Abrasives & Dredging - Dredger Separate Ring

Dredger separate ring
Gimbal supports on suction dredgers

At a glance: Designed for use on outboard systems of suction hopper and trailing suction and discharge dredgers where gimbal supports are used. These dredger hoses or sleeves are capable of high angular deflection over short lengths
Example:    850mm and 450mm separate ring suction hoses.
350mm and 650mm bore separate ring dredging sleeves with rubber and fabric flanges.
Right: Separate ring dredge hose on a gimbal joint.
Specification: A420: Dredger separate ring suction hose.
Size: 12" (254mm) id to 39.1/2" (1000mm) id
Length: Up to 12 mtrs (39 ft).
Lining: Smooth bore, mandrel built. Highly abrasion and cut resistant black Natural rubber lining in varying thickness' depending on the severity and life expectancy of the application.
Reinforcement: A substantial carcass of high strength synthetic cords and extremely robust separate rings, embedded in a solid D section of highly resilient rubber, giving maximum resistance to crushing and vacuum collapse.
Cover: Neoprene rubber for excellent resistance to abrasion, weathering, oils, grease and seawater.
Couplings: Refer to Coupling Systems for further information.
Data: These weights are a guide only, based on 12mm thick lining and standard ring spacing.

Based on 12mm lining and standard ring spacing
Bore size Weight Standard ring
inch mm kg/mtr spacing mm
12 300 55 75
16 400 85 100
20 500 120 125
24 600 145 125
27.1/2 700 165 125
31.1/2 800 215 150
35.1/2 900 240 160
39.1/2 1000 275 170
Variations: Lining thickness can vary depending on the nature of the application. Thickness' are available in increments of 1.5mm commencing at 9mm. e.g. A420-10.5 = 10.5mm thick lining. A420-25 = 25mm thick lining.