Welcome to dB Noise Reduction

Reactive Mufflers
Model 333

Reactive Mufflers - Model 333
Industrial Grade, All Welded Construction

Applications
  • The standard exhaust muffler for use on all internal combustion engines
  • Intake and exhaust silencers on PD blowers operating below their critical speed
  • Intake and exhaust silencers on reciprocating compressors
  • Other applications where low frequency noise control is needed
Design features
  • Four multi-chamber reactive muffler designs are available; Types A, B, C and D (equivalent to Industrial, Residential, Critical and Hospital grades)
  • Tuned reactive chambers and perforated tubes to remove low frequency pulsations and noise
  • End intake and exhaust, as well as side intake and exhaust connections available

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

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
Reactive 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 60,000 acfm (standard)

Pressures

Up to 120" wg

Temperatures

Up to 1,200° F

Sizes

From 3" ID to 30" ID (standard)

Larger diameters available

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