Welcome to dB Noise Reduction

Absorptive mufflers
Models 313 and 323

Absorptive mufflers - Model 313 and 323
Industrial Grade, All Welded Construction

Applications
  • Turbine exhaust mufflers
  • Low pressure turbo engine exhaust mufflers
  • Engine and turbine intake mufflers
  • Centrifugal blower and compressor intake and exhaust silencers
  • Any application requiring low pressure and/or high mid-upper band attenuation
Model 313 mufflers
  • Straight through circular design with absorptive acoustic liner, but without a center bullet
  • No obstructions in the airstream
  • Good for smaller diameter connections and when low pressure drop is important
Model 323 mufflers
  • Circular design with acoustic liner and a center bullet when substantial noise reductions are required
  • Aerodynamically designed for maximum attenuation with minimum pressure drop
Design features
  • Sizes for any connection diameter to fit the equipment in question
  • Custom designed and manufactured to meet the attenuation needs and pressure drop constraints of each application
  • Absorptive acoustic media protected by high temperature cloth and 304 ss mesh liners
  • End intake and exhaust, as well as side intake and exhaust connections available
Accessories
  • Mounting brackets, support legs, saddles and feet for muffler installation
  • Tail pipes, rain cowls and caps
  • Access panels for inspection of internals
  • Companion flanges and expansion joints
Absorptive muffler features
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For other customized silencer designs, please contact us and we will be happy to assist you.

Product details

Flows

Up to 500,000 acfm

Pressures

Up to 120" wg

Temperatures

Up to 1,200° F

Sizes

From 3" ID X 24" long

to 120" ID X 240" long

Unit weight

Up to 25,000 lbs

Materials

Carbon, stainless and corten steels

Construction

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

Paint finishes:

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