VORTEX 4" Electric ROV Dredge

Maximize diver bottom time.

General Specifications:

PLUG DIRECTLY INTO SAAB LEOPARD ROV (ask for details)

Debris removal of at least 22 m3/hr, 50 ton/hr, 10% solids by volume and tested using Magnetite rocks 40 to 100mm diameter.
Venturi inner diameter [mm] 100 mm
Rated maximum stone size 98 mm
Water pump flow = 55 m3/hr plus
Suction hose diameter 4 in / (100 mm)
Exhaust hose diameter 4 in / (100 mm)
Inlet suction hose length custom length
Exhaust throw length: 6 mtr - but it is best to keep the inlet hose longer due to exhaust back pressure reducing performance of ALL venture type dredge units.
The current draw on this motor which is 15kW 20HP 2 Pole 3000V 60Hz is 3.7 amps.
Coupling compensator - YES
Motor compensator - YES
Operating depths unrestricted
Operate pump in air - YES
Flotation - optional
Available suction at inlet Standard is 64 kpa plus
Optional Jetter nozzle water pressure = 60psi plus (4.1 Bar plus)

Vortex 4" Electric ROV Dredge Info Download Manual

Dredging in action

We offer a wide range of dredging solutions to suit most deep sea applications. The below graph shows our current selection of dredge solutions from the Electric 2 1/2 inch, to the larger BLACK HOLE 8 inch dredge.

We can also tailor a dredge solution to specifically suit your hydraulic supply if by chance your requirements are not covered by our extensive range. If you require a custom dredging solution please contact us directly.

Tornado 4" Dredge MkII

With a proven suction inlet vacuum up to 29.5in/hg (100kpa), the patented Vortex 4in T-100 Tornado Dredge is designed for subsea excavation and disposal of seabed materials up to 99mm in size.

Vortex 4" Dredge Pump

The most powerful 4-inch ROV and diver dredge in the world at 97kpa (28in/hg) vacuum has removal rate performance more commonly seen in 6-inch dredges.

Hurricane 6" Dredge

With a suction inlet vacuum up to 15.3in/hg (52kpa), the patented Vortex 6in Hurricane Dredge is designed for subsea excavation and disposal of seabed materials up to 149mm in size.

Why is Vortex Dredge Superior to other ROV Units?

Vortex dredges have been designed to combine high suction values and high water volumes to tear up sticky soils with very high suction then keep it flowing with high water volume. Powerful, simple, effective.

Example: Getting a "RIDICULOUSLY THICK MILKSHAKE" ® ™ to move through a straw is similar to dredging a very sticky seabed and suction is key because if you drive a suction hose deep into sticky mud the water flow in the suction hose will often stall and the hose is essentially filled with a 'plug' of mud and only high suction will clear the hose. Once the hose is clear then water flow takes over. Suction does the work and water flow continues the work done.

VORTEX performance figures DO NOT have a small print clause with an Asterix symbol next to figures which would represent "best case Scenario" removal rates as opposed to actual removal rates.

VORTEX removal rates are ACTUAL removal rates as seen with actual material moved using Magnetite black iron sand and rocks weighing 2.375kg per liter as to the sample product.