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Recent content by ferdy

  1. ferdy

    plastic valves VS lined metallic valves

    Check with GF, www.georgfisher.com from Switzerland, they have plastic control valves for chemical industries.
  2. ferdy

    ASME III vs ASME IV

    Jimbo, The ASME BPVC is for all kind of vessels, all of them have different applications and different fabrication rules, some of them are very similar, but if you design a steam boiler, you have differences with a water boiler, a pressure vessel, or a separator, for this reason the Code has...
  3. ferdy

    ASME III vs ASME IV

    Jimbo, Section III are Rules for construction of Nuclear Facility Components and Section IV are Rules for Heating Boilers fired by oil, gas, electricity, or coal; two totally different areas, go to www.asme.org for details about the BPVC.
  4. ferdy

    Pipe EOL....

    When you design by B31.3, you have a design thickness for the pressure at the operating temperature, then you add the CA if you have, then you goes to the nominal thickness from where you multiply by 0.875 to have the useful thickness for your pipe, so, you have enough thickness for many years...
  5. ferdy

    Check valve located into piggable portion of a pipeline

    I always use check valves in oil pipelines (B31.4), after crossing rivers, swamps, or other sensitive areas, because is cheaper to have only one remote controlled valve before the crossing area, and the check at the other side that will respond automatically if something happens upstream. Read...
  6. ferdy

    Air Compressor Receiver Testing

    Yes Crittenden, any vessel that will work with a pressure over 15 psi is considered a pressure vessel and is under the ASME BPVC Section VIII, Div. 1
  7. ferdy

    Air Compressor Receiver Testing

    Hi Crittenden, you will need to check first if there are or not signs of corrosion atack inside or outside this vessel, then if you consider necessary you need a NDT to confirm or to check the thickness of the tank, and at last you will need to run a hydro or pneumatic test to be sure that is...
  8. ferdy

    Jockey pump question

    Connect the coil wires from the starter of the jockey pump thru the n.c. points in the main pump starters so when they start working, you jockey pump has a break. How do you control the main pumps?, by pressure controls or flow controls to keep them on line or off?. Just put all them in a logic...
  9. ferdy

    What is the min. distance tobe maintained between two welds in a pipe

    You must use the ASME B31 Standard where are posted all the certified answers to this kind of questions. It is the best and more professional way.

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