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  1. Brayman

    API 607 - Fire Testing

    I'm new to this and I'm getting involved with Fire Testing some butterfly valves and have a point of clarification that hopefully someone with more experience could guide me. We will be testing Ferritic (CS) butterfly valves and need some guidance as to the coverage this provides. Reading...
  2. Brayman

    ASTM B148

    Edstainless - many thanks for your input appreciated.
  3. Brayman

    ASTM B148

    Sorry ASTM B148 C95800. No haven't looked at microstructure, as the castings are out in the field at the moment. What we have under the chemical requirements of C95800 Iron - should be 3.5 to 4.5, actual 4.1 Nickel -m should be 4.0 to 5.0, actual 4.0
  4. Brayman

    ASTM B148

    I believe the requirement of the above standard is that iron content shall not exceed the nickel content, what i ask is, if for some reason the iron content did exceed the nickel what would the implications be for material performance in terms of corrosion resistance, for example. Does this...
  5. Brayman

    Aluminium Bronze AB2C in Chlorinated Water.

    No really trying to find out if anyone has any idea on what would cause this build up.
  6. Brayman

    Aluminium Bronze AB2C in Chlorinated Water.

    I am looking for some help with the use of Aluminium Bronze valve discs in Chlorinated Swimming pool water. We are currently experiencing a build of Calcium on the valve disc. Not a corrosion issue just a build up of calcium on the valve disc. See attachment. The values of the chlorine is...
  7. Brayman

    Aluminium B26 Alloy

    Does anyone have experience with either of the following materials in Marine / Seawater service. ASTM B26 Alloy 356.0 T6 and ASTM B26 Alloy 713. I believe that the former is OK for these services but believe that the latter whilst good for machining due to its high Zinc content is not good in...
  8. Brayman

    Flow terminology

    It was in a data sheet for Control Valves there was no legend. After some ferreting about I think I have located what it means although someone can correct me if i'm wrong. I believe it stands for Metric Tonnes per Day.
  9. Brayman

    Flow terminology

    Can anyone help with this, in Flow Control what does Te/D refer to
  10. Brayman

    Codes and Standards for leak testing valves

    Just a point BS6755 Part 2 has now been superseded and replaced by BS EN 10497 2004.
  11. Brayman

    API607 Valve qualification by materials

    We have firetested a Carbon Steel valve to the above std. My belief is that testing this valve ONLY qualifies us for valves as listed in ASME B16.34 Group 1 of Table 1. The problem we have is that we have a contract where have supplied Duplex Steel Valves as tested to API607, if my understanding...

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