Economical Spiral Tube Cooling System that’s easy to install. Easy to expand cooling capacity. easy to maintain.
The Duramax Demountable Keel Cooler 90/10 cupronickel spiral tube design offers superior heat transfer and design flexibility. It’s an economical outboard closed solution to cool main and auxiliary engines on steel-hull vessels.
The unique design of the tubes enhances the surface and creates a turbulent flow to boost heat transfer. In fact, the forced helical motion of the coolant flow extracts heat almost twice as fast as most hull-welded steel channel coolers.