Wisebros, the official UK partner of Stopson Italiana, provides high-performance ventilation and duct silencers designed to effectively reduce noise levels caused by fans, HVAC systems, and air handling units. These silencers are engineered to perform under a range of air flow conditions and are suitable for both intake and exhaust applications.
Stopson Italiana’s product range includes silencers in rectangular or cylindrical configurations, custom-sized for new installations or retrofits into existing ductwork systems. Designed for reliability and acoustic efficiency, our silencers meet the highest industrial standards for HVAC noise control.
SVR Model – Rectangular Ventilation Silencers
Description & Operating Principle
SVR silencers are direct-pass absorption-type silencers suitable for use in both air intake and exhaust duct systems. They are typically used in ventilation and air conditioning networks and are available in two configurations:
- Complete silencer (outer casing with integrated splitters)
- Insertable splitter silencers for existing metal or concrete ducts
Each SVR unit is custom-sized based on duct section and the required acoustic performance. Standard construction allows for pressure up to 100 mm H₂O and temperatures up to 130°C.
Applications:
- Commercial and industrial ventilation systems
- Air handling units and HVAC ducts
- Sound attenuation for fans and mechanical equipment
SVC Model – Cylindrical Ventilation Silencers
Description & Operating Principle
SVC silencers are specially designed for cylindrical duct systems and are ideal for noise attenuation in:
- Axial and centrifugal fan installations (upstream and downstream)
- Cylindrical ventilation lines
- Transition ducts (cylindrical to rectangular)
Standard SVC silencers withstand pressure drops up to 700 Pa, maximum internal pressure of 1000 Pa, and operate efficiently up to 100°C. These silencers are constructed from galvanized steel sheet with internal absorptive material protected by perforated metal to ensure durability and acoustic efficiency.
Key Features & Options – SVR / SVC Silencers
Both SVR and SVC models are available with a wide range of customization options to meet your project specifications:
- Fire dampers and anti-rain louvers
- Flanges and counter flanges
- Seals, bolts, and mounting supports (vertical or horizontal)
- Rectangular-to-cylindrical transition ducts
- Galvanized steel, stainless steel, or special alloy construction
- Protective coatings and special paints
- Aerodynamic profiles for reduced pressure drop
- Accessories for splitter mounting and integration
Trusted Ventilation Silencing Solutions – Delivered by Wisebros
With over 50 years of expertise in acoustic engineering, Stopson Italiana is a recognized leader in HVAC and industrial noise control. As their exclusive UK partner, Wisebros ensures localized engineering support, quick response times, and tailored solutions for any ventilation or duct silencing requirement.
Contact Wisebros today to explore our complete range of ventilation silencers and let us help you build a quieter, more efficient system.