Industrial Silencers

We are engaged in offering Vent Silencers that reduces the level of unwanted noise discharging directly into the atmosphere. Depending upon the gas or steam flow in a pipeline, we design these silencers in various models such as steam vent silencer, safety valve silencer, start up vent silencer, super heated safety valve silencer and blow off silencer. Further, to suit the specific requirements of our clients, we offer these silencers in various customized sizes and specifications.

Suction Silencers: With our expertise in this domain, we are able to offer suction silencers that are available in various models such as fan/blower suction silencer, turbo charger inlet silencer and air inlet silencer. Designed with the aid of latest technology, these silencers are widely appreciated by our clients for optimum performance, long service life and low maintenance.

Discharge Silencer: Leveraging on our vast design facilities, we are able to offer discharge silencer that works phenomenal even under adverse working conditions. Designed keeping in mind the diverse requirements of engineering sector, these silencers are available in different sizes and can be customized as per the requirements of our clients.

• Compressor discharge silencer
• Fan/blower discharge silencer
• Sinter fan discharge silencer.

Exhaust Silencer: With the help of latest technology, we are able to offer exhaust silencer that is immensely used in engines to exhaust gases away from a controlled combustion. These precision engineered silencers help in reducing noise generated in the exhaust. Further, to ensure optimum quality of these silencers.

This range of exhaust silencer includes:

• Gas turbine exhaust silencer
• Diesel engine exhaust silencer
• Ejector silencer.

With the help of our experienced engineers, we are able to offer Exhaust Stack With Silencer that is manufactured using corrosion resistant & heat resistant material. These silencers are constructed using full penetration welds to ensure sturdy construction,  high durability and also these silencers are design for minimum pressure loss.

This range of Exhaust Stack With Silencer includes:

• WASHRAG stack silencer
• Cold stack silencer

The prime requirement for a Steam Vent Silencer is its ability to handle with total reliability the rapid release of large quantities of steam from high pressure to atmosphere and attenuating high levels of noise generated at the vent for steam at wide range of pressure and temperature conditions. The silencers are made out of concentric annular acoustic cylinders enclosed with a robust steel casing with dished end or flat end at one end.

The fluid enters through the diffuser and passes through the annular space between the acoustic packing where the sound energy is absorbed. The straight flow path through the annular acoustic cylinders ensure minimum pressure drop. A weather cowl for rain protection is available as an optional item.

The prime requirement for a Start-up Vent silencer is its ability to handle with total reliability the rapid release of large quantities of steam from high pressure to atmosphere and attenuating high levels of noise generated at the vent for steam at wide range of pressure and temperature conditions. The silencers are made out of concentric annular acoustic cylinders enclosed with a robust steel casing with dished end or flat end at one end.

The prime requirement for a Silencers for Boiler Drum Safety Valves is its ability to handle with total reliability the rapid release of large quantities of steam from high pressure to atmosphere and attenuating high levels of noise generated at the boiler drum safety valve for steam at wide range of pressure and temperature conditions. The silencers are made out of concentric annular acoustic cylinders enclosed with a robust steel casing with dished end or flat end at one end.

The prime requirement for a vent silencer is its ability to handle with total reliability the rapid release of large quantities of steam from high pressure to atmosphere and attenuating high levels of noise generated at the exhaust for steam at wide range of Steam Turbine Exhaust Vent Silencer. The silencers are made out of concentric annular acoustic cylinders enclosed with a robust steel casing with dished end or flat end at one end.

Compressor Suction Silencer can be rectangular or cylindrical in construction. The circular silencer is made of concentric annular acoustic cylinder enclosed in a robust steel casing with transition cone or dished end at both ends with inlet and outlet nozzles. The air/ gas enters the silencer and passes through the annular space between the concentric annular acoustic cylinders where the sound energy is absorbed. The straight flow path through annular acoustic cylinder ensures minimum pressure drop. Either steel, galvanized steel or stainless steel is provided for internals based on the customer’s choice

A Compressor Discharge Silencer can be rectangular or cylindrical in construction. The circular silencer is made of concentric annular acoustic cylinder enclosed in a robust steel casing with transition cone or dished end at both ends with inlet and outlet nozzles. The silencer casing with inlet and outlet nozzle will be designed as pressure vessel.

