Valves, Actuators & Pump Control


Latest Articles

Quarter turn control valves
August 2003
In the process industry, control valves are often considered to be the most important element. For plant and personnel safety as well as to satisfy safety regulations, accurate control is now a necessity ...

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Safety relief valves tailored for applications
August 2003
Often used on vital services such as steam, air, gases, water and process fluids, the Bailey 700 Series of safety relief valves offers a broad range of protection against overpressure. The new Bailey ...

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Continuous dosing control
August 2003, Spirax Sarco South Africa
Mitech's Globe Control valves were designed to accurately dose reagents into the flotation process in a ring main dosing system at a local mine. The valves also monitored the process, reducing reagent ...

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Solutions for hygienic applications and corrosive environments
August 2003
Dupleix Liquid Meters (DLM) is offering the Bailey range of stainless steel pressure reducing and safety relief valves suitable for hygienic service and corrosive environments, clean steam and industrial ...

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Actuator series offers 1:10 control ratio
July 2003, News & Events, Security Services & Risk Management
G. Kromschröder has developed a new series of actuators. The first member of this series is the 3-point step IC 20 actuator, with butterfly valves for air (BVA) and for gas (BVG).    The IC 20 actuator ...

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Hygienic valves
June 2003, Spirax Sarco South Africa
A range of hygienic valves for use in the food, brewing and medical industries is available from Mitech. The locally designed and manufactured valves are mirror polished to discourage bacterial growth, ...

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Flanged ball valves
June 2003, Spirax Sarco South Africa, News & Events
The flanged ball valves from Valvetechnologies have a bubble tight shut-off to ANSI FCI 70-2 which is achieved with an integral downstream seat that is completely protected from the flow path. The valves ...

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Intelligent automation of on-off valves
May 2003, Valve & Automation
The NAF-SwitchIT intelligent on-off valve controller from NAF features on-line valve diagnostics as well as alarms

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Knife gate valves ensure trouble free control
May 2003
Selecting the correct valve for control applications normally poses many challenges to control engineers. In applications where fluid media with a significant solid content is difficult to control with ...

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Factors affecting control valve performance - Part 6: Conclusion - economic results
April 2003, Automation Control Solutions
The control valve assembly plays an extremely important role in producing the best possible performance from the control loop

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Lime dosing control valves
April 2003, Spirax Sarco South Africa
Mitech's locally designed and manufactured lime dosing control valves are erosion resistant and fit in the ring main. They have an anti-clogging design and are trim sized to suit the process data. Rated ...

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Ball valve endures the test
April 2003, Spirax Sarco South Africa
The standard metal-seated manual ball valve from Valvtechnologies is supplied with a four-year warranty when used for high-pressure water and steam isolation duties in power stations. This is of particular ...

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Ball valves with 100% shutoff
April 2003, Spirax Sarco South Africa
Valvtechnologies' metal-seated ball valves are designed to operate in high temperatures, under extreme pressures, in erosive environments. Their integral seat design improves performance over conventional ...

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Valves for low and high temperature gas applications
April 2003, Spirax Sarco South Africa
Mitech's damper valves are specifically used by the local industry and their largest damper supplied to date is 1,8 m in diameter and was made from stainless steel. The locally designed and manufactured ...

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Electric actuator - an easy solution for complex processes
April 2003
Complicated processes do not always require complex solutions. Utilising actuators for precise positioning of dampers and valves in process control can help to improve efficiency, reduce waste, and lower ...

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On the selection of valves
April 2003
Valve selection in the main is an arbitrary subject. It can be based on many factors such as tradition, operational experience, perceived suitability for process conditions, operational lifespan requirements, ...

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Electric valve actuators ready for the latest fieldbus systems
March 2003
The ELQ series plug in modules are used for a broad range of control options enabling the basic actuator specification to be easily extended to that of fully-fledged control valve actuator

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Control valve supplier for demanding applications
March 2003
DLM offers a comprehensive range of products sourced from leading international manufacturers, providing optimum solutions in a wide range of industries

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Factors affecting control valve performance - Part 5: Valve sizing
March 2003, Automation Control Solutions
When selecting a valve, it is important to consider the valve style, inherent characteristic, and valve size that will provide the broadest possible control range for the application

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Valves open new opportunities for the Cape
March 2003, Atelier SA, Surveillance
Internationally accredited valves from GSR Valve Technology now available ex-stock and with full local support in South Africa. The company has chosen to invest in full branches in the Cape, Port Elizabeth ...

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