Direction Reversing Valve

Maximize diver bottom time.

This tool is designed to reverse the flow through the Venturi to clear the suction hose in the event of debris blocking the suction hose. Simple to retrofit to all Vortex dredge systems via cam lock fittings.

Half Round Type Direction Reversing Valve

Reversing valve Weight in air:
3 inch = 10 lb (4.5kg)
4 inch = TBA
6 inch = TBA
Reversing valve dimensions:
3 inch = 10.2inch (260mm) long x 8.2 inch (210 mm) high x 7 inch (180mm) wide.
4 inch = TBA
6 inch = TBA
Hydraulic supply required to operate ball valve:
3 inch = 69 to 206 bar (1000 to 3000psi.), 14lpm (3.7 gpm) minimum flow
4 inch = TBA
6 inch = TBA
Hydraulic hoses
Two units: 4000mm long -4 jic female swivel.
Depth rating = 3000mtr plus
Inside diameter
3 inch (76mm),
4 inch (100mm)
6 inch (150mm)

Half Round Type Manual

Bladder Type Direction Reversing Valve
Simple to retrofit to all Vortex 4 inch dredge systems via industry standard cam locks.

Reversing valve Weight in air
27 lb (12.5kg)
Ball valve weight in air
8.8lb (4 kg)
Reversing valve dimensions
13 inch (338 mm) long x 7 inch (182 mm) diameter.
Hydraulic pressure required to operate ball valve
34 to 206 bar (500 to 3000psi.)
Depth rating – 3000mtr plus
Inside diameter
4 inch (100mm)

Bladder Type 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 4" 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" 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 6" 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.