Reactive-absorptive mufflers - Model 343 and 353
industrial grade, all welded construction

Applications

Engine exhaust mufflers requiring substantial noise reduction
Intake and exhaust silencers on PD blowers operating above their critical speed
Compressor intake and exhaust silencers
Other applications where low frequency pulse control and high mid-upper band attenuation are both required

Multi-chamber reactive muffler section followed by an absorptive muffler section
Excellent noise reduction in all octave bands
Reactive section includes tuned chambers and perforated tubes to remove low frequency pulsations and noise
Absorptive section provided with an acoustic liner on Model 343 mufflers. Model 353 mufflers also include a center bullet
Acoustic media in absorptive section protected by high temperature cloth and 304 ss mesh liners
Custom designed and manufactured to meet the attenuation needs and pressure drop constraints of each application
End intake and exhaust, as well as side intake and exhaust connections available

Reactive-absorptive muffler features - image - dB Noise Reduction

Up to 60,000 acfm (standard)

Up to 120" wg

Up to 1,200° F

From 3" ID to 30" ID (standard)
Larger diameters available

Up to 25,000 lbs

Carbon, stainless and corten steels

12 ga to 3/8" casings with 12 ga internals
designed for thermal expansion

High heat aluminum or black, as well as a variety
of low temperature paints

For other customized muffler designs, please contact us and we will be happy to assist you.