BRD Noise and Vibration Control, Inc. offers a variety of process
fan silencers in conjunction with scrubbers, incinerators, dust collectors and other pollution control equipment. HUSH
DUCT ™ silencers provide overall broadband noise reduction plus tonal noise control at
fan blade passage frequencies (BPF) and BPF harmonics. Large ID
fans typically create sound power decibels in the 125 to 140 dB range with
fan BPF tones in the 100 to 400 Hz frequencies. These tones propagate through...
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