ILL30 Inline Silencers

30 dBA Noise Reduction

Maxim ILL30 silencers will provide a very high level of silencing and minimal pressure drop when properly installed with pressure reducing valves and on centrifugal compressor discharges. These silencers are fabricated in accordance with ASME Boiler and Pressure Vessel Code, Section VIII, Division I.

Typical Applications

  • Pressure reducing valves
  • Centrifugal compressor discharges


  • Advanced acoustical design
  • All welded construction and long service life
  • Easily installed in any position
  • Prime coated exterior finish
  • Low pressure drop

Optional Accessories

  • Flanged inlet and outlet connections
  • Metallic wool packing
  • Various support arrangements
  • Special paint
  • Stainless steel construction

Inline, ASME Code Silencers:Model ILL-30

Attenuation for Inline, ASME Code Silencers:Model ILL-30

Inline, ASME Code Silencers:Model ILL-30 Sizes and Specifications

 ABCDMax. Operating Pressure
-20°F to 650°F for each design
Est. Wt.


 NomNom1�16” Corrosion Allowance(Max.)
310¾303Cust375; 540; 1200322
10¾34380; 540; 1200375
412¾384325; 450; 1200558
512¾465325; 446 1200717
613¼686249; 847; 1076607
815¼928214; 731; 931941
1017¼12010188; 554; 8201141
1219¼14012167; 413; 574; 794; 8901881
1421¼16114151; 299; 446; 717; 8042387
1623¼18016137; 273; 406; 473; 654; 7332935
Note: Dimensions are applicable to both standard and reduced inlet silencers. Standard silencers do not include diffusers. Dimensinos C and D are equal on standard silencers. Data on larger sizes available upon request.
  • All dimensions are in inches. All weights are in pounds. Weights are approximate.
  • Listed sound data is based on typical performance and should not be considered absolute.
  • *See nomenclature guide for additional information on part number creation.

To order or for more information, call us at 800-234-6778 or complete our Contact Form

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