Valves, Actuators & Pump Control


Latest Articles

Safety shut-off valves for the oil and petrochemical industries
September 2003, Training & Education
The Maxon Corporation of the USA is a primary supplier of safety shut-off valves to the combustion industry. Known internationally for their reliability, longevity and compliance with international safety ...

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Slimline metallic pumps
September 2003, Atelier SA, Integrated Solutions
Hall 1, E 19 and 20 Contact Christine Lampret, 011 872 0330 Machined from solid metal, this compact and self-draining pump range is available in 216 stainless steel, aluminium and also exotic metals, ...

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Modular valve manifolds with enhanced functionality
September 2003, Security Services & Risk Management
Numatics SA has been specified on a very large project in the Richards Bay area involving ISO manifolds with Profibus DP manifolds. The company's approved G2-2 electronics allows for enhanced capability ...

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Quarter-turn electric actuators
September 2003, Security Services & Risk Management
The Series ELQ XP electric actuators are powerful, ¼-turn units with five sizes covering the torque range from 100 to 800 Nm. They incorporate high ratio drive (HRD) gearing which provides a compact backlash ...

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Control valves - more than a century of development
August 2003
As for the future, valve manufacturers are still working flat out to find materials that will create a truly frictionless valve

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Full-range position transmitter with digital sensing
August 2003, Valve & Automation
Westlock has merged absolute encoder sensing technology with loop-powered analog transmission to create the Spectrum DT full-range position monitor. The communication mode continues to be the standard ...

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Smart electro-pneumatic positioner
August 2003, Samson Controls
Samson is offering a smart positioner with communication capabilities. This Type 3780 smart i/p positioner is suitable for universal attachment to linear and rotary control valves by means of various ...

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Robust, user-friendly positioners
August 2003, Spirax Sarco South Africa
Mitech's positioners are modular in design and are suitable for a 20 to 100 kPa or 4 to 20 mA signals. Available as either single or double acting, the positioners are easy to set up and calibrate. Two ...

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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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