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Applying control valves on compressor anti-surge systems
In this technical paper, Ed Singleton outlines various points that should be considered before a control valve can be specified for compressor bypass service. The paper has generally been written at a...
Axial excellence in China's gas transmission network
China is a fast developing market, requiring the latest technology with very demanding standards for operations and reliability. In this technical article, Mokveld presents some benefits in using axia...
Control valve applications from all over the world
In 2008, Valve World took a look at the latest news from the control valves sector. The article shows a variety of control valve applications from around the world and also presents a novel control va...
Control valve testing and qualification for PSA service
John Bessman (Emerson Process Management) gives a technical overview of a PSA system, the typical valve requirements and customers’ experiences with OEM valves. He then discusses the Fisher PSA test p...
Control valves all over the world
Valve World gives you an update on the latest developments of the global control valves industry. Supplier infrastructure investments, technical developments, joint ventures, project orders and a case...
Control valves for pump protection service
This paper discusses the essential procedures involved in the application of control valves for the protection of pumps operating at low flow conditions. ...
Digital devices deliver for Duke and Millstone
Digital positioners are seeing broader use in the nuclear industry. They are typically faster and more stable than the analog devices they replace, which translates into simpler control schematics and...
Improving control valve performance
This technical article by Patrick Yost is about the packing service life of level control valves at Quad Cities Power Station, USA and how Kalrez Valve Stem Packing (KSVP) can help to prevent or stop ...
Knowledge of valve condition brought up-to-date through audit
In the spring of 2007 Metso Automation carried out an extensive audit of the installed equipment base and equipment inventory at Rautaruukki’s Raahe Works. More than a thousand Neles control and on-of...
Re-designing trims for boiler feed pump control valves
At the Ghazlan Steam Power Plant in Saudi Arabia, all twelve boiler feed pump recirculation control valves developed excessive seat leakage within a year of operation. This paper by Mohammed Al-Ismail...
Space-saver PRDS: pressure reducing and desuperheating valve in one
In most heating and process applications, saturated steam is a prerequisite. The main challenges for these applications are lowering costs yet boosting efficiency....
Streamlining control valve selection using EDE
Despite the use of electronic documents, simulation software and the like, the design, procurement, and purchasing of capital equipment is still a very labor-intensive process. The next major step fo...
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