SAND 300

Submersible pump in cast-iron for sandy and drainage water, 2 poles, 2.2kW,
Max head: 21 m,
Max capacity: 670 L/min



Pump in cast-iron for drainage. The suction grid at the base permits to position the pump at the bottom of a pond or of a hole into the ground as the stones and other solid parts cannot be suck by the pump. Thanks to its heavy duty construction and the top quality oil bathed motor the SAND 300 is a pump ideal also for hard applications.

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.


Suitable for drainage water and sandy water. This model is much used by contractors by construction sites to drain water from foundations or to dewater small ponds.

Operation conditions

Max liquid temperature: 50 °C (122 °F)

pH: 6-10

Max density < 1100 kg/m³

Max immersion depth: 5m



Performance curve:


Model Head (m)
2 4 6 8 10 12 14 16 18 20
SAND 300 L/min 670 625 570 510 450 380 310 230 140 50
m3/h 40,2 37,5 34,2 30,6 27,0 22,8 18,6 13,8 8,4 3,0
L/s 11,17 10,42 9,50 8,50 7,50 6,33 5,17 3,83 2,33 0,83



Technical characteristics:

Outlet 3" - DN 80 horizontal flanged
Solid passage 5mm
Impeller Bi-channel open impeller
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
SAND 300    3.0HP - 2.2kW 2 2850 400V/50Hz/3 5,4 A




Impeller Cast-iron GG 20                                                            
Pump cover Cast-iron GG 20
Motor case Cast-iron GG 20
Pump body Cast-iron GG 20
Pump support 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)
SAND 300 3" - DN 80 525 210 295 255 550 41




Connections 3"-DN 80 counterflange
90° zinc-plated curve 3"
Coupling foot MODEL 2-DN80VTX300: automatic coupling foot with DN80 connection for SAND 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.



SAND 300 ENG - REV. 2.0 - 03/12/2018

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