Vent Silencers

Steam exhausts
Air vents
Process Gases
Relief valves
Safety valves
Bypass valves
Blow down vents
High temp vents

Diffuser Silencers

Atmospheric vents
Control valves
Pressure let down
Steam Vents & Process Vents
Pressure regulators

In-Line Silencers

Control valves
Orifice plates
Gas ejectors
Steam ejectors
Gas compressors
Axial compressors
Centifugal compressors
Roots blowers and
Multi-lobe blowers and exhausters

Surge Tanks

Drinking Water
Raw water
Foul Water

Ancillary Surge Controls & Equipment

Air Compressors
Electrical Controls Control Panels
Level Controls

Flo-Dyne Installation & Commissioning Services

Pipeline Surge Analysis & Reporting

Refurbishment and repair

Surge Vessels
Compressor systems
Control panels

Pulsation Dampeners

Roots Blowers
Multi-Lobe Blowers
Recip compressor
Recip pumps Suction Lines
Discharge Lines

Acoustic Filters

Hydraulic pumps
Refrigerant Compressors
Air Conditioning Compressors

General Information

Quality Registration to

Surge Tanks


Vent Silencers


Pulsation Dampeners


In-line Silencers

Blower Silencers





Compressor silencers and inline compressors silencers are often specified for centrifugal and axial compressors which create broad spectrum noise with peaks at the blade passing frequencies. In addition many piping systems suffer from propagation of low frequency noise both within the gas stream and along the pipewall, which if not effectively attenuated can result in the acoustic performance of the silencer being compromised. The custom designed Flo-Dyne compressor inline silencer will treat these special noise problems to give a highly effective silencing solution.

The blade passing frequency of a high speed centrifugal or axial compressor will often fall somewhere within the 1KHz to 4KHz octave bands. The frequencies within these octave bands result in wavelengths which are comparitively short especially when contrasted with the wavelengths of the low frequency noise which propagates along the pipewall.

compressor in-line silencerOptimum design of a compressor silencer requires not just an engineering solution to the acoustic baffle as well as the containing shell.

Flo-Dyne engineers will custom design the entire acoustic baffle and the containing shell providing an optimum total silencing solution thereby ensuring that the silencer is at its most effective during operation.

Failure to provided the correct balance of:

Fibre diameter;
Fibre Bulk density;
Fibre composition;
Perforated plate hole diameter;
Perforated plated hole spacing;
Perforated plate thickness;
Flow passage configuration;
Flow passage width / length
Packing depth;
Packing protection measures, mesh / cloth screen properties;

Will result in poor acoustic performance and high pressure drops.

compressor silencer on testIn-line compressor silencer being prepared for its hydraulic proof test.

This silencer was designed for operation at 200 BarG and to provide a guaranteed 20 dB(A) overall attenuation with specific attenuations specified for each octave band from 63hz through to 8KHz.



Contact us now with your requirements.

UK office:
Tel: +44 (0) 1494 770088
Fax: +44 (0) 1494 770099
Email: sales@flo-dyne.net

India office:
Tel: +91 77 384 97 300
Email: sales-india@flo-dyne.net