Activity

  • Testing and Evaluating Pressure Regulator and Relief Valve Applications

    Jim Cahill
    Let’s close the week with peek into the labs where pressure regulator and relief valve testing is done. In this 4:21 second YouTube video, Emerson Lab Overview , the team managing the lines of regulator technologies provide a look at the test labs and share examples of testing performed. This testing on pressure regulators and relief valves helps to assure successful operation when the regulators are placed into service…

  • Pressure Regulator and Control Valve Best Fit Applications

    Jim Cahill
    The post Pressure Regulator and Control Valve Best Fit Applications appeared first on the Emerson Process Experts blog. Managing pressure is a fundamental control challenge for most process manufacturers and producers. A frequent question is whether a pressure regulator or control valve is best for a particular application. At last fall’s Emerson Exchange, I live-blogged a great presentation by Keith Erskine with Emerson…

  • Basics of Flame Arrestor Technology

    Jim Cahill
    The post Basics of Flame Arrestor Technology appeared first on the Emerson Process Experts blog. In process operations with combustible gases, flame arrestors are devices that help mitigate the risk of combustion. Wikipedia defines these devices : A flame arrester (also spelled arrestor ), deflagration arrester , [1] or flame trap [2] is a device that stops fuel combustion by extinguishing the flame . [3] Michael…

  • Automating Manual On-Off Valves

    Jim Cahill
    The post Automating Manual On-Off Valves appeared first on the Emerson Process Experts blog. Unless your plant or production facilities was recently built, chances are that your process has a mix of automatic and manual control. A common area for manual control are on-off valves used in many general purpose applications such as tank filling and emptying, filter backwash and blowback, and sequencing operations to name…

  • Valve Actuators for Safety Shutdown and Small Applications

    Jim Cahill
    The post Valve Actuators for Safety Shutdown and Small Applications appeared first on the Emerson Process Experts blog. One of the world’s leading spots to learn about new developments in industrial valves, valve actuators and fittings is the Valve World Expo . This event was held last month in Düsseldorf, Germany. During this event, Emerson launched two new products: the Bettis EHO Electro Hydraulic Actuator and…

  • Sizing Tank Blanketing Regulators

    Jim Cahill
    Steve Attri Global Product Manager In March of 2014, API Standard 2000 (Venting Atmospheric and Low-Pressure Storage Tanks), 7 th edition was released. In a whitepaper, Sizing Tank Blanketing Regulators Using the Latest API 2000 7th Edition Guidelines , Emerson’s Steve S. Attri describes how the latest changes affect the sizing of tank blanketing regulators. The whitepaper also includes how backpressure regulators…

  • Control Valve or Pressure Regulator?

    Jim Cahill
    Pressure is typically one of the most fundamental control parameters for process manufacturers and producers. Many types of final control elements including control valves and pressure regulators are used to perform this function. How do you decide which to use? Jake Buford Regulator Product Specialist I received an advanced copy of a paper being developed by Emerson’s Jake Buford . The paper, Choosing the Proper Pressure…

  • Solving a Pipe-Rattling Control Valve

    Jim Cahill
    As we close in on the Emerson Exchange conference October 6-10 in Orlando , I wanted to share a problem solving story. This story is typical of what you’ll find throughout the weeklong conference. Jeff Wilson Control Valve Reliability Specialist Jeff...

  • Valve Actuators for Corrosive and Hazardous Environments

    Jim Cahill
    For those non-mechanical engineers who have heard the phrase “rack and pinion” but are unfamiliar with the term, Wikipedia defines it : “Rack and pinion animation”. Licensed under Public domain via Wikimedia Commons A  rack and pinion  is a type...

  • Improving HRSG Availability by Better Steam Temperature Control

    Jim Cahill
    Author: Douglas Morris A while back, I wrote about using advanced control techniques to reduce steam temperature swings which can lead to boiler unavailability. Control improvements are one method to address this problem, but so is evaluating the mechanicals...

  • Reducing Pressure across Valves in Stages

    Jim Cahill
    In the third video in cavitation reduction series, Cavitation Mitigation Part 3 (2:52), Emerson’s Melissa Niesen describes how pressure reductions can be done in stages to avoid cavitating conditions in the liquid flow through a pipe. Melissa explains...

