Valves, Actuators & Pump Control


Latest Articles

Main steam stop valve
October 2006
The Spirax Mitech Compound valve consists of a 200 mm and an 80 mm angle valve joined together to supply steam to a power generation turbine. The large valve is fitted with a quick-opening trim, while ...

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Compact two-port control valves
October 2006
Spirax-Sarco's compact LE range of two-port control valves and PN9000 actuators have been designed with the needs of equipment manufacturers in mind. The valve range features a self centring clamp in ...

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Universal valve controller for servo-positioning valves and dampers
August 2006
Novus, a supplier of industrial automation products, manufactures the N2000-S universal valve controller. This controller is dedicated to servo-positioning valves and dampers by a linear output or two ...

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Submersible pumps effective in mining applications
August 2006
High efficiency compact EIM submersible pumps are, according to the supplier, a popular choice for both open pit and underground mines, having given many years of service to the South African gold mining ...

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Clean service control valves for contamination-free applications
August 2006
Spirax-Sarco's Steri-Trol is a reliable, pneumatically operated, two-port angle pattern clean service control valve. The angled design allows the valve to self-drain, ensuring that there are no areas ...

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Custom-designed pneumatic rotary actuators
August 2006
The Spirax-Mitech pneumatic rotary actuator range is custom-designed to suit various applications up to 250 000 Nm torque. The low maintenance units are available with either a double crank mechanism ...

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Cutting costs using self-operated regulators
June 2006
This article outlines how cost effective self-operated regulators can be

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Enhanced reliability for final elements
May 2006
New developments on actors and relevant approvals are presented as well as instrumentation with new functionality to support diagnostic coverage, different topologies for connection to SIS and BPCS are discussed

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'Through-going' gate offers unrestricted flow
May 2006, Dupleix Liquid Meters Flow Control (DLM)
Dupleix Liquid Meters (DLM) is offering valves that were developed to cater to specific services where conventional valve designs proved to be inadequate. For instance, fluid media with significant solid ...

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Actuator position feedback transmitter
May 2006
The Spirax-Mitech positioner range can be fitted with either a digital or full analog position feedback transmitter. As the transmitters are attached to the lid of the positioner's enclosure, they can ...

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Diffuser plates
May 2006
The locally manufactured Spirax-Mitech diffuser plates are designed for use with its globe control valve on high pressure drop applications for gases and vapours. Installed downstream from the valve, ...

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Complete range of butterfly valve solutions
March 2006
Interapp, represented in South Africa by OMSA Valves and Instrumentation, offers a complete range of butterfly valve solutions. From the Aquaria valve, designed for cost-effective water applications to ...

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Corrosion resistant butterfly valves
March 2006
Tyco Valves & Controls, a leader in the design and manufacture of corrosion resistant valves, has extended its range of Neotecha NeoSeal butterfly valves to include a new series of TFM valve seats and ...

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Valve design aspects for critical petrochemical applications - Part 3
February 2006
The key discussion in this section centres around the 'strong actuator force' versus 'low actuator force pressure balance' sizing philosophy

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Flexible control valve and actuator system
February 2006, Automation Control Solutions
Fisher's Design GX meets the requirements of both ANSI and EN standards. The valve body covers eight sizes between ½-inch and 6-inch (DN 15 and DN 150) and pressure classes are available in Class 150/300 ...

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Enhanced, intelligent valve actuators
February 2006, Valve & Automation
Rotork's IQ intelligent electric valve actuator - a market leader since its introduction in 1993 and now in its second generation - has been further improved with the introduction of the IQ Pro. IQ Pro ...

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Globe control valve
February 2006
Spirax Mitech's standard Globe Control Valve is used for controlling all types of fluids and gases including steam. The standard range of valves covers the range from 15 mm up to 400 mm. Due to its modular ...

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Rotary pneumatic actuators
February 2006
Spirax 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 ...

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Largest to-date pipeline shutdown actuator
February 2006, Valve & Automation
Rotork Fluid System has built Rotork's largest ever pneumatic actuator, for delivery to a pipeline project in Thailand. The model GP350 spring return actuator will operate a 42 inch Class 900 Cooper Cameron ...

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Choke valves for the North Sea
February 2006
Mitech has just received a repeat order for a second 150 mm choke valve to be used on an unmanned platform off the English coast. The valve is made of WCB and has a pressure rating of ASME 1500#. The ...

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