Sound Attenuator
Sound Attenuator
Sound Attenuator
Sound Attenuator
Sound Attenuator
Sound Attenuator
Sound Attenuator
Sound Attenuator
Sound Attenuator

Sound Attenuator

  • QD-ZKFX Rectangular Sound Attenuator

    Sound attenuators are designed to reduce noise generated by fans and other equipment in industrial settings. The installation of a sound attenuator on the inlet or outlet of a ventilation system has been proven to reduce noise levels by as much as 10 to 40 dB(A) - and 50 to 93% drop in noise levels. Our sound attenuators are made of either carbon steel or stainless steel depending on customer requirements, and feature a small size, silent performance, light weight, and easy installation. They are widely used in power generation, chemical, metallurgical, and textile industries.

    Quanda provides customized sound attenuators to meet unique customer requirements.

    This regular sound attenuator is designed to reduce noise in medium and low-pressure fans in air conditioning systems and heat ventilation systems with a silencing effect per unit length as follows: 10~15dB for low frequency, 10~25db for medium frequency, and 25~30db for high frequency. Its average drag coefficient is 0.4, making it ideal for the place where wind speed is 6-12m/s (mm).

    Specifications
    NoSize(mm)Length(mm)Effective Cross-sectional Area (m2)Expansion Ratio (M)Effective Cross-Sectional Frequency (Hz)Applicable Air Volume (mm³/h)
    A×Ba×bVelocity 6m/sVelocity 8m/sVelocity 10m/sVelocity 12m/s
    1800×500520×23016000.0934.265962000266033304000
    2800×600510×37016000.1393.915073000400050006000
    31000×600700×37016000.1863.174804000533066708000
    41000×800770×40016000.2313.4642050006660832010000
    51200×800700×5509000.2783.43380600080001000012000
    61200×1000780×6309000.3723.203398000106601334016000
    71500×1000950×6309000.4633.2943010000133201664020000
    81500×14001000×9709000.6953.705131500020002500030000
    91800×14001300×9709000.9282.7347020000267003340040000
    102000×18001500×13109001.3902.5939330000400005000060000
  • QD-ZKGX Rectangular Duct Silencer

    Rectangular duct silencers use porous sound absorption materials in airflow ducts to attenuate sound waves for a noise reduction. The friction between acoustic energy and porous sound absorbing materials converts the acoustic energy into heat.

    SerialThe noise reduction at the octave center frequency (dB)Size(mm)Weight(KG)
    100200400800160031506300abAB
    Extra-fine glass wool sound attenuator QD-ZG
    17.71520.823.426.227.218.030030020020032.9
    26.412.517.319.421.814.67.230040020030038.9
    35.811.315.617.519.713.26.630050020040044.8
    46.21216.618.82114.07.035035025025038.1
    55.11013.915.617.512.06.035047525037546.5
    64.6912.51415.810.55.335060025050053.9
    75.11013.915.617.511.75.840040030030044.8
    84.28.311.612.914.69.74.940055030045053.9
    93.87.510.411.713.28.84.440070030060062.8
  • QD-GPX Duct Silencer

    The duct silencer is equipped with sound-absorption sheets and installed inside large-scale air ducts. These sound-absorbing sheets form several flat muffler channels, which is why the duct silencer is also called a tubular type silencer. Quanda provides sound-absorbing sheets in a variety of thicknesses, including 50, 100, and 200mm. These sound absorbing sheets are suitable for ductwork with air volume ranges of 750m³/H to 80000m³/H.

  • QD-SWX Sound Attenuator

    This sound attenuator features a double-wall structure and outstanding silencing effect. The broadband sound absorption is more than 1/3 octave bands, making this sound attenuator ideal for ductwork that needs to be moisture and high temperature resistant. For customers with added requirements for degree of cleanliness, we will also customize the sound attenuator, ensuring it is manufactured in accordance with customer provided design drawings.

  • YXSQ Sound Attenuator

    This sound attenuator is equipped with a cross sound-absorption sheet within the cross-sectional area to increase the noise reduction performance and rigidity.

    ModelSize d×L(mm)Flange Length D(mm)Airflow m3/hInsertion loss PaNoise Reduction dB(A)ModelSize d×L(mm)Flange Length D(mm)Airflow m3/hInsertion loss PaNoise Reduction dB(A)
    1320×1100200670~8905.915~205440×11003201720~22905.915~20
    2340×1100220810~10805.915~206480×11003602180~29105.915~20
    3370×11002501050~14005.915~207520×11004002690~35905.915~20
    4400×11002801320~17505.915~208570×11004503410~45505.915~20<
  • QD-ZB Sound Attenuator
    Length (mm)Air Velocity (m/s)Static Pressure Loss (mmH2O)Noise Reduction (dB) in the Frequency (Hz)
    125250500100020004000
    900 (one section)83.87.014.018.019.524.025.5
    61.07.014.320.020.725.525.3
    40.47.514.522.021.727.028.0
    1800 (two sections)85.211.022.331.032.239.740.9
    62.812.625.535.436.845.341
    41.413.427.037.639.148.249.7
    2700 (three sections)87.013.226.837.238.647.649.1
    63.215.932.244.746.557.259.0
    41.917.234.948.450.462.154.0
  • ZXSW Sound Attenuator

    This sound attenuator features perforated sound absorbing acoustic panels filled with an extra-fine glass wool inside the inner wall for a noise reduction performance.

    Model ZXW-ISize1234567
    A×B(mm)320×200320×250320×320400×200400×250400×320400×400
    Size891011---
    A×B(mm)500×200500×250500×320500×400---
    Model ZXW-IISize12131415161718
    A×B(mm)630×200630×400630×500630×630800×320800×400800×500
    Size19202122232425
    A×B(mm)800×630800×8001000×4001000×5001000×6301000×8001000×1000
    Model ZXW-IIISize26272829303132
    A×B(mm)1250×4001250×5001250×6301250×8001250×10001600×5001600×630
    Size33343536373839
    A×B(mm)1600×8001600×10001600×12502000×6302000×8002000×10002000×1250
  • XJYX Sound Attenuator

    Sound absorption material inside this sound attenuator is glass wool wrapped in a glass cloth and a galvanized orifice plate lining. This high-performance sound attenuator is often used in air inlets and outlets of ventilation and air conditioning systems to effectively reduce dynamic pressure, increase static pressure, and stabilize the airflow.

  • XBYC Sound Attenuator

    This sound attenuator is designed for noise reduction in service rooms without affecting ventilation. It will also reduce outdoor interference for server rooms. It is made of a high-quality galvanized steel, aluminum alloy, or stainless steel according to customer requirements, and uses a small, elliptical shaped wing sound absorption sheet for noise reduction. The sound attenuator is widely used in ventilation systems for service rooms, hotels, hospitals, and other areas.

    Specifications
    Thickness of Sound Attenuator (mm)Size (W×H)Noise Reduction (dB) in the Frequency (Hz)
    125250500100020004000
    300300×60010.011.012.015.019.020.0
    600×80010.111.212.115.219.220.1
    900×100010.211.312.215.319.420.3
    900×120010.311.512.315.519.520.4
    1200×120010.511.712.515.619.720.5
    1200×200010.811.912.815.819.820.7


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