FSM SERIES · SUBMERSIBLE DRAINAGE PUMP
Drain muddy water.
Keep flow moving.
A semi-vortex drainage platform with a shaft-mounted agitator for civil engineering, construction sites, basements, utility pits, rainwater, muddy water and higher-viscosity liquids.
● 0.4-1.5 kW · 10 models · 20 configurations
POWER0.5-2.0 HP
MAX FLOW145.3 GPM
MAX HEAD78.7 ft
PASSAGE6 mm
Series Overview
Key specifications shared across the FSM series.
The semi-vortex impeller minimizes clogging while the shaft-mounted agitator reduces air lock and keeps settled solids moving toward the inlet. Published data specifies water up to 40°C, pH 6.5-8.5, IP68 protection, class F insulation, an 8 m cable and immersion up to 10 m.
Model Range
Compare hydraulic performance across all available power ratings.
Published data keeps FS, FSM and float-switch suffixes inside one FSM performance block. FSME is a separate Contents item and is excluded from this page even though the catalog shares its series field.
CURRENT CATALOG IMAGE
FSM2.4 / FS2.4
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM2.4F
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM2.75 / FS2.75
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM2.75F
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM3.75 / FS3.75
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM3.75F
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM21.1 / FSM21.5
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM21.1F / FSM21.5F
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM31.1 / FSM31.5
One of ten content-distinct images assigned to current FSM records.
CURRENT CATALOG IMAGE
FSM31.1F / FSM31.5F
One of ten content-distinct images assigned to current FSM records.| Performance row | Power HP | Outlet mm | 50 Hz rated / max GPM / ft | 60 Hz rated / max GPM / ft | Passage mm | N.W. kg |
|---|---|---|---|---|---|---|
| FS(M)2.4(F) | 0.5 | 50 | 30.8 / 26.2 55.5 / 39.4 | 30.8 / 26.2 55.5 / 39.4 | 6 | 13.5 |
| FS(M)2.75(F) | 1.0 | 50 | 44.0 / 36.1 70.4 / 59.1 | 44.0 / 36.1 66.0 / 62.3 | 6 | 16.5 |
| FS(M)3.75(F) | 1.0 | 80 | 52.8 / 32.8 79.3 / 55.8 | 52.8 / 32.8 79.3 / 59.1 | 6 | 18 |
| FS(M)21.1(F) | 1.5 | 50 | 52.8 / 45.9 110.1 / 62.3 | 52.8 / 45.9 110.1 / 62.3 | 6 | 18.5 |
| FS(M)31.1(F) | 1.5 | 80 | 52.8 / 45.9 132.1 / 62.3 | 52.8 / 45.9 132.1 / 62.3 | 6 | 18.5 |
| FS(M)21.5(F) | 2.0 | 50 | 66.0 / 52.5 123.3 / 72.2 | 66.0 / 55.8 123.3 / 78.7 | 6 | 20.5 |
| FS(M)31.5(F) | 2.0 | 80 | 66.0 / 52.5 145.3 / 72.2 | 66.0 / 55.8 145.3 / 78.7 | 6 | 20.5 |
Published slash values are separated into 50 Hz and 60 Hz columns here. Current catalog decimals remain separate below.
Configurations
Available 50 Hz / 60 Hz electrical configurations for each model.
Counted page codes are the FS/FSM base forms (10 codes × both frequencies = 20 records). Single-phase models can be configured with a float switch; float codes (FSM2.4F, FSM2.75F, FSM3.75F, FSM21.1F, FSM31.1F, FSM21.5F, FSM31.5F) are not separate table rows. The table preserves exact codes, electrical supply, duty points, maximum points, outlets, cable length and model-specific drawing links in server-rendered HTML.
