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Duramax Marine
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Johnson Cutless
Water-Lubricated
Bearing Systems,
Rudder Bearings and Stern Tube Filler
. Advanced
Water-Lubricated Strut, Stern Tube and Rudder Bearing Systems
. Duramax Heat
Exchange Systems
. Duramax Shaft
Seal Systems
. Duramax Impact
Protection Systems
. Duramax
Industrial Products
.

Duramax BoxCooler provides you with superior protection, design flexibility, and large cooling capacity



It operates in a sea chest within your vessel’s hull
protected against underwater hazards. It can meet the specific cooling needs of your engine as well as the cooling needs of multiple heat sources, while using less space in your vessel. A Proprietary heat-cured synthetic coating protects the cooler tubes unit from galvanic corrosion. This coating is resistant to saltwater, polluted water and chemicals.

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Water Siphon
The BoxCooler works on the principle of Thermal Siphoning.

This is the movement of heated water due to convective currents. The fact that hot water will rise and cold (denser) water will fall, results in a natural movement of water or circulation through the sea chest. Engine’s cooling water is pumped through a highly efficient aluminum brass (CuZn20Al) tube bundle. Openings at the top and bottom of the sea chest create a convection current which flows over the tube bundle and transfers heat into the sea.
boxcooler

Impressed Current Anti-Fouling System (ICAF) prevents fouling caused by marine growth.


Artificially triggered voltage differential between the copper anodes and the cathodes causes copper anodes to dissolve. Copper ions are formed, preventing the build up of marine growth.

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pdf   Duramax BoxCooler Brochure
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pdf Duramax BoxCooler Installation Guide
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bearings

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Design and
maintenance flexibility


  • Larger cooling capacity than external systems
  • Can cool engines from
    0-10,000+ HP
  • Maintaining and reparing without dry-docking.
  • No overhauling raw
    water pumps and piping every 5 years

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Can be engineered to cool multiple heat sources on one cooler

single

Single heat source =
single circuit

single
2 heat sources =
2 circuits on one BoxCooler

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Typical heat sources

  • Main engines
  • Auxiliary engines
  • Bow thrusters
  • Air-conditioning systems
  • Hydraulic systems

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Secondary raw water system unnecessary

  • This means raw sea water is not being pumped into the vessel
  • Eliminates the need for sea water strainers or filters

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Ideal for most vessel types

  • Tug boats
  • Supply vessels
  • Ice breakers
  • Dredgers
  • Fishing vessels
  • Cargo ships
  • Barges and Ferries
 
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  Duramax® is a registered trademark of Duramax Marine® LLC.  
       

17990 Great Lakes Parkway, Hiram, Ohio 44234 U.S.A.  |  PHONE +1 440.834.5400  |  FAX +1 800.497.9283 USA & Canada or +1 440.834.4950 
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