Floating Rubber Hose

Self-floating discharge hose with a buoyant interlayer, floats empty or working. ID 200-1100mm, 0.5-4.2MPa.

Specifications for Floating Rubber Hose
Product Name	Floating Rubber Hose
Inner Diameter (ID)	200-1100 mm
Length	5800 / 11800 mm
Working Pressure (WP)	0.5-4.2 MPa
Burst Pressure (BP)	1.5-12.6 MPa
Flange Type	Steel flange
Application	Connects with CSD/TSHD dredgers to transport mud, sand, water and other media
Origin	China

Get a quotation Email specifications

Specifications are supplied per order within the ranges shown. Send the flange drawing or the details of the section being replaced and the connection is machined to match.

Overview

A floating rubber hose carries the main discharge line across open water without pontoons. Instead of hanging buoyancy on the outside, the buoyancy is built into the wall: an inner lining, a reinforcement layer, a buoyant interlayer, an outer cover, and carbon steel flanges at both ends. The result is a hose that stays on the surface whether it is empty or full of slurry, which is what makes a long floating line practical to lay, move and recover.

Who it is for

Dredging contractors laying overwater discharge line who want the buoyancy integral to the hose rather than bolted on.

Key benefits

Buoyant interlayer keeps the hose afloat empty or working, with no external floats required
Highly wear-resistant natural rubber extends service life in demanding conditions
Inner high-strength steel rings absorb dredge pump vibration and pulsating pressure
Flexible body with flanged ends is easy to manoeuvre during operation
Stable floating performance maintained throughout the service life, not just when new

Problems it solves

What goes wrong without it

1

A conventional hose on a floating line needs separate floats, which add handling work, fastening points and things that can come loose in weather.

2

A line that sinks when empty has to be re-floated before the next shift, costing production time at every start-up.

3

Dredge pump pulsation and swell both work the line continuously; the reinforced rubber body absorbs that instead of loading the joints.

Construction and technical features

Construction: inner lining, reinforcement layer, buoyant interlayer, outer cover layer
Carbon steel flanges at both ends
High pressure resistance combined with flexibility and tensile strength
Abrasion resistance, vibration absorption and aging resistance
Conveys mixed media including water, silt, clay and sand

Quality control

Raw material test on every batch of natural rubber, tensile textile and rubber additives before it enters the warehouse
Hose dimension check on inner diameter, outer diameter, wall thickness and flange alignment against the design drawing
Weight check on every hose to confirm it falls inside the agreed tolerance band
Hydrostatic or vacuum pressure test to the specified working pressure when the order calls for it
Third-party inspection can be arranged on request

Where it is used

Main overwater discharge line behind a cutter suction dredger
Reservoir and lake desilting where the line must cross open water to the shore connection
Land reclamation projects where the floating line is repositioned as cells are filled
Nearshore works where a pontoon-supported line would obstruct traffic

Customisation

Inner diameter 200-1100 mm in 5800 or 11800 mm section lengths
Working pressure specified within the 0.5-4.2 MPa band
Flange drilling matched to the line already in service
Customer logo and section numbering in the marking layer

How it compares

Against a standard discharge hose carried on PE floats, the floating hose removes the float hardware and the work of fitting it, and keeps floating when the line is empty. Against the armored floating hose, this version has no embedded wear rings: choose it for sand, silt and clay, and step up to armored when the material is sharp or rocky.

Selection and use notes

Confirm the medium and particle size so the lining specification matches the duty
Keep the line's natural curve; do not pull a floating line straight against its bend limit
Inspect the outer cover for impact damage after weather events, since the buoyant layer sits inside it
Rotate sections along the line so the section nearest the dredger is not always the same one

FAQ

Questions buyers ask

Does it float when empty as well as when working?

Yes. The buoyant interlayer design keeps the hose afloat on the water surface in both empty and working condition.

Do I still need PE floats with it?

No. Buoyancy is built into the hose wall, which is the point of the construction. PE floats are for pipelines that do not float on their own, such as HDPE or steel pipe.

What section lengths do you supply?

5800 mm and 11800 mm, with inner diameter from 200 to 1100 mm.

What media can it carry?

Mixed media including water, silt, clay and sand, connected to CSD or TSHD dredgers.

What is the working pressure?

0.5-4.2 MPa working pressure with 1.5-12.6 MPa burst pressure.

Can third-party inspection be arranged before shipment?

Yes, an independent inspection agency can be invited according to your requirements.