Valves, Actuators & Pump Control


Latest Articles

Rotary control valves for olefin plants
February 2007, Valmet Flow Control South Africa
In addition to producing low emissions, rotary control valves have also proved that they can handle the vast majority of petrochemical industry applications

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Plastic control valves for chemical applications
February 2007, C&F Technologies
A unique range of all-plastic proportional control valves manufactured by Collins Instrument of the USA for process control applications is available from Randburg-based company C&F Technologies. Collins ...

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Pneumatic diaphragm actuators
February 2007
The Spirax-Mitech PN9000 series pneumatic diaphragm actuators are a compact range of linear actuators that are available in three diaphragm sizes for matching the requirements of valves at various differential ...

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Spirax-Mitech valves exported to UK
February 2007
A specially designed and locally manufactured Spirax-Mitech 12" (30,5 cm) Angle Valve has recently been exported to the UK. The valve is used to test a variety of pumps, the largest of which produces ...

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Low pressure, flanged valves to ANSI 150-600
February 2007
Valvtechnologies' V1-2 valve applies the company's core design concepts to industrial processes where lower pressure classes are more common. This valve is designed for critical isolation applications ...

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Valvetop DXP 4-20 mA position transmitter
January 2007, Switches International
Topworx has recently added a new member to its popular DXP range of valve controllers. This unit is ideal for the oil and gas industry and other applications that require precise position feedback. The ...

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How to select a valve controller
December 2006, Switches International
Process manufacturers are faced with multiple considerations when choosing a valve controller/switchbox that will best meet their application needs. Key aspects to consider include product endurance in ...

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New valve technology sparks new robot design
October 2006, Festo South Africa
Using the latest Festo valve terminal technology, a German robot manufacturer has designed highly economical function packages for its industrial robots that allow plastic injection moulding machines ...

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Clean service control valve
October 2006
The new Steri-trol clean service control valves from Spirax Sarco are pneumatically operated with a two-port angle pattern. The angled design allows the valve to self-drain, ensuring that there are no ...

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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, Samson Controls
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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