Safety in combustion control
November 2004
Valves, Actuators & Pump Control
The Combustion Group (TCG) is offering the Series 8000 actuator valve from Maxon in the USA. Designed to withstand the abuse encountered in an industrial manufacturing environment, each shut-off valve (with its separate actuator) is individually factory assembled and tested prior to delivery. Its manufacturers believe that its non-production line approach contributes significantly to the ability to maintain high standards. Each valve is functionally tested to ensure the entire assembly meets the high standards of quality and safety.
An electric motor drives the valve open through a pinned mechanical linkage. The electric motor is turned off once the valve reaches the open position and will not be operated until the next opening cycle. Interruption of the electrical power releases a holding solenoid, causing the valve to close automatically. A robust top assembly provides substantial protection of the safety feature of the valve, preventing mechanical damage.
Various size actuators are provided to suit the valve body size with generous wiring space provided, including a top-mounted and covered terminal strip. All access covers feature metallic gaskets. The valve has a cast-iron, steel or stainless steel body, which can withstand temperatures up to 1425°C - well in excess of what would be experienced in normal operation.
Further reading:
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Emerson’s new TopWorx DVR Switchbox is an entry-level addition to the DV Series of valve position indicators. It combines a durable resin enclosure, compact size, and a patented cam design that provides a reliable valve position feedback for water and wastewater systems, food and beverage production lines, and industrial utilities.
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Dependable pumping for dewatering in hard rock mining areas
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Becker Mining’s Pumpor Vertical Spindle (PVS) pumps are hard at work on many mines throughout Africa, with many units installed recently in the Carletonville area, West of Johannesburg.
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In the world of construction a revolution is changing the status quo, the electrification of small and efficient construction machinery.
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Festo recently introduced its latest innovation in the form of the Valve Terminal VTUX. This invention marks the beginning of a new era in valve terminals, with its features making it an impressive solution for the future.
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Emerson has introduced a pilot-operated relief valve for installation on pressurised bullet tanks used to store liquid propane and anhydrous ammonia. This type of pressure relief valve is typically installed on tanks fabricated by OEMs for end users, engineering firms, or contractor customers.
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Valves, Actuators & Pump Control
In process manufacturing, especially hard mineral mining, dust particles are unavoidable. If this pervasive dust is not effectively removed, it can accumulate throughout mines, plants and other facilities, becoming hazardous to workers and equipment.
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Case History 191: The weakest link.
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Valves, Actuators & Pump Control
Which is the weakest link in a control loop? The answer, without any doubt is that, in most cases, the final control element is the weakest link.
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Emerson has introduced the new ASCO Series 327C solenoid valve, which features a direct-acting, high-flow design that provides superior flow-to-power ratio. It permits high flows at minimum power levels, making it ideal for use in power plants, refineries, and chemical processing facilities.
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Valves, Actuators & Pump Control
Little consideration is generally given to two-port valves because they are often perceived as simple devices that only open and close to control downstream fluid supply. Although this is mechanically true, choosing the optimal two-port valve for your application can make a big difference, saving space, weight and energy consumption.
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Emerson software optimises maintenance
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Valves, Actuators & Pump Control
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
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