Professional submersible pump in cast-iron for heavy sewage water, 4 poles, 51kW,
Max head: 52 m,
Max capacity: 9.000 L/min


Pump in cast-iron with single-channel impeller. This kind of impeller grants a good free passage for the solid and fibrous parts contained into the water but it gives also an higher flow and head than the "vortex" impeller. This model with an heavy duty construction, double mechanical seals and 1450 rpm motor can be used to pump heavy sewage water.


The VORTEX 6800 is usually installed into big block of flats' cellars to drain the dirty water or in public sewage water nets. This model is also often used in farms to pump out the manure of the stables, in industrial plants, in sewage water treatment plants, in sludges 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: 20m



Performance curve:


Model Head (m)
16 20 24 28 32 36 40 44
VORTEX 6800 L/min 9000 8700 7700 6740 5630 4500 3380 2250
m3/h 540,0 522,0 462,0 404,4 337,8 270,0 202,80 135,0
L/s 150,00 145,00 128,33 112,33 98,83 75,00 53,33 37,50


















Technical characteristics:

Outlet 6" - DN 150 horizontal flanged
Solid passage 130mm
Impeller Single-channel impeller
Mechanical seal

Double mechanical seal in oil chamber. The lower one in silicum carbide / silicum carbide / Viton, the upper one in silicum carbide / silicum carbide / Viton.

Motor Dry. 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 7x10mm2 + 5x1mm2 including thermal probe and conductivity probe, without plug

Capacitor -
IP 68



Electric characteristics:

Model        Power        Nos. poles R.p.m. Voltage Ampere
VORTEX 6800  68HP - 51kW 4 1450  400-690V/50Hz/3 98,6 - 56,9 A




Impeller            Cast-iron GG 25                                                                            
Pump cover Cast-iron GG 25
Motor case Cast-iron GG 25
Pump body Cast-iron GG 25
Pump support Galvanized iron
Motor shaft Inox AISI 420
Packing set NBR



Weight and dimensions:



Model                  Outlet                                   Dimensions (mm)                          Weight  
flanged A B C D E F (kg)
VORTEX 6800 6" - DN 150 1190 850 345 980 730 1310 600




Connections 6"-DN 150 counterflange
DN 150 90° coupling hoses in cast-iron with flange
Coupling foot MODEL 6-DN150VTX1500-6800: automatic coupling foot with DN150 connection for VORTEX 1500-6800 
No-return valve Professional ball check valve flanged 6"-DN150 in cast-iron
Float-switch 10 or 20 metres cable float-switch to be connected to an electric board
Electric board Professional electric board model F1-68-3. This electric board provides a manual reset thermal protection to protect the motor of the pump and it permits the connection of a float-switch. Moreover this electric board has a control of lack or invertion of phases. The connection of the three-phase pump to an electric board is mandatory.



VORTEX 6800 ENG - REV. 1.0 - 01/08/2020

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