Ask The Experts: Control valve for cavitating acids?

Experts weigh in on which control valve can be used that will withstand cavitating acids.

CT1609 ATE MN

Q: We’re facing the problem of cavitation in a control valve in very corrosive fluid (H2SO4 80% to 98%wt, or HCL 13 to 30%wt), so we’re considering PTFE-lined valves. The specific application is a level control valve for discharge into an atmospheric tank, so the differential pressure (DP) is high. The fluid is diluted HCL (HCL 13%wt, water 86.7%wt, methanol 0.3%wt). The pipe is 80 DN, Schedule Standard carbon steel with 3 mm PTFE lining. Minimum flow is 21 GPM; normal flow is 74 GPM; maximum flow is 84 GPM. Inlet pressure is 90 PSIA, DPs are 62 PSI, 60.3 PSI, 59.6 PSI at minimum, normal and maximum flow, respectively. Temperature is 122° F; density is 1,050 Kg/m3;…

Full Story

Resources

The latest trends in power systems

CG 1609 SOTEGFrom ensuring uninterrupted flows of clean electricity to monitoring generation and consumption throughout a facilityControl’s latest State of Technology report delves into the many aspects of power systems. Read the ebook

Béla Lipták on safety in oil & gas

bela liptak on safetyBéla Lipták discusses emerging industries aimed at exploiting unconventional fossil fuel deposits. Lipták’s critical view of the oil & gas industry explores the dangers inherent in its processes. Read the ebook

Voices: Ask The Experts

Ask The Experts: Control valve for cavitating acids?

Experts weigh in on which control valve can be used that will withstand cavitating acids.

Q: We’re facing the problem of cavitation in a control valve in very corrosive fluid (H2SO4 80% to 98%wt, or HCL 13 to 30%wt), so we’re considering PTFE-lined valves. The specific application is a level control valve for discharge into an atmospheric tank, so the differential pressure (DP) is…

Full Story

Most Recent

  • Ask The Experts: Control valve for cavitating acids?

    Q: We’re facing the problem of cavitation in a control valve in very corrosive fluid (H2SO4 80% to 98%wt, or HCL 13 to 30%wt), so we’re considering PTFE-lined valves. The specific application is a level control valve for discharge into an atmospheric tank, so the differential pressure (DP) is…

    Full Story
  • Commercial off-the-shelf technology to the rescue, again

    By Paul Studebaker

    I admit, it made me a little sick to put a Pokémon GO spoof on the cover of this issue of Control, backed up with articles about IIoT and self-driving cars. It seems like we’re being awfully trendy and, for process control, irrelevant. But I think not, and here’s why. Though it’s been about…

    Full Story
  • Plantman Go: The future of asset lifecycle modeling

    By Bob Sperber

    The process industries have traditionally faced chronic losses when designing plants and trying to maintain and manage asset-lifecycle data, especially during handovers from capital projects to operational plant-life phases. New solutions are available, including 3D computer-aided designs (CAD) and…

    Full Story
  • Taming temperature and pressure

    By Jim Montague

    Temperamental people are sometimes described as “blowing hot and cold,” and many process applications do the same. Handling and optimizing the changeability of temperature and pressure—if not outright volatility—is one of the cornerstone skills of the process control and automation field.

    Full Story

Latest Products