 | 145.7 / 85.3 | 50 / 8.5 | 39 | View |
| KBZ22.2 | 60 | 3 / 380 | 3.0 | 79.3 / 65.6 | 137.8 / 91.9 | 50 / 8.5 | 39 | View |
| KBZ23.7 | 50 | 3 / 400 | 5.0 | 52.8 / 98.4 | 145.7 / 111.5 | 50 / 8.5 | 63 | View |
| KBZ23.7 | 60 | 3 / 380 | 5.0 | 52.8 / 98.4 | 218.4 / 108.6 | 50 / 8.5 | 63 | View |
| KBZ31.5 | 50 | 3 / 400 | 2.0 | 132.1 / 26.2 | 176.6 / 47.6 | 80 / 8.5 | 36 | View |
| KBZ31.5 | 60 | 3 / 380 | 2.0 | 132.1 / 29.5 | 198.6 / 49.5 | 80 / 8.5 | 36 | View |
| KBZ32.2 | 50 | 3 / 400 | 3.0 | 158.5 / 36.1 | 242.6 / 62.3 | 80 / 8.5 | 39 | View |
| KBZ32.2 | 60 | 3 / 380 | 3.0 | 132.1 / 42.7 | 211.8 / 67.6 | 80 / 8.5 | 39 | View |
| KBZ33.7 | 50 | 3 / 400 | 5.0 | 132.1 / 65.6 | 242.6 / 96.5 | 80 / 8.5 | 63 | View |
| KBZ33.7 | 60 | 3 / 380 | 5.0 | 132.1 / 72.2 | 246.1 / 101.4 | 80 / 8.5 | 63 | View |
| KBZ35.5 | 50 | 3 / 400 | 7.4 | 158.5 / 82.0 | 330.7 / 111.5 | 80 / 8.5 | 77 | View |
| KBZ35.5 | 60 | 3 / 380 | 7.4 | 158.5 / 82.0 | 301.6 / 124.7 | 80 / 8.5 | 77 | View |
| KBZ43.7 | 50 | 3 / 400 | 5.0 | 264.2 / 37.7 | 396.7 / 60.7 | 100 / 8.5 | 63 | View |
| KBZ43.7 | 60 | 3 / 380 | 5.0 | 264.2 / 37.7 | 427.1 / 60.7 | 100 / 8.5 | 63 | View |
| KBZ45.5 | 50 | 3 / 400 | 7.4 | 264.2 / 52.5 | 462.3 / 75.8 | 100 / 8.5 | 77 | View |
| KBZ45.5 | 60 | 3 / 380 | 7.4 | 264.2 / 52.5 | 458.3 / 80.4 | 100 / 8.5 | 77 | View |
| KBZ47.5 | 50 | 3 / 400 | 10.1 | 211.3 / 98.4 | 369.8 / 130.9 | 100 / 11.5 | 106 | View |
| KBZ47.5 | 60 | 3 / 380 | 10.1 | 211.3 / 98.4 | 349.1 / 134.2 | 100 / 11.5 | 106 | View |
| KBZ67.5 | 50 | 3 / 400 | 10.1 | 396.3 / 49.2 | 550.8 / 101.4 | 150 / 19.5 | 108 | View |
| KBZ67.5 | 60 | 3 / 380 | 10.1 | 396.3 / 49.2 | 560.5 / 100.1 | 150 / 19.5 | 108 | View |
| KBZ411 | 50 | 3 / 400 | 14.8 | 264.2 / 114.8 | 370.3 / 159.4 | 100 / 11.5 | 136 | View |
| KBZ411 | 60 | 3 / 380 | 14.8 | 264.2 / 114.8 | 368.5 / 161.1 | 100 / 11.5 | 136 | View |
| KBZ415 | 50 | 3 / 400 | 20.1 | 264.2 / 137.8 | 369.4 / 185.0 | 100 / 11.5 | 144 | View |
| KBZ415 | 60 | 3 / 380 | 20.1 | 264.2 / 137.8 | 368.1 / 186.3 | 100 / 11.5 | 144 | View |
| KBZ422 | 50 | 3 / 400 | 29.5 | 352.2 / 196.8 | 682.4 / 235.6 | 100 / 12 | 295 | View |
| KBZ611 | 50 | 3 / 400 | 14.8 | 449.1 / 72.2 | 647.7 / 106.0 | 150 / 19.5 | 139 | View |
| KBZ611 | 60 | 3 / 380 | 14.8 | 449.1 / 72.2 | 651.2 / 106.3 | 150 / 19.5 | 139 | View |
| KBZ615 | 50 | 3 / 400 | 20.1 | 449.1 / 98.4 | 686.4 / 130.9 | 150 / 19.5 | 146 | View |
| KBZ615 | 60 | 3 / 380 | 20.1 | 449.1 / 88.6 | 696.1 / 128.0 | 150 / 19.5 | 146 | View |
| KBZ622 | 50 | 3 / 400 | 29.5 | 528.3 / 137.8 | 1056.7 / 182.4 | 150 / 15 | 297 | View |
| KBZM21.5 | 50 | 1 / 220 | 2.0 | 66.0 / 49.2 | 122.0 / 73.5 | 50 / 8.5 | 42 | View |
| KBZM21.5 | 60 | 1 / 115 | 2.0 | 66.0 / 54.1 | 118.0 / 75.8 | 50 / 8.5 | 42 | View |
| KBZM31.5 | 50 | 1 / 220 | 2.0 | 132.1 / 26.2 | 177.4 / 47.9 | 80 / 8.5 | 42 | View |
Current 60 Hz records are not listed for KBZM31.5, KBZ422 or KBZ622. Examples of source differences: Published KBZ622 lists 173.9 ft maximum head, while the current 50 Hz record lists 182.4 ft; current records also use decimal-resolved maxima for several codes.
Construction & materials
High-chrome impeller inside a cast-iron body.
Published data separates seal construction by motor power: SiC-SiC / carbon-SiC at 2.2 kW and below, and SiC-SiC / SiC-SiC at 3.7 kW and above.
- Discharge connection
- Cast iron
- Handle
- Rubber & steel
- Motor / pump body
- Cast iron
- Impeller
- High chrome alloy
- Inlet plate
- Ductile iron
- Strainer
- Steel
- Rotor shaft
- AISI 420 stainless steel
- Bearings
- Ball bearing
KBZ FAQ
Model grouping and source boundaries.
How many KBZ performance selections are on this page?
The published data has 19 selection rows under one KBZ Contents item: 17 three-phase KBZ codes and two single-phase KBZM codes.
Are KBZE codes included on this KBZ page?
No. KBZE is a separate Contents item in the published data and has its own product page for intelligent-controller variants.
Which published frequencies are missing from the current catalog?
Published data publishes 60 Hz data for KBZM31.5, KBZ422 and KBZ622, but the current catalog has no matching 60 Hz records for those three codes.
Why can current KBZ values differ from published data table?
Published data tables and current catalog are separate sources. Current records sometimes publish decimal-resolved values or different maxima, so both are displayed without silently replacing one source with the other.
What materials does the KBZ published specify?
Published data specifies a cast-iron motor and pump body, high-chrome-alloy semi-open impeller, ductile-iron inlet plate and steel strainer.
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