{"id":2769,"date":"2026-07-02T06:42:37","date_gmt":"2026-07-02T06:42:37","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/trailing-suction-dredger-overflow-cylinder\/"},"modified":"2026-07-02T06:42:46","modified_gmt":"2026-07-02T06:42:46","slug":"trailing-suction-dredger-overflow-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/ru\/product\/trailing-suction-dredger-overflow-cylinder\/","title":{"rendered":"Trailing Suction Dredger Overflow Cylinder"},"content":{"rendered":"

<\/p>\n
\n Trailing Suction Dredger<\/span><\/p>\n

Trailing Suction Dredger Overflow Cylinder<\/h2>\n

The hopper fills with a slurry of water and sediment. The overflow cylinder raises and lowers a vertical tube \u2014 the relief tube \u2014 to set the water level. Lower the tube: water overflows earlier, carrying fine sediment away. Raise it: more water stays, heavier load. A 6-metre stroke gives the operator full control over cargo density.<\/p>\n

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\u2264280mm<\/span>Bore<\/span><\/div>\n
\u22646,000mm<\/span>Stroke<\/span><\/div>\n
900 KN<\/span>Pull Force<\/span><\/div>\n
32 MPa<\/span>Pressure<\/span><\/div>\n<\/p><\/div>\n<\/section>\n
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Technical Specifications<\/h2>\n
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\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/td>\nTrailing Suction Dredger Overflow Cylinder<\/td>\n<\/tr>\n
Features<\/td>\nProvide pulling force for lifting and lowering the relief tube<\/td>\n<\/tr>\n
Bore Diameter<\/td>\nUp to 280 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\nUp to 180 mm<\/td>\n<\/tr>\n
Stroke<\/td>\nUp to 6,000 mm<\/td>\n<\/tr>\n
Pulling Force<\/td>\nMaximum 900 KN<\/td>\n<\/tr>\n
Working Pressure<\/td>\nUp to 32 MPa<\/td>\n<\/tr>\n
Application<\/td>\nTrailing Suction Dredger<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n
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Why Overflow Height Controls Dredging Productivity<\/h2>\n
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\"Trailing<\/p>\n

When a TSHD dredges, the suction pipe delivers a slurry of water and sediment into the hopper. The sediment settles to the bottom; the excess water must be removed. The overflow tube \u2014 a vertical pipe inside the hopper \u2014 sets the maximum water level. Water above the tube rim flows over and out through the hull.<\/p>\n

Lowering the overflow tube reduces the water level, allowing excess water to drain earlier in the loading cycle. This increases the sediment concentration in the hopper (more tonnes of dry material per voyage) but also increases the rate of fine sediment loss through the overflow. Raising the tube retains more water but dilutes the cargo.<\/p>\n

The overflow cylinder’s 6,000 mm stroke gives the operator continuous adjustment across the full hopper depth \u2014 from maximum retention (tube fully raised) to rapid drainage (tube fully lowered). Optimising this balance can increase payload by 10\u201325% per voyage on the same vessel. Browse the offshore hydraulic cylinder<\/a> range for related TSHD products.<\/p>\n<\/section>\n

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Overflow Cylinder in the TSHD Hydraulic System<\/h2>\n
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The overflow cylinder is one of four main hydraulic cylinder types on a TSHD. Each serves a distinct role in the dredging cycle:<\/p>\n

\n
\n Heave Compensation (#5)<\/strong><\/p>\n

Absorbs wave motion to keep the draghead on the seabed at constant pressure.<\/p>\n<\/p><\/div>\n

\n Hanger (#6)<\/strong><\/p>\n

Deploys and recovers the suction pipe assembly from the hull.<\/p>\n<\/p><\/div>\n

\n Mud Door (#7)<\/strong><\/p>\n

Opens the hopper bottom for rapid bottom discharge of dredged material.<\/p>\n<\/p><\/div>\n

\n Overflow (#8) \u2190 this product<\/strong><\/p>\n

Controls the overflow tube height to optimise cargo density during loading.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

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Key Advantages of the Overflow Cylinder<\/h2>\n
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\"Trailing<\/p>\n