Science of Silence

Our Products

We design and manufacture dry and wet exhaust silencers, exhaust hose, and exhaust water injection systems to control exhaust noise, with or without water separators, for both propulsion engines and generators. Uniquely, Halyard manufactures the entire exhaust system in house. We make our own stainless, duplex and alloy 625 riser system and water injection spray rings, we make our own marine exhaust hose (and silicon) couplings to connect to the silencer.

We manufacture our own GRP filament wound tube and our own GRP silencers. If a dry silencer is used, either by itself or prior to the water injected system, we can also manufacture this in house. All our GRP exhaust components, alongside our silicone and nitrile exhaust hoses, carry Lloyds Register Type Approval.

In the area of pollution control we are also a leader in the developing field of soot burners for large exhaust systems.