Online Pressure Silencer reducing stations for process gases are used to reduce the line pressure based on the process requirement.

Due to throttling the pressure from high pressure to low pressure, shock and turbulent wave emanated across the valve orifice releases a very high amount of acoustic energy which is transmitted as fluid borne acoustic energy in the downstream pipeline.

Reactive Silencers are generally used to reduce low frequency noise which are very common in low speed equipments such as, low speed diesel engine, vacuum pump and sometimes twin lobe blowers. In reactive silencers no absorptive material is used. The low frequency noise is nullified by reaction by the process gas inside the silencer. These are generally resonated type or mufti-chamber construction or a combination of both. The general limitations of reactive types is reasonably high pressure drop across the silencer and its unpredictable performance for high frequency noise reduction. We also offer a combination of reactive and absorptive silencers depending on the noise generated to achieve the desired noise level performance

The prime requirement of Twin lobe Blower Silencers is for both silencing and pulsation dampening or reduction of vibration.

Noise generated from electric motor are mainly due to cooling air movement, bearing noise, magnetic noise due to cyclic variation of magnetic forces. Mounting the Motor Silencers on ventilation intake & outlet opening reduces the noise considerably. Larger capacity motors tend to emanate noise from the casing due to  magnetic forces which may require acoustic hood. Acoustics India private limited designed, manufactured and delivered electric motor silencers in the capacity of range of 600 KW to 4500 KW

Generally Vacuum Pump generates high broadband Noise when the gas is evacuated and discharged to atmosphere. Further if it happens to be 'wet' gas associated with entrapped liquid in the evacuated gas it also poses environment problem.

The noise associated with evacuated gas is reduced through series of expansion chamber and thereby weakening the acoustic energy in the gas. By combining the mufti-chamber reactive silencer with absorptive section and a separator assembly both the noise reduction and the entrapped liquid separation could be achieved in single compact equipment.

The mufti-louver tangential turn vane stainless steel Separator Silencers assembly creates a spiral motion for the gas and the entrapped liquid is separated due to centrifugal motion of the gases. As there are no moving parts in the separator assembly no mechanical wear out of the metal is anticipated.

These silencers are offered in reactive type, absorptive type or the combination of both   reactive and absorptive type. For large capacity Diesel Generator we also offer DG Exhaust Silencers with soot collecting chamber and spark arresting arrangement.

The reactive silencers will be of resonance type or mufti-chamber type or combination of both.

• We offer Engine Exhaust Silencers with Standard Model of 3 Grades
• Silencers designed for 15dB Noise Reduction (Industrial Grade)
• Silencers designed for 25dB Noise Reduction (Residential Grade)
• Silencers designed for 35dB Noise Reduction (Hospital Grade)
• Silencers designed for customer specific requirement (Custom Built)

Due to continuous pumping action of the pumps of various design such as gear pump, vane pump, piston pump, employed in a Hydraulic System Silencers, releases a very high level of noise due to pumping from low pressure to high pressure. This sudden impulsive shock due to high pressure pumping into delivery pipeline generates high noise at fundamental frequency, which is transmitted as fluid borne noise in the discharge pipeline and also mechanical noise transmission to pipe work associated structures. The fundamental frequency generated depends on speed, number of pistons, vanes, gear teeth etc. This fluid borne noise can be attenuated in a mufti-chamber reactive silencer with choke tubes to form a low pass filter. Noise level to the extent of 15 to 20 dB could be reduced in this silencer. The silencer is generally designed as a pressure vessel as per AS-ME SEC VIII DIV I / IS 2825 or as per customers requirements.

The prime requirement of Roots / Twin lobe blower Pulsation Dampers is for both silencing and pulsation dampening or reduction of vibration.

As a pulsation damper collects the peak flow, and delivers it back to the system when the rate of mass transfer decreases, this averaging to a smoothness allows choice of pipe size to be reduce.

We offer HVAC Duct Silencers, which are normally rectangular in construction for A/C and ventilation ducting. These silencers are offered in standard dimension, which can be readily mounted on the existing duct. The silencers are offered in 500 mm and 750 mm length. Higher performance can be achieved by assembling more than one silencer in series depending on the noise level requirement. The predicted performance and the pressure drop across wide range of flow rates are available on request.