Noise is a common problem when working with vents, what if that noise can be reduced to a minimum? We are working towards a quieter industrial environment.  

Opening vents can generate noise up to 150-160 dB(A), cause hearing damage and noise pollution for the environment. Stringent limitations on noise production are imposed.

Different demands require a different approach. With our extended experience, we can help solve your complex noise pollution problems by turning extreme requirements into practical solutions. Our goal is to be leaders in our field; our success has been proven in the past 35 years.  If you have the requirements Q.E.I. can help you with your custom made vent silencer.

Applicable regulations and design codes differ from one another. All our components are calculated and subjected to internal pressure. Construction and compliance are according to the applicable Pressure Vessel Code for the district or industry of your operations.

Q.E.I. developed a new vent silencer, the AFBR. Next to the AFB (75-90 dB(A) at 1m free field 90°) and ERR (115+dB(A) at 1m free field 90°) the range of the AFBR completes the selection. The ideal silencer for the range between 85 – 115 dB(A), more compact than the AFB silencer. The AFBR silencer can be mounted on any vent, is easily installed and durable. Innovation never stops, QEI keeps on developing the silencers so you can enjoy the quietness.

The inlet of our silencers together with the noise generated by your valve are calculated using CONVAL-9. Giving us accurate noise calculations and optimal compact designs.