TSHD Suction and Jetting
Drag arm suction, drag head jetting and deck flushing on a trailing suction hopper dredger.
How the system fits together
On a TSHD the drag arm moves with the sea while the pump pulls a vacuum through it, and the drag head is jetting at pressure at the same time. Two hoses, two completely different specifications, and the common mistake is selecting both on bore size.
What goes where
Drag arm suction
Suction hose rated -0.1 to 1.0 MPa, reinforced against collapse, with internal steel rings absorbing pump vibration before it reaches the arm mountings.
Drag head jetting
Jet water hose in 100-400 mm bore at 0.5-2.5 MPa, built around pressure capability rather than abrasion, in modular sections that integrate into the existing flushing system.
Deck pipework
Expansion joints taking up movement between fixed deck runs and damping vibration into the structure.
Hopper discharge
Discharge hose and floating line where the vessel pumps ashore, on flange drilling matched to the shore connection.
Products in this system
Suction Rubber Hose with Sandwich Flange
Collapse-resistant suction hose with rubber-lined sandwich flange, -0.1 to 1.0MPa, ID 100-1100mm.
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Jet Water Rubber Hose with Steel Flange
High-pressure jetting hose for TSHD drag heads and flushing systems. ID 100-400mm, 0.5-2.5MPa.
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Expansion Joint with Sandwich Flange
Short flexible pump-to-pipeline joint with sandwich flange, ID 100-1300mm, vacuum to 3MPa.
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Discharge Rubber Hose with Steel Flange
Steel-flanged discharge hose for floating, onshore and submerged slurry lines, ID 100-1100mm at 0.5-4.2MPa working pressure.
View specificationsQuote the system, not the parts
Send the vessel, the line layout and the flange standard already in service.