Blog - Post List

  • Valves Blog (no longer active): Educational Video on Control Valve Cavitation

    Jim Cahill
    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 low. When subjected to higher pressure, the voids implode and can generate an…

  • Valves Blog (no longer active): Control Valve Condition Monitoring Connected Services

    Jim Cahill
    As sensors and final control elements grow ever smarter with digital diagnostics and communications paths, the need to make sense of this data to improve safety, reliability and efficiency also grows. Not only is improved analytic software required to help spot trends and abnormalities, but also experts to help provide guidance to put this information into action. In this 5:07 video, Emerson Connected Services Valve…

  • Regulators - Blog (no longer active): Optimizing Gas Turbine Fuel Gas Supply

    Jim Cahill
    The mission of this blog has always been to bring the experts around Emerson to you. Many of these folks also share their expertise in our Emerson Exchange 365 global user community and with LinkedIn posts. I’ll highlight an example I saw today. Emerson’s Rossella Mimmi published a post, Gas Conditioning: Why, When and How . In it, she opens: Natural Gas has become the desired fuel for gas turbines used in modern…

  • Regulators - Blog (no longer active): Optimizing Gas Turbine Fuel Gas Supply

    Jim Cahill
    The mission of this blog has always been to bring the experts around Emerson to you. Many of these folks also share their expertise in our Emerson Exchange 365 global user community and with LinkedIn posts. I’ll highlight an example I saw today. Emerson’s Rossella Mimmi published a post, Gas Conditioning: Why, When and How . In it, she opens: Natural Gas has become the desired fuel for gas turbines used in modern…

  • Regulators - Blog (no longer active): Optimizing Gas Turbine Fuel Gas Supply

    Jim Cahill
    The mission of this blog has always been to bring the experts around Emerson to you. Many of these folks also share their expertise in our Emerson Exchange 365 global user community and with LinkedIn posts. I’ll highlight an example I saw today. Emerson’s Rossella Mimmi published a post, Gas Conditioning: Why, When and How . In it, she opens: Natural Gas has become the desired fuel for gas turbines used in modern…

  • Valves Blog (no longer active): Optimizing Gas Turbine Fuel Gas Supply

    Jim Cahill
    The mission of this blog has always been to bring the experts around Emerson to you. Many of these folks also share their expertise in our Emerson Exchange 365 global user community and with LinkedIn posts. I’ll highlight an example I saw today. Emerson’s Rossella Mimmi published a post, Gas Conditioning: Why, When and How . In it, she opens: Natural Gas has become the desired fuel for gas turbines used in modern…

  • Valves Blog (no longer active): Controlling Liquid Pipeline Surge Pressure

    Jim Cahill
    The RBN Energy blog is a must read for those in the oil & gas upstream, midstream and downstream industries as they analyze the trends and global dynamics impacting companies. Posts such as The Flows They Are A-Changin’ – Westward Natural Gas Flows Into Texas On The Rise describe the flow reversals in natural gas in the U.S. as LNG plants are built along the Gulf coast and vast amounts of shale gas are produced in the…

  • Valves Blog (no longer active): Selecting the Right Valve

    Jim Cahill
    At the Emerson Exchange conference in Austin, Emerson’s Tony Foster and Leah Stanley and Vinson Supply’s Robert Lange presented, Selecting the Right Valve for Your Application to Reduce Cost and Increase Performance. Their abstract: Selecting the optimum valve for the application can sometimes be a daunting task, even with a “simple” on/off valve, especially when the process operates at high or low temperatures and…

  • Valves Blog (no longer active): Mitigating Cavitation and Outgassing Control Valve Damage

    Jim Cahill
    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 critical applications vary greatly. This…

  • Valves Blog (no longer active): Safety Shutdown Valve Local Control Panel

    Jim Cahill
    For process manufacturers and producers with safety shutdown applications, local control panels are often installed to provide visibility and control actions to operators locally out in the process area. Actions can be taken at these panels to initiate an emergency shutdown. I caught up with Emerson’s Riyaz Ali about how these local control panels work with safety shutdown valves (SSVs) and the digital valve controllers…

  • Valves Blog (no longer active): Testing Valves in Safety Instrumented Functions

    Jim Cahill
    Safety instrumented systems are a critical part of process manufacturers and producers overall process safety management in protecting personnel, environment, equipment, property, reputation and image. In an Offshore Engineer article, Safety Instrumented Function loop ‘final element’ problems and solutions , Emerson’s Riyaz Ali describes the importance and ways to test the final control elements in these safety loops…

  • Valves Blog (no longer active): Stay on Top of Your Tanks

    Jim Cahill
    For storage tanks, controlling emissions is a high priority concern. A pressure vacuum relief valve (PVRV) is a critical component in managing pressure. Knowing when and for how long it opens to release pressure also helps to determine what emissions occurred. In this quick 1:52 video, PVRV with Smart Wireless Technology , Emerson’s Steve Attri , explains how wireless technology can help determine if the PVRV is…

  • Regulators - Blog (no longer active): Stay on Top of Your Tanks

    Jim Cahill
    For storage tanks, controlling emissions is a high priority concern. A pressure vacuum relief valve (PVRV) is a critical component in managing pressure. Knowing when and for how long it opens to release pressure also helps to determine what emissions occurred. In this quick 1:52 video, PVRV with Smart Wireless Technology , Emerson’s Steve Attri , explains how wireless technology can help determine if the PVRV is…

