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  • Users: ajs83
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  1. ajs83

    ASME 31.3 testing requirements

    Does anyone know if testing is required on crimped hose connections to meet ASME 31.3 requirements.
  2. ajs83

    Water Vapor

    I am looking for the dew point temperature.
  3. ajs83

    Water Vapor

    The equation is: PV=nRT =mRT/M This translates to: Pv=RT/M where v is the specific volume and R is the universal gas constant. I do not know M or v. I am given: P=350 psi T=160 F Relative humidity = 40% How do you calculate molecular weight or the specific volume?
  4. ajs83

    Water Vapor

    It is asking me to upgrade to the professional engineering edition. Do you what this means.
  5. ajs83

    Water Vapor

    I know my relative humidity, temperature, and pressure, and I am trying to find the specific volume. I do not know the quality. Any help is appreciated.
  6. ajs83

    BPVC gasket materials

    I have a solid copper wire (.080 cross section) and used as a static face seal inside a groove on a flange. I am wondering what the seating stress is. According to ASME Section VIII BPVC on table 3-320 they list a ring joint gasket with a seating stress of 18,000 for iron or soft steel. Should I...
  7. ajs83

    compressor CFM

    I am not sure that I can apply the ideal gas law in high temperature and pressure conditions. I will be around 1000 psi.
  8. ajs83

    compressor CFM

    I used a sonic nozzle to measure the flow rate of a compressor. The nozzle was located at the discharge of the compressor. I have found my flow rate in CFM with respect to the pressure drop and temperature at the nozzle. To my understanding this is CFM (not ICFM, ACFM, or SCFM). I want to...
  9. ajs83

    ANSI B16.5 Flanges

    I know that the working pressure is 275 F. I was wondering what the factor of safety is included in this rating.
  10. ajs83

    ANSI B16.5 Flanges

    I am wondering what the factor of safety is on ANSI B16.5 150# stainless steel 300 series flange. My operating conditions are 120 F and 400 psi.
  11. ajs83

    Torque specifications for castings

    Does anyone know the yield stress of: G4000 gray iron casting with a tensile strength of 40 ksi 65-45-12 ductile iron casting with a tensile strength of 65 ksi
  12. ajs83

    Torque specifications for castings

    The casting has a tensile strenght of 40 Ksi and the bolt has a tensile strengh of 150 Ksi. Thus, shouldn't the threads on the casting fail before the bolt. I have an older version of the engineering handbook but I did not see anything on the internal thread strength of iron castings.
  13. ajs83

    Torque specifications for castings

    What is a good rule of thumb to determine the clamping force required with respect to the preload.
  14. ajs83

    Torque specifications for castings

    The depth of the tap is .94 inches and the depth of the drill is 1 inch. The plating on the bolt is yellow dichromate.
  15. ajs83

    Torque specifications for castings

    I have a 7/16 Grade 8 standard steel bolt with a tensile strength of 150,000 psi which threads into a casting made of either: Ductile iron type 65-42-12 -> tensile strength = 65,000 psi Gray iron type G4000 -> tensile strength = 40,000 psi I am looking for the torque specs of both castings...
  16. ajs83

    Welds on end caps/plugs.

    The 1470 psi rating on butt weld fittings are for schedule 80 pipe.
  17. ajs83

    Welds on end caps/plugs.

    Does anyone know if there is a weld that will withstand 2500 psi on the end cap/plug of a pressure vessel. The butt weld fittings are only good for up to 1470 psi. I am using a 5" diameter pipe.
  18. ajs83

    Pressure Tap and sensor location for orifice plate

    Does anyone have a copy of ISO 5167-1 and 2 that they could send to me. I would really appreciate it. Why are pipe taps no longer allowed?
  19. ajs83

    Pressure Tap and sensor location for orifice plate

    Does anybody know the correct spacing for pressure taps before and after an orifice plate. I read in a book that D and D/2, Flange, and corner taps were recommended. However, the same book also had a figure for the pressure tap locations at 2D and 2D. Also, where is the best location to mount...

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