Ventx Ltd - Industrial Silencer Manufacturer

Control Valve Silencer. This design of silencer employs the same principle of acoustic design as a vent silencer. This type of silencer is usually designed to a pressure code. Ventx offer to design to ASME B31.3, ASME VIII or PD5500.

Direct In-Line Silencer. These are designed to produce as little pressure loss as possible, but achieve the required attenuation using only an absorptive section. Ventx design this type of silencer to ensure a low-pressure loss. These units are often found on Compressor Inlet and Outlets and can be designed to a suitable Pressure Code.

Direct In-Line Silencers can be supplied as a simple acoustic core for inserting into the customers pipe work or vessel.

This type of silencer is specifically designed for use with Steam or Gas Ejectors. Ventx calculate the ejector noise and flow mixture.

The Flow Rate of the gas determines the diameter of the silencer so that the gas can safely pass through without eroding the acoustical packing or regenerating noise. The silencer length is governed by the degree of noise reduction to be achieved.

 A Ventx Silencers uses a combination of diffuser design and an absorptive core section. The gas and noise enters the silencer through a multi-hole diffuser where it is permitted to expand through many holes into the expansion chamber.
The diffuser also provides a frequency shift to higher frequencies, which are best attenuated by the absorptive section. The gas then passes through this absorptive section, which consists of perforated flow passages surrounded by dense long strand fiberglass acoustical packing providing a broad range of attenuation in the mid to high frequency ranges.

An in-line silencer employs the same principle of acoustic design as a vent silencer. A main consideration with in-line noise is to reduce the vibration caused by the valve noise, as noise is basically air born vibration.

There are two types of silencer for in-line applications;

• Control Valve Silencersare designed to provide a pressure drop or back pressure and are primarily used in conjunction with a control valve. The attenuation is achieved with a combination of diffuser design and an absorptive section.
• Direct In-Line Silencersare designed to produce as little pressure loss as possible, but achieve the required attenuation using only an absorptive section.

Ventx can manufacture both types of In-Line silencer for use in pressurized systems and to a suitable pressure design code.  There are a number of variations with In-Line silencers, and we can design and supply just Diffuser Silencers or Insert Silencers to suit your application.

Ventx silencers are also designed to provide a required back pressure, which can help when selecting a valve and this is why our silencer inlets are always designed and manufactured with reference to a design code. 

If you think Ventx Industrial Silencers can help you, please email us with your silencer requirements at enquiry@ventx.co.ukor phone us on +44 (0)1923 238397.