MB21 Model

MAXIM SILENCER APPLICATIONS

Size A B C N O P Est. Wt.
Min. Max.
4" 14 48 4 5 1/2 22 10 45 110
5" 16 55 5 6 1/2 25 11 52 1/4 120
6" 18 63 6 7 29 1/2 12 60 1/4 170
8" 22 76 8 8 1/2 36 1/2 14 73 1/2 285
10" 26 91 10 10 1/2 43 16 1/2 88 460
12" 30 109 12 12 53 18 1/2 106 1/4 745
14" 36 102 14 14 48 21 1/2 99 1/4 965
16" 40 119 16 17 56 23 1/2 116 1/2 1340
18" 45 127 18 19 60 26 1/2 124 1850
20" 50 144 20 21 69 29 141 1/4 2175
22" 54 161 22 22 78 31 158 1/4 2650
24" 60 165 24 24 79 34 162 1/4 3400
26" 64 183 26 26 89 36 180 1/2 3850
28" 68 200 28 27 98 38 197 3/4 4840
30" 72 216 30 29 107 40 213 3/4 5150

Note: Dimensions are in inches, weights are in pounds.

Typical Applications: Features: Optional Accessories:
• Rotary positive blower
discharge–10” size & below
• Wet exhaust systems (mix
temperature not exceed 200 oF
at silencer)
• Superior acoustical design
& long service life
• Double wall, all welded
construction
• Prime coated exterior finish
• Installed in any position
• Stainless Steel or Monel
construction
• Flanged connections
• Standard pipe size necks
Sample Specification:
The silencer shall be a Maxim Model MB21 with heavy wall, all welded construction, and protected by a single coat of shop primer. Acoustical packing shall be polyester wool or other material suitable for the application, protected by perforated metal with wire screen/cloth. The silencer shall be complete with the following accessories.

Use for a high degree of overall attenuation on
blower intakes or discharges. For intake service,
specify the MB31-I.

MB21 / MB21-I - Chamber Silencer for Blower Service – Typical Attenuation is 24 dBA

Use for good attenuation on blower intakes or
discharges. For intake service, specify the MB21-I.

Use for a high degree of attenuation of high
frequency noise on blower intakes or discharges.
For intake service, specify the MB11-I.