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  1. langahl

    Sourcing of Kingsbury air hose coupling.

    Hi Folks, I am the mechanical engineer for a construction management company. Currently need to respond to an RFI from the contractor - the design calls for a '3/4 inch Kingsbury air hose coupling'. Would like to know whether any of you have heard about such couplings and where I can source...
  2. langahl

    What grade of Cast Iron ?

    Adrian, You can use Ductile Iron which has twice the strength of ordinary cast iron. Can't remember the specs. right now, but can easily check. Its advantageous to the extent that it will survive much knocks and 'bangs' of installation and maintenance. Regards, langahl
  3. langahl

    Fire Protection system

    This is specialized stuff. Did some work with a bulk petroleum storage plant in the Caribbean, acomplete system with foam. You will get best results by approaching one of the large fire fighting outfits like Angus. Besides the basic design of pipe run and location, pressure requirements and...
  4. langahl

    expansion joint failure

    soupsamich, First you may need to check that the expansion joints were properly installed; alignment as well as spacing between pipes. This will ensure stress free expansion joints. Secondly check for compatibility with the atmosphere and operating conditions in which the joint functions. That...
  5. langahl

    Vibration meast. in Hor. & Vert. directions ; why?

    bpr18, You need to know what levels of vibration are in each plane; horizontal or vertical. By using vectors, the counter measure for dynamic balancing can be calculated. Another reason - take for example a shell bearing on a modeartely sized fan. The bearing might be out of round (or oval)...
  6. langahl

    Purity levels of Nitrogen.

    For my project submittals review process, I need to know the standard for various purity levels of Nitrogen gas. Would appreciate an urgent response. An e-mail with the standard attached will be most helpful. Thanks, langahl@netscape.net
  7. langahl

    High temperature corrosion resistant metals.

    This message is for 'butelja' and 'jdsewell'. At first I thought it was a typo, I review project submittals - the client is asking for Hastelloy C and the contractor is providing Hatelloy. In checking on the 'net' I actually found Hatelloy mentioned (not too much data, thus the question and...
  8. langahl

    High temperature corrosion resistant metals.

    I need to differentiate between; 'Hatelloy C' and 'Hastelloy C'. Would appreciate all the assistance I can get. Regards, langahl
  9. langahl

    High temperature alloys

    I need to differentiate between 'Hatelloy C' and 'Hastelloy C'. Would appreciate all the assistance I can get. Thanks. langahl@netscape.net
  10. langahl

    How to start?

    Hi, I am in the US, but I think having been under similar circumstances (coming from overseas) you can approach the situation similarily. First and most important (as soon as possible) get your degree, grades and university programme accredited (if that is the right word). There are...
  11. langahl

    Piping flange thickness design.

    I am currently doing some work with titanium pipe (large diameters), how can I calculate the thickness of the flanges that I need to use on pipes of 3" to 12" diameter?

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