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Bantam Muffler D-Series End Flow Mufflers

Bantam Muffler D-Series End Flow Mufflers

Directional flow in a compact design

End Flow - Blow Up (MASTER)The Bantam® D-Series End Flow Mufflers are particularly designed for use where it is desirable to direct the flow of exhaust air in a single direction. The lightweight and relatively small size of the Alwitco End Flow Mufflers permit them to be used in almost any location. Bantam® mufflers have managed excessive noise and promoted employee safety for more than 40 years.

Unit should be mounted in a protective position, free from excessive vibration. Just like thousands of other plants, your facility can have a more pleasant and productive work environment by reducing extreme air blasts and air noise.


  • • Specifically designed for directing the flow of exhaust air in a single direction
  • • Discharges exhaust air axially through a unique honey-combed end cap that disperses the air blast and dampens exhaust noise
  • • Lightweight and small, standard model is constructed of zinc-plated steel
  • • All stainless steel construction available for very corrosive or sensitive situation
  • • Ideal for use in most locations … facing any direction
  • • Recommended for pressures up to 125 psi



The D-Series mufflers are offered in many NPT sizes. Please select the model below that is needed to order online or see more information. If you have questions contact our customer service by calling toll-free: 866-650-1937 or email

Model Type Part Number Connection Size Hex Length Flow SCFM
D18 0153018 1/8" .43" 1.37" 44
D28 0153028 1/4" .56" 1.75" 72
D38 0153038 3/8" .69" 2.20" 136
D48 0153048 1/2" .87" 2.75" 216
D68 0153068 3/4" 1.06" 3.15" 400
D88 0153088 1" 1.31" 3.87" 560
D108 0153108 1-1/4" 1.68" 4.50" 800
D128 0153128 1-1/2" 2.00" 5.00" 880
D168 0153168 2" 2.37" 5.50" 1760
How it Works

How It Works

Bantam® muffler and filter product lines reduce excessive noise by dividing the air stream and turning it back on itself. As air exhaust enters the muffler at high velocity, Atomuffler and Bantam mufflers redirect it into smaller air streams that rebound off opposing walls of the muffler chamber. With air streams colliding head-on with each other, velocity is reduced and the exhaust air is gently dispersed throughout the disseminator surface area. This technique reduces noise without sacrificing machine performance.

Manage Compressed Air Noise

  • Commonly known as exhaust mufflers, these devices promote clean and quiet pneumatic operations besides promoting health & safety in the industrial workplace.
  • Reduces Exponentially Perceived Noise (EPNdB) without impeding equipment performance.
  • Designed to take air exhaust noise discharged from valve exhaust ports, cylinders, and other compressed air equipment, and muffle it with optimised Constant Velocity (CV) flow factor.
  • Exhaust air flows softly to atmosphere free of noise, oil fog, and other contaminants.
  • Features a unique obstruction-free expansion chamber, with corrosion-resistant aluminium end covers, zinc-plated steel components and a cellulose fiber element.
  • Female connections available on request.
More Information

Beginning in the early 1900s, the concept of "noise" came into public awareness. Factories, automobiles, and even talking movies generated new - and much of it unwanted - background sound that made everyday living more unpleasant and unhealthy. Various sources show evidence of these concerns from that era, including numerous and varied studies and journal reports. The first electrical sound meter was documented in 1907-8 and the first tentative standards for sound meters were published in 1936.

Beginning in the late 1940s with a focus on air-operated equipment, Atomuffler® and then Bantam® mufflers have been setting industry standards in sound control applications all over the world. Both are specified in a wide range of industrial applications where efficiency, dependability and performance are critical. In addition to having superior sound silencing properties, they are also valuable air diffusers that are unsurpassed in the muffler field. Air diffusion positively prevents troublesome air flow and dangerous after-blasts.

Noise Information - How much noise is too much?

  • Noise levels in the upper 70 decibel (dB) range are annoying to some people.
  • Exposure to levels above 80 dB for 8 hours may cause hearing damage, while exposure to levels above 90 dB for the same amount of time is likely to cause hearing damage.
  • When noise levels are above 100 dB for 8 hours, serious hearing damage is possible.
  • 120 dB is considered the human threshold for pain, and eardrum rupture can occur at 150 dB.

Damage caused by noise goes beyond just hearing loss. Recent studies have shown that sustained exposure to high levels of noise can cause stress, hypertension, and even cardiovascular problems.

For example, tests performed on air exhausts not equipped and equipped with Atomuffler® products showed that noise levels can drop from 97-121 dB without a muffler down to 81-84 dB with Atomuffler® products. Thats a decrease of up to 37 dB. On average, noise levels were reduced 17-25 dB. However, every application is different and there is no way to predict exact results.

From a different perspective - dB and power:

  • 3 dB reduction cuts sound energy in half
  • 10 dB reduction decreases sound energy by a factor of 10
  • 20 dB reduction decreases sound energy by a factor of 100

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