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





Lobe type and multi-vane compressors generate high-energy noise levels at the fundamental and initial harmonic frequencies. With no absorptive pack, rugged construction and high quality materials, this multi-chamber design is tuned to handle these frequencies and is very effective in reducing tonal radiation from the pipe work connected to these machines.

Using a powerful computer design program Flo-Dyne can predict and analyse the blowersilencerperformance of each silencer application, Flo-Dyne engineers are able to adjust internal dimensions and observe the effects on performance to ensure optimum performance is achieved.

Internal dimensions can be adjusted to observe the effects on acoustic performance and pressure drop.

Pressure vessel fabrication techniques are used to ensure absolute integrity in operation. It should be remembered that although at the line connection the flow is smooth with the noise and pulsation attenuated by the silencer, at the machine connection there are still high levels of noise and pulsation emanating from the machine.

Construction materials are chosen to match the process gas and duty but will typically be ordinary carbon steel and stainless steels.

All welding is performed by ASME IX qualified welders with penetrant dye, magnetic particle, radiography and ultrasonic examinations available.

Post weld heat treatment is often necessary on larger units to relieve the built in construction stresses.


The graph shows actual measured dampener performance that equates to over 30 dB reduction in pulsation level at the fundamental pulsation frequency and the first harmonic at a flow rate of 29,000CFM @ 68°F from a rotary blower.



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