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Parallel baffle circular silencers - Model 233 industrial grade, all welded construction



  • Fan inlet and outlet silencers
  • Pressure blower inlet silencers
  • Exhaust stack silencers
  • Ventilation intake and discharge silencers


  • Usually used in larger diameter, moderate to high velocities, systems requiring substantial noise attenuation
  • Superior choice for use as insert silencers and when small passage widths are required for mid to high frequency attenuation
  • Aerodynamically designed baffle noses and tails guarantee minimize pressure drop


  • Galvanized and stainless steel mesh bird, insect and safety screens
  • Drilled flanges matched to the connecting equipment or ductwork
  • Mounting brackets, support legs, saddles and feet for silencer installation
  • Access panels and doors for inspection of internals
  • Variety of fabric, film and mesh baffle liners available for different types of service
  • Pressure and flow measurement devices including pressure taps, rings and piezometer tubes

Design options

  • Cleanable and removable liner/bullet designs for dirty applications
  • Insert silencers (baffles and support structure, without casing) for installation in pre-existing ductwork and stacks
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Parallel baffle circular silencer features

Parallel baffle circular silencer features - image - dB Noise Reduction

Alternative construction - Model 232, standard grade, sheet metal silencers

Product details


Up to 500,000 acfm


Up to 120" wg


Up to 250° F (standard)
Up to 1,200° F (special)


From 36" ID X 36" long
to 120" ID X 240" long

Unit weight:

Up to 25,000 lbs


Carbon, galvanized and stainless steels,
aluminum, special alloys, high temperature
steels, FRP and PVC


16 ga to 3/8" welded casings with 18 ga
acoustic liners and center bullets

Paint finishes:

Alkyd, enamel, high heat, inorganic zinc,
epoxy and polyurethane

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


Servicing clients in the US, Canada, Mexico, and many international locations worldwide.