  • Regulators - Blog (no longer active): Stay on Top of Your Tanks

    Jim Cahill
    For storage tanks, controlling emissions is a high priority concern. A pressure vacuum relief valve (PVRV) is a critical component in managing pressure. Knowing when and for how long it opens to release pressure also helps to determine what emissions occurred. In this quick 1:52 video, PVRV with Smart Wireless Technology , Emerson’s Steve Attri , explains how wireless technology can help determine if the PVRV is…

  • Regulators - Blog (no longer active): Stay on Top of Your Tanks

    Jim Cahill
    For storage tanks, controlling emissions is a high priority concern. A pressure vacuum relief valve (PVRV) is a critical component in managing pressure. Knowing when and for how long it opens to release pressure also helps to determine what emissions occurred. In this quick 1:52 video, PVRV with Smart Wireless Technology , Emerson’s Steve Attri , explains how wireless technology can help determine if the PVRV is working…

  • Valves Blog (no longer active): Adsorption Process to Separate Fluid Components

    Jim Cahill
    Many techniques are used to separate impurities in fluids. One common method is to use the process of adsorption. In an online document, Control Valve Sourcebook — Chemical Unit Operations , adsorption is defined as: …a typical mass transfer operation used in process plants to remove or separate specific components of a liquid or gaseous mixture. The specific definition of adsorption is the adhesion of atoms, ions…

  • Valves Blog (no longer active): How to Disassemble a Daniel Digital Control Valve

    Jim Cahill
    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 be done during service repair, refurbishing or preventive…

  • Regulators - Blog (no longer active): Monitoring Storage Tank Emergency Vents

    Jim Cahill
    You will find low-pressure storage tanks in many industries including oil and gas, chemical, petrochemical, pharmaceutical, and food and beverage. Emergency vents have traditionally been used as the last line of defense in overpressure situations. In a new whitepaper, Benefits of Wireless Monitoring of Storage Tank Emergency Vents , Emerson’s Steve Attri describes how the ability to monitor pressure release conditions…

  • Regulators - Blog (no longer active): Monitoring Storage Tank Emergency Vents

    Jim Cahill
    You will find low-pressure storage tanks in many industries including oil and gas, chemical, petrochemical, pharmaceutical, and food and beverage. Emergency vents have traditionally been used as the last line of defense in overpressure situations. In a new whitepaper, Benefits of Wireless Monitoring of Storage Tank Emergency Vents , Emerson’s Steve Attri describes how the ability to monitor pressure release conditions…

  • Regulators - Blog (no longer active): Monitoring Storage Tank Emergency Vents

    Jim Cahill
    You will find low-pressure storage tanks in many industries including oil and gas, chemical, petrochemical, pharmaceutical, and food and beverage. Emergency vents have traditionally been used as the last line of defense in overpressure situations. In a new whitepaper, Benefits of Wireless Monitoring of Storage Tank Emergency Vents , Emerson’s Steve Attri describes how the ability to monitor pressure release conditions…

  • Valves Blog (no longer active): Monitoring Storage Tank Emergency Vents

    Jim Cahill
    You will find low-pressure storage tanks in many industries including oil and gas, chemical, petrochemical, pharmaceutical, and food and beverage. Emergency vents have traditionally been used as the last line of defense in overpressure situations. In a new whitepaper, Benefits of Wireless Monitoring of Storage Tank Emergency Vents , Emerson’s Steve Attri describes how the ability to monitor pressure release conditions…

  • Valves Blog (no longer active): Surge Relief for Oil and Gas Liquids Pipelines

    Jim Cahill
    Authors: Rossella Mimmi and Dave Seiler Petroleum commodity releases can have serious consequences, so ensuring pipeline integrity is crucial for operators. Pipeline integrity is not just about preventing incidents, but is a holistic approach to the prevention, detection, and mitigation of these undesired commodity release such as surge. In this two-part series, we will provide background information on surge relief…

  • Valves Blog (no longer active): Sizing Control Valves for Outgassing Applications

    Jim Cahill
    Ardent Photography . Some rights reserved. (CC BY-ND 2.0) Think about what occurs when you open a bottle of champagne. Immediately the pressure inside the bottle drops to atmospheric pressure. This is below the pressure that allows the dissolved carbon dioxide to remain in solution, thus the CO2 gas is released. This sudden release of the dissolved gas is referred to as “Outgassing.” You may have also noticed the rapid…

  • Valves Blog (no longer active): Reducing Valve-Induced Unplanned Downtime

    Jim Cahill
    Valves are the critical components in any process manufacturing and production operation that touches what is being produced. As such, they are subject to wear and tear. An ARC View report, Leveraging IIoT Technologies to Reduce Valve-Related Unplanned Downtime highlights key points from a presentation by Emerson’s Shawn Anderson at the ARC Advisory Group’s 20 th Annual Industry Forum. Here is the recap of the report…

  • Valves, Actuators & Regulators Blog: Reducing Valve-Induced Unplanned Downtime

    Jim Cahill
    Valves are the critical components in any process manufacturing and production operation that touches what is being produced. As such, they are subject to wear and tear. An ARC View report, Leveraging IIoT Technologies to Reduce Valve-Related Unplanned Downtime highlights key points from a presentation by Emerson’s Shawn Anderson at the ARC Advisory Group’s 20 th Annual Industry Forum. Here is the recap of the report…

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