Noise mufflers are used to reduce the level of acoustic output, which is emitted directly by the source (fan, compressors and other devices) into the ventilation ducts.
Most often, mufflers are therefore installed in the ventilation system ensuring the supply of fresh air and the exhaust of waste air (noise disturbing the surroundings). Acoustic data are pre-defined and noise limits are determined by government regulation or other valid regulations. Our noise mufflers can be used wherever operating substances are aggressive vapors (extraction from anodizing lines, galvanic lines, swimming pools…).
At the customer’s request, we manufacture noise mufflers of precise dimensions and possibly atypical shapes.
The standard designs are quadrangular (stage) and circular shock absorbers.

QUADRANGULAR NOISE MUFFLER (COULISSE)

THC 600×300-1000/100/100/P40-PP/PP-H RAL 7032

Marking legend: 
THCproduct marking
width A(mm)
height B(mm)
lenght L(mm)
flange width C(mm)
coulisse width b(mm)
space width s(mm)
PPfixed flange
PP-Hmaterial
RAL XXXXcolour design

Example of marking:

THC 600×300-1000/100/100/P40-PP/PP-H RAL 7032

tquadrangular noise muffler, dimension 600×300 mm, lenght 1000 mm, coulisse width 100 mm, coulisses space 100 mm, type of connection fixed flange, material PP-H (polypropylen homopolymer) colour design grey

Implementation:

The quadrangular noise muffler is installed directly into the ventilation duct.
We choose the damper material according to the type of medium to be extracted. The screens are inserted using guide rails into the pipe part. Coulisse is filled with absorbent, non-flammable, chemically resistant, sound-absorbing material. A polypropylene non-woven filter fabric will be stretched over the backdrop to prevent parts of the insulation material from penetrating. As a standard, the wings are manufactured with a single lead-in to eliminate the increase in the shock absorber’s own torque and increased pressure loss.
The dimensions of the backdrops and the width between the coulisse can be changed according to the customer’s wishes.
The type of connection is possible via a fixed flange (PP). Connection with loose flange (VP) is possible, where during implementation the flange will be welded on site with wire.

CIRCULAR NOISE MUFFLER

THK 500-1000/50/P40-PP/PP-H RAL 7032

Marking legend: 
THKproduct marking
diameter D(mm)
diameter d(mm)
lenght L(mm)
lenght l1(mm)
flange width h(mm)
filling thickness S(mm)
PPfixed flange
PP-Hmaterial
RAL XXXXcolour design

Příklad značení:

THK 500-1000/50/P40-PP/PP-H RAL 7032

circular noise muffler, diameter 500 mm, lenght 1000 mm, filling thickness 50 mm, type of connection fixed flange, material PP-H (polypropylen homopolymer) colour design grey

Implementation:

We produce circular silencers from 500 mm to 1250 mm in size.
In the case of other dimensions, it is necessary to contact the designer.
The filling material has the same composition and character as that of the square shock absorber.
The thickness of the filling is in the standard dimensions of 50 mm and 100 mm, the length is supplied in the dimension 1000 mm and 600 mm.
The type of connection is possible via a fixed flange (PP). Connection with loose flange (VP) is possible, where during implementation the flange will be welded on site with wire.