Valves, Actuators & Pump Control


Latest Articles

The benefit of head-guided plugs on slurry valves
August 2018, eDART Group
“Good guiding of the plug head with three or more guide bars offers better benefits to valve performance than otherwise offered by the conventional method of fitting guides around the shaft,” commented ...

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Blowdown applications using multi-stage trim
July 2018, Valve & Automation
The Arca angle style control valves series 350 and 380 are proven under critical process conditions. If used in steam or other process gas applications at high pressure and temperature, in cavitation-free ...

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Sliding gate valves in control at PVS
May 2018, Macsteel Fluid Control
Belgium-based PVS Chemicals produces extremely pure chemicals for use in the semiconductor industry. One of the company’s outstanding innovations is the production of ultra-pure sulphuric acid. As the ...

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Test unit for control valves
May 2018, AT Technical Services & Supplies
Although plant designers tend to treat them as ‘necessary evils’, it is obvious that control valves play a key role in process quality and reliability. Extreme care must be taken to avoid costly premature ...

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Optimised pump ­performance
May 2018, SKF South Africa
Ignoring pumps is a risk because when these components break down, or run below optimum efficiency, the whole process suffers. Manufacturing and process companies are always under cost pressure, making ...

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Sealed bearings eliminate common failures in triple offset valves
April 2018, Valve & Automation
Bearing failures are among the highest root causes of failure in triple offset valves (TOV) for tight shutoff applications. This issue is directly attributed to the need to have metal bearings with very ...

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Proportional regulators optimise the use of compressed air
April 2018, ASCO
Precise and reliable dosage of compressed air is needed in the manufacture of container glass to ensure an optimal distribution of the molten glass within the mould. ASCO Numatics has developed a valve ...

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Selecting valves for proportional control
March 2018, ASCO
When choosing the right valve for the job, it is important to understand the demands of the application and the relative merits of each valve type.

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Should solenoid valves be classed as commodity items?
February 2018, ASCO
Engineers seeking operational longevity and high-quality performance should think beyond initial purchase price, as any other strategy is likely to cost far more in the long run.       The technology The ...

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Schubert & Salzer expands GS4 series
February 2018, Macsteel Fluid Control
Sliding gate valves now optimised for pressures up to 160 bar.

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Simple and easy to use, yet smart enough to automate
January 2018, Valve & Automation
The V&A iCon® valve positioner family combines simple calibration and easy operation with high-level integration capability.

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Precise control with segment disc valves
January 2018, Macsteel Fluid Control
Segment disc valves work on a very simple but effective principle. The central throttling elements – the segment discs that glide and seal against each other – are positioned in the valve body perpendicular ...

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Valve partner to the food industry
December 2017, Macsteel Fluid Control
When it comes to manufacturing or processing foodstuffs and drinks, having the right valve in the right place is essential if things are to run smoothly. Of course it is important to consider whether ...

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Special valves for steam systems
November 2017, Macsteel Fluid Control
Robust segment disc valves contribute to availability of industrial power plants.

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Deionisation of boiler feed water using an ion exchanger
November 2017, GEMÜ Valves Africa
In steam boiler systems, salts that have dissolved in the water lead to corrosion and deposits. To avoid this and depending on the operational mode and design of the steam generator, there are important ...

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Added reliability in triple offset valves
September 2017, Valve & Automation
Sealed bearings can eliminate common failures in critical oil and gas applications.

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Metso valves protect petrochemical complex in Oman
August 2017, Metso South Africa
Neles emergency shutdown valves safeguard demanding processes in Orpic’s new petrochemical complex.

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Pinch valves offer easy inline sleeve changing
August 2017
Afrivalve, a division of eDART Slurry Valves, now offers a simple patented design of the Red Roc Hi-Lift pinch valve that allows for inline changing of the rubber sleeve, without the use of lifting equipment. This ...

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Arca expands Ecotrol range
August 2017, Valve & Automation
The Arca Ecotrol 8C control valve has proven itself in the process chemical, oil and gas as well and power generation industries for many years. The unique cage retainer/clamping seat system enables simple ...

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Schubert & Salzer valves in ­packaging applications
August 2017, Macsteel Fluid Control
Angle seat valves and sliding gate valves from Schubert & Salzer are used in the production and filling of soft and alcoholic beverages (e.g. beer), milk products and mineral water. Steam is used for ...

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