High excavating efficiency is assured by optimal flow design and jet water assistance.

Drag Heads

State-of-the-art wide jet water assisted drag heads are available in a complete range of suction pipe sizes, varying from 350mm to 900 mm. High excavating efficiency is assured by optimal flow design and jet water assistance.

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Damen Dredge Pump

Dredge pumps

High efficiency Damen dredge pumps are available for both in board and submersed use. The wear resistant dredging pumps can be used for barge loading, dredging, mining and discharging. Easy installation and practical maintenance is assured due to the mechanical shaft seal.

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Practical retrofit of flexible outer pump casing.

DynaCover outer pump casing

Practical retrofit of flexible outer pump casing. The clamped-on innovative fibre cover prolongs the life time of the inner pump casing. The ultra-light and patented cover is essential in enhancing crew safety.

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For an effortless rotation of the lower trailing pipe and drag head, a turning gland is mounted below the hinge.

Turning Glands

For an effortless rotation of the lower trailing pipe and drag head, a turning gland is mounted below the hinge. The turning glands are heavy duty designs, rotating +&-30° around the pipe axis. The 2-parted glands turns on a cast graphite containing ring. Heavy duty welding neck flanges ensure efficient mounting.

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A cardan hinge, or double hinge, ensures movement in 2 axis.

Cardan Hinges

A trailing pipe is to be able to move effortlessly independent from the vessel. A cardan hinge, or double hinge, ensures movement in 2 axis. It moves away from the hopper’s side, and moves the lower pipe up and down. Using a heavy duty cardan hinge, the vessel and trailing pipe can move independently in swell reaching high performance levels. Angles can be monitored using dredging instrumentation.

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All valves are designed for the abrasive dredging environment, and are fitted out with rubber rings at the slide.

Dredge Valves

A large array of dredge valves is available, both for suction piping, as well as discharge piping at 6, 10 or 16 bar discharge pressure. All valves are designed for the abrasive dredging environment, and are fitted out with rubber rings at the slide. The rubber ring gate valves can be delivered with Bureau Veritas or Lloyds classification. Many valves are available from stock.

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A single hinge is made to enable the trailing pipe to move away from the vessel.

Single Hinges

A single hinge is made to enable the trailing pipe to move away from the vessel. It consists of heavy duty pipe pieces and hinge arms, which can be fitted out with an inclinometer. The mixture passes through a heavy duty wear resistant rubber flexible hose. The hinge is fitted out with welding neck flanges on both sides.

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For both in board and submerged dredge pumps, a degassing installation can be installed – for new builds as well as retrofits.

Degassing Systems

Gas trapped in layers of silt badly affects the efficiency of the dredge pump. For both in board and submerged dredge pumps, a degassing installation can be installed – for new builds as well as retrofits. The gas is extracted from the dredged mixture, ensuring a continuous and even dredging process.

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The monitors are mounted on the coaming and can therefore reach all tricky corners.

Jet Water Monitors

Efficient dredging means that during discharging all hopper cargo is to be pumped out. As material can be sticky, jet water monitors help to clean the hopper fully. The monitors are mounted on the coaming and can therefore reach all tricky corners.

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