When extreme, it threatens employee's safety and wellbeing. It causes "bad-neighbour" situations. And potentially, it warns of valve instability and pipeline vibration that can shorten equipment life. In answer to these valve noise problems, control valve manufacturers now offer special-design valve trims that employ various mechanisms to reduce gas, steam or vapour flow noise levels. While these special-design noise abatement trims may prove effective, their maximum performance levels fall short of that demanded by high-pressure drop and high flow rate installations.
Alpret claim to have a solution that meets these needs: Whisperflo trim is said to be "a new concept in multipath, multistage, acoustic energy management". It reduces valve-caused aerodynamic noise by as much as 40 dBA. The performance capability of Whisperflo trim surpasses conventional noise trims by 5 to 10 dBA. The attenuation ability that delivers predicted noise levels consistently, avoiding the costly need to recalculate product offers a noise and retrofit valves in order to meet performance promises.
Six techniques were used in order to achieve this performance, these being:
* Unique passage shape.
* Multistage pressure reduction.
* Frequency spectrum shift.
* Exit jet independence.
* Velocity management.
* Complementary body design.
Now customers can bring aerodynamic flow applications, existing or proposed, into compliance with mandated noise limitations. Plants or installations can be "good neighbours" to adjacent, populated areas. Employees' hearing safety can be enhanced. Another benefit would be the gaining of improved control of severe service, high pressure, high flow control loops.
New uncompromisingly simple flowmeter line for processes Endress+Hauser South Africa
Flow Measurement & Control
The demand for simplicity in commissioning, operation and maintenance in industrial process plants has increased significantly in recent years. The new Proline 10 range of flowmeters from Endress+Hauser meets this requirement without compromise, because simplicity is the top priority.
Read more...Loop signature 29: Averaging or surge level control
Editor's Choice Flow Measurement & Control
There are many processes where it is undesirable for the load to suddenly change quickly, for example in the paper industry. Examples of level control have involved reasonably fast tuning. An example of a level loop tuned this way and responding to a step change in setpoint is given.
Read more...Uncompromising flow rate measurement Burkert South Africa
Flow Measurement & Control
Bürkert’s FLOWave is a hygienic and safe flow measurement solution with many benefits for pharmaceutical or food production processes.
Read more...Electromagnetic flow measurement Siemens South Africa
Flow Measurement & Control
The SITRANS FM electromagnetic flowmeters from Siemens deliver high-precision volume measurement of electrically conductive liquid applications – from water, wastewater and irrigation to hygienic processes and even mining slurries with magnetic particles.
Read more...ABB unveils next generation of electromagnetic flowmeters ABB South Africa
Flow Measurement & Control
ABB has launched its latest generation of electromagnetic flowmeters, bringing unmatched accuracy, connectivity and flexibility to industrial and utility applications.
Read more...Precision measurement for ultra-pure water systems
Flow Measurement & Control
[Sponsored] Ultra-pure water (UPW) is essential in industries where even minor contaminants can impact product quality and process integrity. Anton Paar’s L-Cor Coriolis mass flowmeters provide a highly accurate and hygienic solution by directly measuring the mass of the liquid using the Coriolis effect, ensuring a high level of cleanliness.
Read more...Inline process solutions for gold mining Anton Paar
Flow Measurement & Control
[Sponsored]The extraction and processing of gold ore requires precision and efficiency to maximise yield and minimise losses. Automation and continuous monitoring of critical process steps are essential to ensure optimal production. Anton Paar offers advanced inline measurement solutions which enable full automation and real-time monitoring of key steps in gold extraction and processing.
Read more...Magnetic-inductive flow sensor ifm - South Africa
Flow Measurement & Control
The SMF magnetic-inductive flow sensor revolutionises liquid and creamy flow measurement. With IO-Link, it enables digital data transmission, eliminating blind spots in production.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version