HDPE-cased fan silencers for underground ventilation — high-tech sound foam in a slim sub-50 mm profile, tested at ~16.3 dB(A) reduction at 1 m.
HDPE inner and outer casings around a punched inner cylinder and high-tech sound foam. Built to about 1.5× the fan diameter for maximum noise reduction, with 20 mm HDPE end flanges bolted through the existing steel-flange P.C.D. Detachable bell or bag-cone ends available. The slim sub-50 mm wall keeps the silencer within the fan-flange diameter.
Enquire about Fan Silencers →↑ Back to list20 mm HDPE end flanges formed to fit any fan and bolted to sandwich the existing steel flange. Standard configurations suit common silencer types (HF 804 through HF 1454), with custom drilling to match your fan’s bolt P.C.D. and hole pattern.
Enquire about Flanges →↑ Back to listTransition adaptors that connect the silencer outlet to the ventilation bag. Manufactured in any diameter and transition (for example 900→915 or 900→1067 mm) to suit the silencer and bag sizes on site.
Enquire about Vent Bag Adaptors →↑ Back to listBell-mouth intake cones that smooth airflow into the fan and cut intake losses. Manufactured in any diameter and transition to suit the silencer type.
Enquire about Intake Cones →↑ Back to listA simple cover that bolts to the fan flange and opens or closes automatically with the fan’s air flow — sealing the opening when the fan is off.
Enquire about Self-Regulating Fan Covers →↑ Back to listSend your site details and requirements — our engineering team will scope and quote.
