50U...K-50 2P · VORTEX SUBMERSIBLE SEWAGE PUMP
50U...K-50
2-pole vortex pump
one published performance block covering 0.45-1.5 kW with six exact model codes and 12 current 50/60 Hz configurations.
● 0.45-1.5 kW · 6 models · 12 configurations (50/60 Hz)
POWER0.6-2.0HPOUTLET50mmMAX FLOW127.7GPMMAX HEAD52.5ft
Series Overview
Key specifications shared across the 50U...K-50 series.
Published data defines a cast-iron vortex sewage pump for residential, commercial, agricultural, industrial, flood-control and sanitary-sewer duties. It specifies water up to 40°C, pH 6-10, a 50 mm radial flange outlet and a 50 mm solids passage for this product group. 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. S and SF configurations use the same hydraulic row.
| Performance row | Power HP | Outlet mm | 50 Hz rated / max GPM / ft | 60 Hz rated / max GPM / ft | Passage mm | Base N.W. kg |
|---|---|---|---|---|---|---|
| 50U2.45(S)K-50 | 0.6 | 50 | 52.8 / 16.4 83.7 / 26.2 | 52.8 / 16.4 83.7 / 26.2 | 50 | 20.5 |
| 50U2.8(S)K-50 | 1.1 | 50 | 66.0 / 19.7 101.3 / 36.1 | 66.0 / 19.7 96.9 / 36.1 | 50 | 21 |
| 50U21.5(S)K-50 | 2.0 | 50 | 79.3 / 32.8 127.7 / 49.2 | 79.3 / 32.8 127.7 / 52.5 | 50 | 25 |
The 1.07 HP maximum changes from 101/36.1 at 50 Hz to 96.9/36.1 at 60 Hz; the 2.01 HP maximum changes from 128/49.2 to 128/52.5 GPM/ft.
CURRENT CATALOG IMAGE
50U2.45K-50 / 50U2.45SK-50 / 50U2.8K-50 / 50U2.8SK-50
One of four content-distinct images shared across matching 50 Hz and 60 Hz records.
CURRENT CATALOG IMAGE
50U2.45SFK-50 / 50U2.8SFK-50
One of four content-distinct images shared across matching 50 Hz and 60 Hz records.CURRENT CATALOG IMAGE
50U21.5K-50 / 50U21.5SK-50
One of four content-distinct images shared across matching 50 Hz and 60 Hz records.
CURRENT CATALOG IMAGE
50U21.5SFK-50
One of four content-distinct images shared across matching 50 Hz and 60 Hz records.Configurations
Available 50 Hz / 60 Hz electrical configurations for each model.
Counted page codes are the K and SK forms (6 codes × both frequencies = 12 records). Single-phase models can be configured with a float switch; float codes (50U2.45SFK-50, 50U2.8SFK-50, 50U21.5SFK-50) are not separate table rows.
| Exact code | Control | Hz | Phase / V | Power HP | Rated flow / head GPM / ft | Max flow / head GPM / ft | Drawing |
|---|---|---|---|---|---|---|---|
| 50U2.45K-50 | Three-phase | 50 | 3 / 400 | 0.6 | 52.8 / 16.4 | 83.7 / 26.9 | View |
| 50U2.45K-50 | Three-phase | 60 | 3 / 480 | 0.6 | 52.8 / 16.4 | 83.7 / 26.2 | View |
| 50U2.45SK-50 | Single-phase | 50 | 1 / 220 | 0.6 | 52.8 / 16.4 | 83.7 / 26.9 | View |
| 50U2.45SK-50 | Single-phase | 60 | 1 / 115 | 0.6 | 52.8 / 16.4 | 83.7 / 26.2 | View |
| 50U2.8K-50 | Three-phase | 50 | 3 / 400 | 1.1 | 66.0 / 19.7 | 101.3 / 35.8 | View |
| 50U2.8K-50 | Three-phase | 60 | 3 / 380 | 1.1 | 66.0 / 19.7 | 96.9 / 35.8 | View |
| 50U2.8SK-50 | Single-phase | 50 | 1 / 220 | 1.1 | 66.0 / 19.7 | 101.3 / 35.8 | View |
| 50U2.8SK-50 | Single-phase | 60 | 1 / 115 | 1.1 | 66.0 / 19.7 | 96.9 / 35.8 | View |
| 50U21.5K-50 | Three-phase | 50 | 3 / 400 | 2.0 | 79.3 / 32.8 | 127.7 / 48.6 | View |
| 50U21.5K-50 | Three-phase | 60 | 3 / 380 | 2.0 | 79.3 / 32.8 | 127.7 / 52.5 | View |
| 50U21.5SK-50 | Single-phase | 50 | 1 / 220 | 2.0 | 79.3 / 32.8 | 127.7 / 48.6 | View |
| 50U21.5SK-50 | Single-phase | 60 | 1 / 115 | 2.0 | 79.3 / 32.8 | 127.7 / 52.5 | View |
Current catalog voltages are configuration-specific: all S/SF records are single-phase 220 V, while the three-phase records use the voltage shown per row. Catalog decimal curve endpoints remain unrounded; confirm voltage and duty point before quotation.
Representative catalog drawing · 50U21.5K-50 · shared by 50/60 Hz recordsConstruction & installation
Vortex hydraulics, three documented installation forms.
- Pump body / impeller
- Cast iron
- Shaft
- AISI 304 stainless steel
- Mechanical seal
- SiC-SiC / carbon-ceramic
- Motor protection
- Built in at 7.5 kW and below
- Optional sensors
- Thermal switch or PT100 with WIO
- Installation
- R soft pipe, Y hard pipe, Z auto-coupled
SOURCE & REVIEW
The named table block defines this page.
50 Hz published
Shared introduction, model description, materials and applications; page 3 selection block, page 5 detailed curve/data, and pages 14-16 installation dimensions.
60 Hz published
The same named product block and three hydraulic rows, with separate 60 Hz curve values and electrical tables.
Current catalog
Twelve K/SK records (SF float options kept outside the count), four content-distinct product images and six content-distinct dimension drawings. Certification marks in shared cover art are not asserted for an individual model.
50U...K-50 2P FAQ
Configuration questions answered from evidence.
Why are the 50U...K-50 2P models on one page?
The 50 Hz and 60 Hz published books each define one named 50U...K-50 2P performance block with three hydraulic rows. Single-phase, float-switch and frequency choices are configurations inside that product group, not separate product groups.
What do S and SF mean in a 50U...K-50 model?
Published data states that S means single phase and SF means single phase with a float switch. A code without S or SF is three phase. The six counted page codes are the K and SK forms; the matching float codes are 50U2.45SFK-50, 50U2.8SFK-50 and 50U21.5SFK-50.
How do 50 Hz and 60 Hz performance differ?
Published rated points stay at 52.8/16.4, 66/19.7 and 79.3/32.8 GPM/ft. Maximum flow/head is 101/36.1 at 50 Hz versus 423 GPM.9/36.1 at 60 Hz for the 1.07 HP selection, and 128/49.2 versus 128/52.5 for the 2.01 HP selection.
What solids can this 50 mm U-K range pass?
Published data and current catalog configurations list a 50 mm solids passage with a 50 mm outlet. Suitability still depends on the actual solids shape, fiber content and approved duty point.
Which installation methods are documented?
Published data provides R movable soft-pipe, Y hard-pipe and Z auto-coupled dimensions. It identifies continuous and lowest running water levels for each form.
Continue from published data to a reviewed selection