Submersible pump in cast-iron for sewage water, 2 poles, 2.2kW,
Max head: 13 m,
Max capacity: 700 L/min


Pump in cast-iron with "vortex" impeller. When the impeller turns, it creates a vortex pushing the water through the pump body. As the impeller is positioned in the upper part of the pump body it permits a wide free passage for the solid parts contained into the water. Thanks to its heavy duty construction, the double indipendent mechanical seals and the top quality oil bathed motor the VORTEX 300 can be used to pump sewage water and manure.

In case an electrical problem occurs, the reparation of the pump is extremely easy because the electric connections are positioned under the cover and completely isolated from the motor; so if some water enters into the pump from a cut in the cable the motor will be safe.


The VORTEX 300 is usually installed into block of flats' cellars to drain the rain water or the domestic sewage water but this model is also often used in farms to pump out the manure of the stables, in industrial plants, in sewage water treatment plants, etc. This model cannot be used to pump water containing stones.

Operation conditions

Max liquid temperature: 40 °C (104 °F)

pH: 6-10

Max density < 1100 kg/m³

Max immersion depth: 5m



Performance curve:

Model Head (m)
2 3 4 5 6 7 8 9 10 11 12
VORTEX 300 L/min 700 655 620 570 520 465 390 335 250 165 70
m3/h 42,0 39,3 37,2 34,2 31,2 27,9 23,4 20,1 15,0 9,9 4,2
L/s 11,67 10,92 10,33 9,50 8,67 7,75 6,50 5,58 4,17 2,75 1,17



Technical characteristics:

Outlet 3" - DN 80 horizontal flanged
Solid passage 55mm
Impeller Back open impeller "vortex" type.
Mechanical seal Double indipendent mechanical seal in oil chamber. The lower one in silicum carbide / silicum carbide / NBR, the upper one in ceramic / graphite / NBR. 
Motor Oil bathed. Insulation class: F
Motor protection By a fused remote isolator switch at customer's care (see optional electric board)

The pump is supplied without float-switch


10 meters cable H07RNF 4G1.5 without plug

Capacitor -
IP 68



Electric characteristics:

Model            Power             Nos. poles R.p.m.  Voltage  Ampere 
VORTEX 300 3.0 HP - 2.2kW 2 2850 400V/50Hz/3 5,6 A




Impeller              Cast-iron GG 20                                                                
Pump cover Cast-iron GG 20
Motor case Cast-iron GG 20
Pump support Cast-iron GG 20
Pump body Cast-iron GG 20
Motor shaft Inox AISI 304
Packing set NBR



Weight and dimensions:




Model                   Outlet                  Dimensions (mm)              Weight 
flanged A B C D E (kg)
VORTEX 300 3" - DN 80 525 235 295 255 550 39




Connections 3"-DN 80 counterflange
90° zinc-plated curve 3"
Coupling foot MODEL 2-DN80VTX300: automatic coupling foot with DN80 connection for VORTEX 300 
No-return valve Professional ball check valve flanged 3"-DN80 in cast-iron
Float-switch 10 or 20 metres cable float-switch to be connected to an electric board
Electric board The electric board model F6-0.5/10-3 provides a manual reset thermal protection to protect the motor of the pump and it permits the connection of a float-switch. The connection of the three-phase pump to an elctric board is mandatory.



VORTEX 300 ENG - REV. 2.0 - 15/10/2020

Comex Srl Società Unipersonale, Via delle Industrie, 42 - 31057 Silea (TV) - ITALY
P.I.: 00345210264 - Cap. Soc.: 50.000€ i.v.