At the heart of a power station are the steam turbines, which serve as generators or mechanical drives for pumps und compressors. For their operation, a network of valves is built around the turbines. Steam inlet valves direct the steam flow into the turbines, while extraction valves withdraw the steam from the various intermediate stages. Gland steam and leakage steam control valves provide the labyrinth seals in the hub areas with the steam that seals the turbine shafts towards the turbine housings. Drain valves drain accruing condensate from the steam pipeline to the condensate collector.
For the Pingshan project, ARCA delivered the steam supply control valves, the seal steam control valves and the drain valves of the steam turbine. The supply control valve in DN 400 controls the steam flow from the re-heater into the turbine. Equipped with a hydraulic actuator suitable for a pressure of up to 140 bar, with an actuating time during control operation of 20 seconds, and for quick close and open has a time of 2 seconds and 5 seconds respectively. The actuator in the picture can provide a maximum actuating force of 44 kN. Silencer discs at the valve outlet ensure a low-noise operation.
Turbine manufacturers worldwide count on the know-how and experience of ARCA for the design and delivery of such valves. Together with customers, the company develops solutions for efficient turbines with valves suitable for temperatures up to 650°C and nominal pressure up to PN720/Class 4500.
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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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Parker Hannifin is introducing the enhanced version of the proportional cartridge throttle valve series, TFP. The new pilot valve further reduces the step response times by up to 30%, making the TFP the fastest valve in its class.
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Leaking valves in industrial plants not only lead to loss, safety risks and possible contamination and pollution, but also result in high economic costs. Therefore, valves in hazardous areas require regular proper inspection and preventive maintenance to ensure their functionality.
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With abundant sunshine and wind, southern Africa is perfectly positioned to become a global powerhouse in green hydrogen production. Two key projects are already in advanced stages of development in Namibia. KSB has identified the vast potential of these types of projects in southern Africa, and through its KSB Pumps and Valves subsidiaries in Namibia and South Africa is investing heavily in bringing the right skills to the region.
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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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Cashco has long been a trusted name in industrial control solutions, offering a broad range of regulators and control valves designed to meet the rigorous demands of various industries. There are two key Cashco product lines, its regulators and the Ranger QCT control valve.
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BMG delivers state-of-the-art valve solutions to diverse industries across Africa, in collaboration with InterApp, a global leader in the design and manufacture of high-quality valves.
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