If asked, what would you assume to be the most common injury attained when working in the manufacturing industry? While your first guess may not be hearing loss, it’s a prevalent risk in this line of work. Many manufacturing facilities use equipment that exudes dangerous sound levels. When these levels exceed 85 decibels, as they oftentimes do, permanent hearing loss can occur.

To avoid this common problem, employers must outfit these machines with silencers. Silencers will serve to effectively attenuate the volumes these machines cause. When chosen and installed correctly, workers can perform their jobs without having to fear hearing loss. If done incorrectly, however, the cost and manpower to install them will have gone to waste, as they are unlikely to perform as they should. As such, you must choose the correct industrial silencer. If you’ve yet to install a silencer, it’s important that you know the correct way to do it to save any potential worries later on. We provide a short guide outlining how to choose the correct industrial silencer.

Inlet vs. Exhaust Silencers

Before we proceed on the steps for selecting your silencer, you want to know if you’ll need an inlet or exhaust silencer. An inlet silencer resides on the intake side of a device, while an exhaust goes either on the outlet or the exhaust of the muffled device.

Determine What is Causing the Noise

You can’t come up with the proper solution if you don’t first properly diagnose the issue. When doing such, you may find that the issue is one that a silencer can solve. Below are some of the common causes of noise in industrial equipment. Analyze the solution by checking the objects on our list:

  • Pressure pulses from fans
  • Neglected equipment maintenance
  • Unlubricated parts
  • Compressed air leaks
  • Improperly aligned belts
  • Vibrations in equipment
  • Unbalanced parts

Noise Reduction Requirement

When a manufacturer specially makes a silencer, they consider factors such as size and mass and take each detail into account. Another aspect they consider is the amount of noise produced and how much they need to reduce it. The application used, as well as the size, fit, and materials will determine how many decibels professionals can reduce the noise level by. Industry leaders refer to the consideration of these factors as the insertion loss in decibels. This isn’t a one size fits all solution, as a piece of machinery can only handle so much resistance to perform as it’s meant to. Therefore, you can’t simply slap on a heavy-duty device with the notion of it quickly reducing noise. One must consider what a machine can handle, in conjunction with the amount of noise reduction needed to produce safe levels.

With this in mind, you must measure how much noise a machine makes to determine how much noise you need to reduce. There are various tools today that can easily measure these levels, and you’ll want to monitor this regularly.


You’ll need to be aware of the object’s measurements you plan to install the silencer or muffler on to know the required dimensions of your silencer. Depending on the equipment you have, you can determine the silencer’s size according to constant or maximum flow.

Another important factor is the shape of the silencer. These silencers usually come in square, rectangular, oval, or circular shapes.

Operating Conditions

Be sure to consider the operating conditions of the equipment you will outfit with a silencer. This includes factors such as how often workers use the equipment, emission levels (whether or not the machine runs at full power), as well as the equipment’s location. Each of these is an important factor when it comes to crafting the perfect silencer. Talk with the company you’re outsourcing your silencer design from to give them this information.


There are several different applications for silencers. Some common ones you may initially think of include automotive or gun silencers. However, the majority of them lie in various manufacturing facilities. A few of these applications include the following:

  • Vacuum pump silencers: These assist in the noise attenuation of the inlet or outlet port of turbines. There are different silencers created for wet and dry vacuum pumps. The silencers used for wet pumps have to attenuate noise and separate water from the air.
  • Industrial fan silencers: The blades of industrial fans create high-volume airflow and can generate dangerous noise levels. One must consider resistance when working with industrial fans, as the wrong silencer can provide too much backpressure. This would interfere with the fan’s airflow.
  • Turbine silencers: Professionals often utilize these for gas turbines and to reduce noise on either the inlet or outlet ports. These silencers must be able to absorb the noise as well as withstand high levels of heat.
  • Compressor silencers: Compressors oftentimes exude low-frequency pressure pulsations and noise. Band noise is also a common issue that one must address. There are numerous silencer and muffler applications that you can use to reduce the noise of compressors.

Additional Protection

The right company will perfectly tailor a silencer to meets your needs. However, you still need to provide your employees with all the protection they may need to remain safe in the workplace. This includes items such as earplugs and noise-canceling headphones. It’s important to note that there is never such a thing as too much safety.

Outsource to the Right Company

It’s important to outsource your equipment to a company that will do the work required to give you the best possible results. Though it may initially seem to be a hefty investment, it’s an important one to make, and it may prevent any future workplace complications.

At SVI Industrial, we consider every aspect when it comes to the results that we offer our customers. We tailor our designs to your specific product and no other. For example, the correct silencer is vital when it comes to items such as exhaust gas silencers as this will create the perfect work environment. To learn more about the services we provide, contact the professionals at SVI Industrial today.

How to Select Industrial Silencers infographic