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  1. dfteng

    European standard for face-to-face of valves

    What is the prevailing European standard for face-to-face of check valves - both wafer and flanged? Is EN 558 the standard or is there another?
  2. dfteng

    Cavitation Testing?

    I am trying to set up a test to rank several materials (probably a dozen or so different material samples) with regard to their ability to withstand cavitiation damage. I am looking for someone who has a flow test set up that can produce cavitation. Anybody know of a test lab or university...
  3. dfteng

    Commercially available pressure seals?

    I need to use a pressure seal to seal the body/bonnet joint for a high pressure, high temperature steam control valve application. Are there any pressure seals that are commercially available or is each one a "design to order" type of seal. I am looking for design guidelines for...
  4. dfteng

    Ferroxyl testing???

    Is anyone familiar with ferroxyl testing of titanium? I have a requirement to "ferroxyl test" titanium components before shipment. How is this accomplished? Is it a difficult test?
  5. dfteng

    Check Valves Waterhammer Characteristics

    There is no simple answer to the question about closing times because there are so many factors which influence the movement: localized pressures, viscosity of fluids, temperatures, constantly changing spring rates, etc. We simplify the problem to a basic spring-mass acceleration problem. This...
  6. dfteng

    sw wall thickness

    ANSI B16.11 has dimensions for SWE 3" & 4" including minimum wall thicknesses.
  7. dfteng

    valve minimum wall thickness

    As mentioned before, look at minimum wall thickness charts in Table 3 of ANSI B16.34. Also look in API 594.
  8. dfteng

    Getting started - need training

    What is the best method of training for getting started with Algor. Are the webcasts useful or is more traditional classroom training necessary? Any good experience?
  9. dfteng

    INCO718

    try www.specialmetals.com

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