Riser Flushing Pump

Maximize diver bottom time.

Introduction and assembly

Please find included two pumps which have been built specifically for the purpose of flushing a pipeline.

Each pump will need assembly with included outlet nozzle Item 1 and suction strainer Item 2 so the pump looks like this Fig 1. You can mount the outlet nozzle in which ever orientation suits your situation. Pump mounting brackets are also supplied.

The check valve Item 3 on the case drain is 100 psi and designed to counter act the high water pump pressures and prevent shaft seal failure. DO NOT remove this check valve. Simply connect case drain hose to the outlet fitting of this check valve and run case drain hose to tank as per normal.

Hydraulic requirement:

Pressure = 3000 psi (206 bar), Flow = 19.8 gpm (75 lpm)

Water pump performance:

11 l/sec @112psi water pump output pressure.

Water pump performance:

5.5 l/sec @ 120psi water pump output pressure.

Weight of pump:

43 kg in water

Inventory

Two pumps complete with case drain check valve
Two suction strainers with hard ware / bolts
Two outlet nozzles with hard ware / bolts
Two 3-inch female cam lock to two inch male BSPT adapters
Four individual aluminium pump brackets
Two sets of 3 meter long hydraulic hoses - comprising -8 pressure, -8 return, -6 case drain
Flow chart / performance chart for pumps
Two pumps will be supplied only upon request

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 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.