Ventilation Silencer
Weighted sound reduction index up to Rw = 50 dB
Customisable design for airflow, pressure drop and acoustic performance
Suitable for ventilation, air-intake and exhaust systems
Effective ventilation systems require controlled management of airborne noise. The Ventilation Silencer (Type IXKA) is designed to reduce noise in ductwork, air inlets and outlets, and plant rooms. Depending on configuration and project requirements, a weighted noise reduction of up to 50 dB can be achieved, calculated in accordance with ISO 7235 and ISO 717. Each unit is custom-designed based on airflow rate (m³/h), duct dimensions, pressure drop and required noise attenuation, ensuring reliable performance across a wide frequency range.
The silencer provides high acoustic performance with minimal impact on airflow. It is suitable for design velocities up to 25 m/s and operating temperatures up to 100 °C. The casing is available in galvanised steel or stainless steel, ensuring durability in demanding environments. Internally, an impregnated, moisture- and rot-resistant acoustic lining provides broadband sound absorption, optionally protected by perforated metal sheets. The optimised baffle configuration and internal geometry ensure effective attenuation across a broad frequency spectrum.
The Ventilation Silencer is suitable for industrial ventilation systems, plant rooms and air inlet or exhaust duct applications where noise control is required. It can be installed at duct inlets and outlets, within ventilation shafts, or integrated with fans, filters, dampers and roof upstands as part of a complete acoustic solution. Its fully customisable design makes it suitable for both refurbishment and new-build projects, ensuring effective noise control and reliable system operation.
Downloads and specifications
Answers to common questions
Yes. All Merford silencers are custom-designed and can be used in both new construction and retrofit projects, ensuring optimal noise reduction and safety without requiring modifications to the existing installation.
Steam blow-off silencers are designed to handle intermittent releases of steam or gas at high pressure and temperature. They use a combination of reactive and absorptive elements to achieve effective noise reduction under these peak conditions. Exhaust gas silencers, on the other hand, are designed for continuous flow from engines and turbines. They are engineered to accommodate high flow velocities, thermal loads and gas expansion during operation.
Both types of silencers are custom-designed solutions, but they differ in internal configuration, material selection and design approach, depending on the operating medium and process conditions.
Yes. Silencers can be integrated with ventilation systems, acoustic enclosures or modular system components to achieve higher levels of noise reduction and overall system efficiency within a single installation.
