
100U...K-100 4P · VORTEX SUBMERSIBLE SEWAGE PUMP
100U...K-100 4-pole vortex pump
one published performance block covering 3.7-7.5 kW with three exact model codes and six current 50/60 Hz configurations.
● 3.7-7.5 kW · 3 models · 6 configurations (50/60 Hz)

Series Overview
Key specifications shared across the 100U...K-100 series.
This 100 mm U-K block covers residential, agricultural, industrial, flood-control and sanitary-sewer duties. Published data specifies vortex hydraulics, water up to 40°C, pH 6-10, a DN100 PN6/PN10 radial flange outlet and a 100 mm solids passage. North American pages show motor power in HP, flow in GPM and head in ft.
Model Range
Compare hydraulic performance across all available power ratings.
Each frequency cell shows published rated flow/head and maximum flow/head in GPM/ft. Current catalog values remain in the configuration table below.
| Performance row | Power HP | Outlet mm | 50 Hz rated / max GPM / ft | 60 Hz rated / max GPM / ft | Passage mm | N.W. kg |
|---|---|---|---|---|---|---|
| 100U43.7K-100 | 5.0 | 100 | 264.2 / 26.2 506.3 / 36.1 | 264.2 / 26.2 484.3 / 36.1 | 100 | 75 |
| 100U45.5K-100 | 7.4 | 100 | 352.2 / 29.5 638.4 / 42.7 | 352.2 / 29.5 594.4 / 49.2 | 100 | 104 |
| 100U47.5K-100 | 10.1 | 100 | 475.5 / 32.8 726.5 / 49.2 | 475.5 / 32.8 686.9 / 59.1 | 100 | 112 |
Published data values remain visible above. The conflicting 60 Hz rated head for 100U45.5K-100 is disclosed below rather than silently replaced.

CURRENT CATALOG IMAGE
100U43.7K-100
One of two content-distinct images assigned to current English catalog records.
CURRENT CATALOG IMAGE
100U45.5K-100 / 100U47.5K-100
One of two content-distinct images assigned to current English catalog records.Configurations
Available 50 Hz / 60 Hz electrical configurations for each model.
Every exact code has one 50 Hz and one 60 Hz catalog record. Phase, voltage and frequency remain visible configuration fields.
| Exact code | Hz | Phase / V | Catalog power HP | Rated flow / head GPM / ft | Max flow / head GPM / ft | Cable m | Drawing |
|---|---|---|---|---|---|---|---|
| 100U43.7K-100 | 50 | 3 / 400 | 5.0 | 264.2 / 26.2 | 506.3 / 37.1 | 10 | View |
| 100U43.7K-100 | 60 | 3 / 220 | 5.0 | 264.2 / 26.2 | 486.1 / 35.8 | 10 | View |
| 100U45.5K-100 | 50 | 3 / 400 | 7.4 | 352.2 / 29.5 | 638.4 / 43.3 | 10 | View |
| 100U45.5K-100 | 60 | 3 / 380 | 7.4 | 352.2 / 32.8 | 596.6 / 49.2 | 10 | View |
| 100U47.5K-100 | 50 | 3 / 400 | 10.1 | 475.5 / 32.8 | 726.5 / 48.9 | 10 | View |
| 100U47.5K-100 | 60 | 3 / 380 | 10.1 | 475.5 / 32.8 | 686.9 / 58.7 | 10 | View |
For 100U45.5K-100 at 60 Hz, published data standard point is 352.2 GPM at 29.5 ft while the current English catalog record is 352.2 GPM at 32.8 ft. Minor decimal differences also occur at several maximum points. Confirm the approved curve before quotation.
Representative catalog drawing · 100U47.5K-100 · shared by 50/60 Hz recordsConstruction & installation
Four-pole vortex hydraulics, three documented installation forms.
- Pump body
- Cast iron
- 4P impeller
- Ductile iron
- Shaft
- AISI 304 stainless steel
- Mechanical seal
- SiC-SiC / carbon-ceramic
- Motor protection
- Built in at 7.5 kW and below
- Installation
- R soft pipe, Y hard pipe, Z auto-coupled
SOURCE & REVIEW
The named table block defines this page.
50 Hz published
Shared introduction and construction; page 4 selection block, page 10 detailed curve/data, and pages 14-16 installation dimensions.
60 Hz published
The same three hydraulic rows with separate 60 Hz performance and electrical tables.
Current catalog
Six K/SK records, two content-distinct product images and three content-distinct dimension drawings. The 60 Hz rated-head conflict remains subject to confirmation.
100U...K-100 4P FAQ
Configuration questions answered from evidence.
Why are the 100U...K-100 4P models on one page?
The 50 Hz and 60 Hz published books each define one named 100U...K-100 4P performance block with three hydraulic rows. The frequency records remain configurations inside that group.
Which exact model codes are included?
The group contains 100U43.7K-100, 100U45.5K-100 and 100U47.5K-100. Each code has one current 50 Hz record and one current 60 Hz record.
Why does the 60 Hz rated head for 100U45.5K-100 differ?
The 60 Hz published lists a standard point of 352 GPM at 29.5 ft. The current English catalog record lists 352 GPM at 32.8 ft. Confirm the approved 60 Hz curve before quotation.
How do published data maximum points change by frequency?
At 50 Hz the three maximum points are 506/36.1, 638/42.7 and 726/49.2. At 60 Hz they are 484/36.1, 594/49.2 and 687/59.1, in GPM/ft.
What installation forms are documented?
Published data documents R movable soft-pipe, Y hard-pipe and Z auto-coupled installation forms for this U-K range.
Continue from published data to a reviewed selection