Welcome to Ventx Industrial Silencers

Ventx Limited is a major supplier of Industrial silencers and inline industrial silencers. We offer a bespoke design service to ensure each silencer is manufactured to meet the customer’s specific requirements. A Ventx industrial silencer uses a combination of diffuser design and an absorptive core section. Our designs are guaranteed to meet the noise attenuation required, and this guarantee extends to all workmanship.

Drawing on over 40 years of acoustic knowledge and 30 years of quality silencer manufacturing.

Atmospheric vent silencers are the essential component when venting steam, air, nitrogen or other gases and are designed to reduce valve noise to whatever level the customer needs. Ventx in-line silencers reduce noise and vibration from control valves and help provide a back-pressure to reduce valve size. Or the second type of in-line silencer offers a minimal pressure loss and would be used on compressors inlets.

Ventx design and suppler a cost effective silencer solution.

To design the right silencer we need:

• Flowrate
• Up-Stream Pressure
• Up-Stream Temperature
• Connection size and type
• Noise Level required

This will be enough information to get us started. Ventx will help with a positive solution, and provide an Industrial Silencer to do the job. Vent Silencers are seldom a catalogue selection; at Ventx we design each silencer to suit the customer requirements.

The silencers can be designed to provide a 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. Ventx silencers are manufacture only using good quality materials, and are offer in Carbon Steel or Stainless Steel materials. All units are fabricated by an Experienced and Qualified workforce and all our Industrial Silencers are guaranteed for performance and build quality. We manufacture only in the UK. Customer inspection is always welcome.

Silencer design is constrained by the flow conditions and the overall performance required. Ventx design each industrial silencer to reduce the noise level to the required sound pressure level specified by the customer. Ventx Industrial Silencers have a basic design principle that enables us to supply the best solution for the customer.

Image showcase (Mouse over images to enlarge)

Atmospheric Vent Discharge Silencer. This uses a combination of diffuser design and an absorptive core section. The gas and noise enter the silencer through a multi-hole diffuser where it is permitted to expand through many holes into the expansion chamber. These units can be designed to be mounted Vertically or Horizontally, and can have more that one inlet. Optional available are Bird Screens and Weather-Hoods.

Model CDS
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.

Model DLS
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.

Model AES, SES & GES
This type of silencer is specifically designed for use with Air, 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 fibreglass acoustical packing providing a broad range of attenuation in the mid to high frequency ranges.

A vent silencer is a device used to reduce unwanted noise created by gas or steam flow in a pipeline discharging directly into the atmosphere. This noise can be generated due to the high velocity flow through the valve and turbulence created around any obstacle in the line that suddenly restricts or changes the direction of flow such as valve or an orifice device. Vent silencers find wide applications in high pressure vents, steam vents, safety relief valve outlets, system blow downs, purge and flare outlets. The generated noise is a function of upstream pressure and temperature, type of gas, the valve size and type, plus the effect of down stream piping.

In-Line Silencers

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 Silencers are 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 Silencers are 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 or phone us.

Visit our website now to find out more about Ventx Limited