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





High pressure drop across a valve creates excessive noise and leads to deterioration of the valve components. The Flo-Dyne Gas Diffuser Silencer is designed to share pressure drop with the valve, thereby substantially reducing this noise and wear.

To accomplish this pressure reduction the diffuser is designed to pass the flow through many small holes. Correct hole size and spacing are critical to diffuser performance. It is also important to match the diffuser flow capabilities to the individual system requirements. Flo-Dyne Controls custom design each diffuser for the particular valve and piping system it is to be used with.

The design system used to size Flo-Dyne Controls diffusers is the product of 30 years of experience with hundreds of diffuser/valve combinations. These diffusers are also component parts in Flo-Dyne Vent Silencers as supplied to hundreds of different customers.

Three standard models are available

The GDS and GDI types which are used immediately downstream of the system control valve.

The GDV type which is used for a system discharge to atmosphere.

Flo-Dyne Controls diffusers can be used in conjunction with any manufacture's valve to achieve a quieter noise environment while reducing requirements for expensive valve trim.

The all-welded design provides years of non-maintenance, trouble free service.

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