Centek Fuel/Air Separators
Centek Fuel/Air Separators: Precision Gas/Water Separation for Marine Exhaust Systems
When it comes to managing exhaust gases and cooling water in a marine environment, few challenges are as technically demanding — or as consequential — as keeping those two streams cleanly separated. Centek Industries, a long-trusted name in marine exhaust engineering, addresses this challenge head-on with its purpose-built Fuel/Air Separator solutions, most notably the flagship Gen-Sep® line.
What the Gen-Sep® Does — and Why It Matters
In a standard marine wet exhaust system, engine cooling water and exhaust gases are discharged together through a shared hose. While this arrangement works well for many installations, engines located amidships or well forward in the hull can struggle with unwanted water splash, noise surges, and routing complications. Centek's Gen-Sep® was engineered specifically to solve these problems.
The Gen-Sep® works by diverting exhaust gases and cooling water to separate outboard ports, allowing each stream to exit the vessel independently. This not only eliminates the periodic water surging and splashing common in wet exhaust systems, but also significantly reduces exhaust noise. When paired with a Vernalift® muffler — as Centek recommends — the Gen-Sep® system delivers sound attenuation in the range of 25–30 dB, making it one of the quietest exhaust solutions available for generators and inboard engines.
Construction, Configuration, and Approvals
Centek builds the Gen-Sep® from the same GRP (glass-reinforced plastic) materials used throughout its wet exhaust system lineup — a durable, corrosion-resistant choice well suited to the marine environment. All ports are situated on the bottom of the unit, with two interchangeable ports for exhaust gas inlet and outlet, and one central port for the water drain. This thoughtful layout means the water drain can be positioned below the waterline, eliminating the irritating water splash that often disturbs boats at overnight moorings.
The Gen-Sep® must be installed above the waterline and is suitable for use with diesel engines on generator sets. It is available in a wide range of sizes and can be configured to custom specifications through Centek's engineering department — a useful option for builders and repower projects with non-standard routing requirements. The Gen-Sep® carries the prestigious Lloyd's Register Type Approval, an independent certification that speaks to its engineering quality and reliability in demanding marine applications.
A Focused Solution from a Trusted Marine Brand
Centek's approach to fuel/air separation reflects the same philosophy found across their entire product range: solve a specific, real-world problem with a purpose-built, well-constructed component. For boaters dealing with midship or forward engine placement, or anyone looking to reduce genset noise and eliminate exhaust splash, the Gen-Sep® represents a clean, proven solution backed by an established marine manufacturer.
Explore the full Centek brand catalog for their complete range of marine exhaust components, or browse all available Fuel/Air Separators to find the right fit for your vessel.