COWL® compact silencer

Maximum performance in minimum space: efficiency and adaptability for diverse industrial needs

COWL® compact silencer

The Cowl® compact silencer system is the ideal solution wherever high silencing performance is required in small installation spaces. Compared to conventional silencers, the compact design allows you to achieve savings of

Approx. 65% of the installation volume
Approx. 50% of the weight

The attenuation principle is based on the linear propagation of sound waves, which are refracted by the spiral-shaped inner wall and are further attenuated as they travel through the spiral. Thanks to its special design, the range of applications for the Cowl® is virtually unlimited. This compact silencer can be used for applications in vehicle or machine construction as well as in plant engineering. The noise emissions of diesel, petrol and gas engines can be sustainably reduced.

For engine outputs from 8 – 850 kW
Insertion loss of up to 32 dB(A)
15 system sizes in 9 different versions
Can also be used in reverse flow

We always take into account the exhaust regulations, the engine manufacturer’s specifications and the maximum possible installation space. As a system supplier, we also offer you the additional pipework, brackets, clamp and flange connections, as well as precisely fitting, high-performance heat protection insulation for the entire system.

Your advantages at a glance:

Space-saving design
Material qualities:
Aluminized sheet steel
Stainless steel version in 1.4301 (V2A)
Stainless steel version in 1.4404
Heat-resistant coating up to 650°C
Modifications according to customer requirements

The Cowl® compact sound attenuator system is the ideal solution wherever high attenuation performance is required in small installation spaces. The damping principle is based on the straight-line propagation of sound waves, which break on the spiral-shaped inner wall and are further damped as they travel through the spiral.

The disk compact silencers are ideal for limited installation space. They are resistant to high temperatures and are characterized by a flat, disc-shaped design.
The silencers in the DCK-2 and DHK series achieve a high attenuation of up to 45 dB(A) and are available in connection diameters from 102 mm (4”) to 457 mm (18”). As a more compact variant, we recommend the Cowl® MicroDisk in sizes from 32 mm (1.25”) to 51 mm (2”), with an attenuation of up to 35 dB(A). Disk silencers are commercially available with the following features:

Made of aluminized steel
Optionally made of stainless steel 1.4301 (V2A) or 1.4404
Other dimensions available on request

Thanks to the compact design of the Cowl® compact silencers, you save approx. 65% of the construction volume and approx. 50% of the weight of a comparable absorption silencer.
As a standard model, the TS series achieves an insertion loss of up to 28 dB(A). In comparison, the MS series offers eight fixed mounting points, which means that an additional mounting bracket is not required. For higher insertion loss requirements of up to 33 dB(A), we recommend the TXS series, the standards remain the same. The TXP series is characterized by an additional reflection chamber and an insertion loss of up to 35 dB(A).
The Cowl® compact silencers are commercially available with the following features:

Made of aluminized steel
Optionally made of stainless steel 1.4301 (V2A) or 1.4404
In sizes from 38 mm (1.5″) to 305 mm (12″)
Other dimensions available on request