| Exact code | Hz | Phase / V | Power HP | Rated flow / head GPM / ft | Max flow / head GPM / ft | Outlet / passage mm | Cable m | Drawing |
|---|---|---|---|---|---|---|---|---|
| FS2.4 | 50 | 3 / 380 | 0.5 | 30.8 / 26.2 | 55.9 / 39.4 | 50 / 6 | 8 | View |
| FS2.4 | 60 | 3 / 208 | 0.5 | 30.8 / 26.2 | 56.4 / 39.4 | 50 / 6 | 8 | View |
| FSM2.4 | 50 | 1 / 220 | 0.5 | 30.8 / 26.2 | 55.9 / 39.4 | 50 / 6 | 8 | View |
| FSM2.4 | 60 | 1 / 115 | 0.5 | 30.8 / 26.2 | 55.9 / 39.4 | 50 / 6 | 8 | View |
| FS2.75 | 50 | 3 / 380 | 1.0 | 44.0 / 36.1 | 70.4 / 59.1 | 50 / 6 | 8 | View |
| FS2.75 | 60 | 3 / 380 | 1.0 | 44.0 / 36.1 | 66.5 / 59.1 | 50 / 6 | 8 | View |
| FSM2.75 | 50 | 1 / 220 | 1.0 | 44.0 / 36.1 | 70.9 / 59.1 | 50 / 6 | 8 | View |
| FSM2.75 | 60 | 1 / 115 | 1.0 | 44.0 / 36.1 | 65.6 / 62.0 | 50 / 6 | 8 | View |
| FS3.75 | 50 | 3 / 380 | 1.0 | 52.8 / 32.8 | 79.3 / 55.8 | 80 / 6 | 8 | View |
| FS3.75 | 60 | 3 / 380 | 1.0 | 52.8 / 32.8 | 78.8 / 55.8 | 80 / 6 | 8 | View |
| FSM3.75 | 50 | 1 / 220 | 1.0 | 52.8 / 32.8 | 79.3 / 55.8 | 80 / 6 | 8 | View |
| FSM3.75 | 60 | 1 / 115 | 1.0 | 52.8 / 32.8 | 79.3 / 58.4 | 80 / 6 | 8 | View |
| FSM21.1 | 50 | 1 / 220 | 1.5 | 52.8 / 45.9 | 110.5 / 62.3 | 50 / 6 | 8 | View |
| FSM21.1 | 60 | 1 / 115 | 1.5 | 52.8 / 45.9 | 110.1 / 62.3 | 50 / 6 | 8 | View |
| FSM31.1 | 50 | 1 / 220 | 1.5 | 52.8 / 45.9 | 132.1 / 62.3 | 80 / 6 | 8 | View |
| FSM31.1 | 60 | 1 / 115 | 1.5 | 52.8 / 45.9 | 130.8 / 62.3 | 80 / 6 | 8 | View |
| FSM21.5 | 50 | 1 / 220 | 2.0 | 66.0 / 52.5 | 122.8 / 72.2 | 50 / 6 | 8 | View |
| FSM21.5 | 60 | 1 / 115 | 2.0 | 66.0 / 55.8 | 123.7 / 78.7 | 50 / 6 | 8 | View |
| FSM31.5 | 50 | 1 / 220 | 2.0 | 66.0 / 52.5 | 144.9 / 72.2 | 80 / 6 | 8 | View |
| FSM31.5 | 60 | 1 / 115 | 2.0 | 66.0 / 55.8 | 145.3 / 78.7 | 80 / 6 | 8 | View |
Published data rounds family maximum points such as 55.5 GPM, 70.4/66.0 GPM and 123.3/145.3 GPM. Current catalog records retain values including 55.9, 70.9, 65.6, 122.8, 123.7, 144.9 and 145.3 GPM. Confirm the approved frequency curve before quotation.
Construction & materials
Semi-vortex hydraulics with an integral agitator.
The material stack follows the FSM published construction page. Exact supplied configuration remains subject to quotation review.
- Pump body
- Cast iron
- Impeller
- Ductile iron
- Agitator
- Stainless steel
- Shaft / sleeve
- AISI 420 stainless steel
- Mechanical seal
- Ceramic-SiC / carbon-ceramic
- Cable
- H07RN-F
FSM FAQ
Series and configuration boundaries.
Why are the FS and FSM configurations on one page?
Published data defines one FSM series block with seven hydraulic rows. FS identifies three phase, FSM single phase, and an F suffix a single-phase float-switch configuration.
Why is FSME not included on this page?
Published data Contents page lists FSME as a separate intelligent drainage-pump series on pages 05-06. Although the current catalog stores FSME under the FSM series field, those records are deliberately excluded here.
How many current FSM configurations are published?
After excluding FSME, counted page codes are the FS/FSM base forms (10 codes, 20 frequency records). Matching F float-switch codes remain outside that count.
Are three-phase FS versions available at every power?
Published data nomenclature allows FS versions, but the current English catalog publishes three-phase FS records only for the 0.4 kW and 0.75 kW hydraulic rows. Confirm availability before quotation.
Why do some maximum points contain decimals?
Published data table uses rounded family values while current records preserve model- and frequency-specific decimals. Keep the chosen frequency curve authoritative for selection and quotation.
Have a required flow and head?