Valves, Actuators & Pump Control


Latest Articles

Valve communication module
January 2006
StoneL's Eclipse valve communications module features dual integrated solid-state sensors with optional communications integrated into a sealed module. The function module and trigger/indicator attach ...

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Valve design aspects for critical petrochemical applications - Part 1
December 2005
During a text-book start-up process, a trouble-free commissioning is guaranteed by replacing any critical valves with fittings and flushing the plant beforehand

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Universal pump control with new pump manager
December 2005, Endress+Hauser South Africa
With the introduction of its RMM621 compact DIN rail mounted device, Endress+Hauser now offers a universal pump control solution that includes remote transmission of counter and alarm conditions. The ...

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Reliable actuators for giant power station
December 2005, Valve & Automation, Integrated Solutions, Products & Solutions
Rotork Jordan electric modulating valve actuators have been introduced at the four GW Drax Power Station during the latest part of the station's environmental upgrade programme. The Jordan actuators will ...

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Swimming pool processes
December 2005
Water treatment plays a crucial role in swimming pool processes. The pool water is cleaned mechanically by reversible flow filters and then sanitised. Sanitisation is most often carried out by adding ...

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Quality plastic valves
November 2005
Praher Valves, represented in South Africa by OMSA Valves and Instrumentation specialise in the supply of quality plastic valves for a variety of industries such as water treatment, sewage and effluent, ...

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2,4 m damper
November 2005
Spirax Mitech has recently engineered and supplied a 2,4 m hot gas damper to one of the steel mills. The medium is gas at 200°C containing potassium chloride particles. The valve is designed to be open ...

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Valve amp nostalgia
November 2005
The accompanying photograph is of a recently constructed audio valve amplifier designated the 'The Mullard 5-20'. The amplifier was constructed according to the publication 'Mullard Circuits for Audio ...

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Valve solves problems with protective pipe linings
October 2005
Tyco Valves & Controls, a business unit of Tyco Flow Control, has introduced an innovative new wide-bodied butterfly valve to overcome the problems commonly experienced with valve operation as a result ...

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Guaranteed leak-free operation in corrosive services
October 2005
The highest possible resistance to corrosion with the advantage of bubble-tight shut-off is offered by Neotecha type NTB and NTC PFA lined ball valves from Tyco Valves & Controls, a business unit of Tyco ...

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Automatic partial stroke testing prevents disasters
September 2005, Valmet South Africa, Flow Control
IEC standards are forcing instrumentation technicians to significantly increase the frequency of their safety valve testing procedures

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Prevention is cheaper than cure
September 2005, Dupleix Liquid Meters Flow Control (DLM)
The merits of reducing valve stations and their associated problems.

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Valve automation solution for safety systems
September 2005, Emerson Automation Solutions
Emerson Process Management's Valve Automation Division has introduced SIL-PAC, a final control solution as part of a safety-instrumented system (SIS), designed to help protect against process upsets or ...

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Actuators for jet fuel storage and refuelling
September 2005, Valve & Automation
Rotork IQ intelligent electric valve actuators are performing crucial leak detection and isolation duties on a new automated jet fuel storage and refuelling installation (JFSI) at a strategic NATO airbase. ...

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Super air nozzle
September 2005
Exair's new 1/2 NPT Super Air Nozzle delivers 1,5 kg of strong blowing force when mounted 300 mm away from the target. The force is more than four times that of ordinary air nozzles, making it suitable ...

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Actuator delivers maximum torque/air consumption
September 2005, Dupleix Liquid Meters Flow Control (DLM)
The Compact II pneumatic quarter turn actuator, supplied by Dupleix Liquid Meters (DLM), has been developed to be simple, reliable, and efficient using a patented rack and pinion design. Four separate ...

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Anti-surge control valve solutions
August 2005, Automation Control Solutions
By looking at the latest technologies in valve and actuator designs, whilst coupling this with smart positioner technology and good accessory selection, optimal performance from an anti-surge system can be achieved

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Enhanced reliability for final control elements
August 2005
This article examines new developments in actuators as well as instrumentation with new functionality to support diagnostic coverage, with different topologies for connection to SIS and BPCS

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Pneumatic rotary actuators
August 2005
Mitech's Pneumatic Rotary Actuators feature a choice of mechanisms between crank arm and scotch yoke designs. The crank arm is suitable for modulating control and provides high run torques, low friction ...

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New technology helps with valve design
August 2005
Mitech is now making use of engineering fluid dynamics (EFD) software to assist with the design of its special control valves. One example of the use of this technique is for a special valve recently ...

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