Welcome to dB Noise Reduction

Annular Ring Circular Silencers
Model 242

Annular Ring Circular Silencers - Model 242
Standard Grade, Sheet Metal Construction

Applications
  • Fan inlet and outlet silencers
  • Pressure blower inlet silencers
  • Exhaust stack silencers
  • Ventilation intake and discharge silencers
Benefits
  • Excellent alternative to parallel baffle circular silencers. Ideal for use on large axial fans requiring low pressure, symmetric airflow
  • Good choice for use as insert silencers and when small passage widths are required for mid to high frequency attenuation
Advantages over welded silencers
  • 20% to 30% cost savings
  • Much lighter than welded silencers
  • Suitable for many light/medium industrial applications
Accessories
  • 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 annular baffle ring designs for dirty applications
  • Insert silencers (annular rings and support structure, without casing) for installation in pre-existing ductwork and stacks

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

Product details

Flows

Up to 400,000 acfm

Pressures

Up to 30" wg

Temperatures

Up to 250° F

Sizes

From 36" ID X 36" long

to 120" ID X 120" long

Unit weight

Up to 5,000 lbs

Materials

Mill galvanized (standard). Stainless steels and aluminum available

Construction

20 ga to 16 ga welded sheet metal casings with 22 ga acoustic baffles

Paint finishes:

Alkyd and enamel finishes available