Articles

on 'Valves'

81-100 of 121 < first | | | last >
  • Does Valve Size Matter? Ethernet or Modbus?

    Is it mandatory that control valve body size shall be not less than the half of the upstream nominal line size? If yes, why? Should we use Ethernet or Modbus in communicating to the H1\HSE-to-DCS link?

    02/05/2008
  • Regulating inlet fluid temperature

    In this installment of Ask the Experts, Béla Lipták and his cadre of leading experts in process automation, share tips on regulating inlet fluid temperature and controlling the stroking time of a control valve.

    06/07/2007
  • Control valves for slurry service

    In this installment of Ask The Experts, noted process control authority and CONTROL Columnist Béla Lipták and his cadre of automation experts answer a reader’s question regarding control valves for slurry services.

    04/09/2007
  • Final control

    What’s the latest on control valves? Editor in Chief Walt Boyes takes a look at the current marketplace for the final element that all control stuff is aimed at—the control valve that produces the end result.

    Walt Boyes
    03/07/2007
  • Something’s fishy at the water treatment plant

    The new Georgia Aquarium in Atlanta reuses millions of gallons of water and requires constant monitoring of its complex, closed-loop filtration system, ultimately leaving only small amounts of sludge.

    02/01/2007
  • Sensing leakage and emissions at the valve

    Process control authority Bela Liptak brings in specialists from his cadre of co-authors to answer a reader's question regarding future trends of sensing emissions at the valve.

    11/07/2006
  • Download the new control valve handbook here!

    The Control Valve Handbook, Fourth Edition, is now available online. This latest version presents information on control valve performance and new technologies, and includes input from experts in the field.

    11/01/2006
  • How to select control valves, Part 3

    When it comes to selecting and sizing control valves, gain and stability are key characteristics. The non-commercial valve selection chart in this article serves as a reference tool you can download!

    11/01/2006
  • How to select control valves, Part 2

    When it comes to selecting and sizing control valves and positioners, this article not only helps you pick the right one for the right job, but also includes a valuable valve selection chart you can download!

    09/12/2006
  • How to select control valves, Part 1

    When it comes to selecting and sizing control valves, the non-commercial chart in this article not only helps you pick the right one for the job, but also serves as a fantastic reference tool you can download!

    07/14/2006
  • The relay logic syndrome

    The coming together of nanotechnology, biology and medicine, information sciences, and cognitive sciences should give traditional automation and control devices new performance and capabilities.

    06/07/2006
  • The Bad Hall of Fame

    Control Talk columnists McMillan and Weiner induct some really bad instruments, final control elements, and systems into the Bad Hall of Fame, then proffer the Top 10 signs your life is like a Reality TV show.

    03/20/2006
  • Valve innovations aid nuclear slurry pretreatment

    Plug valves, stem extensions, and automation enable remote control and repairs in radioactive waste vessels at the Hanford Waste Treatment Project (WTP) in southeast Washington State.

    03/14/2006
81-100 of 121 < first | | | last >