Industrial Silencers

NAP Silentflo are the only Australasian company with independently laboratory certified acoustic solutions for almost every acoustic application, whether it be commercial, architectural, or industrial. 

From steam vent silencers to gas turbine exhaust and resonator silencers; NAP has a proven solution for industrial noise control.

Performance is backed with extensive independent laboratory testing of the insertion loss, regenerated noise level, and aerodynamic performance across the whole range, together with an on-going program of continual product development at their test facilities in Melbourne and Hong Kong.

Cooke Industries have represented NAP in New Zealand for over 40years, and manufacture their entire acoustic products range under license here in New Zealand.  We provide a complete acoustic solution, including:

  • Specialist advice for solving your problem in the most cost efficient manner.

  • A tailored acoustic solution, including bespoke design if required.

  • Local manufacture in our purpose-built facilities with backup from NAP’s factories in Australia, the Far East, and Europe.

NAP offer standard and customised designs for industrial noise control of steam outlets and blow downs, ID and FD industrial fans, and turbine exhausts.


Purpose designed for attenuation of prime power generation equipment.
Purposed designed for aggressive environments and where the control of broadband fan noise with tonal components is critical.
Acoustic solutions for safety venting systems from steam, compressed air, and pressurised gas safety valves and vents.

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