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Posts Tagged ‘control valve’

Control Valve Noise-Induced Vibration Solution

Posted in Final Control Element on Monday, December 18th, 2017. No comments yet
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A presentation from this past October’s Emerson Exchange conference on control valve vibration problems was recently published by ControlGlobal.com. The article, Ethanol plant learns why pipe cracks, describes the problem-solving path to address this situation. Emerson’s Shawn Anderson and Adin Mann joined in an ethanol energy producer’s presentation to share the story of how the […]

Reliable Control Valve Performance in Ethylene Production

Posted in Chemical, Final Control Element on Tuesday, December 12th, 2017. No comments yet
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Olefins, also known as alkenes, are unsaturated hydrocarbons, use to make many petrochemical products such as plastics. Olefin production, including ethylene, propylene and butadiene products, requires tight control for higher throughput, more energy efficient, and more reliable operations. In an article from The Chemical Engineer, Increasing Ethylene Conversion and Plant Reliability, Emerson’s Blake Coleman describes […]

Educational Video on Control Valve Cavitation

Posted in Final Control Element on Tuesday, March 28th, 2017. No comments yet
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Wikipedia defines cavitation as: …the formation of vapour cavities in a liquid – i.e. small liquid-free zones (“bubbles” or “voids”) – that are the consequence of forces acting upon the liquid. It usually occurs when a liquid is subjected to rapid changes of pressure that cause the formation of cavities where the pressure is relatively […]

Mitigating Cavitation and Outgassing Control Valve Damage

Posted in Emerson Exchange, Final Control Element on Tuesday, October 25th, 2016. No comments yet
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At the Emerson Exchange conference in Austin, Emerson’s Jonathan Vance presented Outgassing and Cavitation: Not So Good Vibrations. Here’s the abstract: Outgassing and cavitation are two of the most common issues associated with control valves. Both phenomena often occur in high pressure drop applications and result in excessive vibration; however, the solutions to combat these […]

How to Disassemble a Daniel Digital Control Valve

Posted in Final Control Element on Wednesday, July 13th, 2016. No comments yet
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Let’s continue our series of practical “How-to videos” with a closer look at disassembling a Daniel V788 digital control valve. The valves are used effectively in loading and offloading applications that require precise flow rate control and batch delivery of fluid products. In this 7:36 video, Emerson’s Jerome Lopez demonstrates the disassembly process that may […]