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





Gas compressors and ejectors create broad spectrum noise with distinct peaks at frequencies related to the motive stream nozzle dimensions. The noise levels generated by the high pressure ratios across the motive stream nozzle, can reach very high levels inside the pipe which, if left untreated may cause acoustic fatigue damage to the downstream pipework as well as exceeding local noise levels requirements for personel protection.

Designed for the short acoustic wave lengths produced by motive steam noise, each silencer is custom engineered using a computer program developed by Flo-Dyne. The program enables Flo-Dyne to match the silencer components, the packing, the passage with perforated acoustic facings to the acoustic and flow characteristics of the system.

ejector silencerPressure drop across the silencer is minimised through the use of profiled passage ways to reduce turbulence at section changes within the silencer.

Packing is protected by a triple layer sandwich of fibre glass cloth and stainless steel screen to prevent loss into the gas stream.

The silencer may be built as a pressure vessel to the requirements of British, American, European and Indian pressure vessel codes. Equipment may be CE marked to meet the requirements of the European Pressure Vessel directive.

Flo-Dyne's proven design and our capabiltiy to
predict and meet noise levels means that all of our equipment is guaranteed to meet your requirements, whether the ejector or gas compressor is exhausting to atmosphere or to high pressure in the downstream line.

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