  • Preventing Cavitation in Liquid Applications

    Jim Cahill
    In the Fisher Valve & Instruments YouTube series on reducing cavitation in your process flows, the 3-minute second video, Cavitation Mitigation Part 2 shows a split line demonstration of cavitation. I highlighted Part 1 in yesterday’s post, Reducing Cavitation...

  • Reducing Cavitation in Piping

    Jim Cahill
    Emerson’s team responsible for Fisher Valves & Instruments products has a great series of YouTube videos on piping cavitation and ways to mitigate the damage that it can cause. Melissa Niesen, a research engineer, uses the Marshalltown Innovation Center...

  • Avoiding Mistakes with Wireless Valve Feedback

    Jim Cahill
    Many plants have manual valves because it is too cost prohibitive or difficult to automate from an installation and wiring perspective. In a Valve World April edition article, Wireless valves for control, Emerson’s Kurtis Jensen highlights the advancement...

  • Anti-Surge Compressor Control in Action

    Jim Cahill
    Compressor surge control, or better stated, anti-surge control, is always a popular subject here on the blog. Posts written years ago still remain highly viewed. Preventing surge is critical for centrifugal and axial compressors. Wikipedia defines it...

  • Improve Ethylene Conversion

    Kyley Leger
    Chemical industry sales engineer, Blake Coleman, is writing a three part series for valvemagazine.com . Part one : critical control valve applications in the furnace section of ethylene conversion are discussed. Feedstocks into the pyrolysis furnace can be ethane, propane, butane, gas oil, or naphtha , but no matter the source, the feed rate must be balanced with dilution steam to lower hydrocarbon partial pressure…

  • Safety Valve Positioners and Common Cause Failure Questions

    Jim Cahill
    If you work with pumps in your facility, you may be familiar with the Empowering Pumps site, a wealth of information to help you with these important assets in your plant. Founder Charli K. Matthews has launched something similar for valves, Empowering...

  • Howto video on on/off electric actuators

    Kyley Leger
    Be sure to check out the new video with Emerson oil and gas expert, Brad Healey. Topics include setup and calibration of on/off units for the Fisher easy-Drive electric actuators. www.youtube.com/watch Leave a comment and let us know if you found this type of video useful.

  • Fisher Valve and Instrument Howto Videos

    Jim Cahill
    In an earlier post, Howto Video on Pneumatic Valve Positioner Mounting, I shared the first in a series of “how to…” videos that the Emerson Educational Services team was developing. Apart from this initiative, my subscription on the FisherControlValve...

  • Howto Video on Pneumatic Valve Positioner Mounting

    Jim Cahill
    I knew when my son went to YouTube before coming to me when he needed to learn how to tie a tie–that howto videos were valuable, easily discoverable, and broadly used. I’ve share examples such as How To Install Micro Motion 9739 MVD Electronic Modules...

  • Critical Safety Shutdown Valve Actuators for United Kingdom

    Jim Cahill
    Imagine 30% of a country’s energy supply relying on two safety shutdown valves to flow natural gas and liquid condensate safely from offshore oil & gas production platforms to an onshore processing facility. It’s critical that the valve actuators reliably...

  • Providing Operators Process Control Valve Position Feedback

    Jim Cahill
    Control systems provide signals to control valves to regulate their position per the requirements of the control strategy. It is good engineering practice, especially for critical control valves to have valve travel feedback from independent devices such...

  • Differences in Fieldbuses and Ethernet Communications

    Jim Cahill
    Automation Engineers is one of the dynamic LinkedIn groups for automation professionals. A recent question was posed: Which is most effective ethernet or profinet I wanted to share Emerson’s Jonas Berge‘s response [I've inserted hyperlinks where he has...

  • Separate Versus Integral Final Element Accessories in Safety Applications

    Jim Cahill
    Final elements such as safety shutdown valves, emergency isolation valves, blowdown valves, etc., in safety instrumented functions (SIFs) are equipped with various accessories such as digital valve controllers, solenoid valves (SOV), and volume boosters...

  • Field Device Local Display in Process Safety Applications

    Jim Cahill
    One of the great things about conferences such as last week’s Emerson Exchange Americas conference is reconnecting face-to-face with people where some time has passed. I had the chance to connect with Emerson’s Riyaz Ali, whose expertise I’ve highlighted...

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