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  • Users: joeswoes
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  1. joeswoes

    Composites 101

    Can anyone recommend a seminar for a complete newbie in the field of composites that offers a broad spectrum of introductions from materials to processes to applications ? And, most importantly, a seminar which is not intended to sell someones products or services.
  2. joeswoes

    API 607

    I want to submit a ball valve for fire testing per API 607. As the water is trapped inside the closed ball during the test, and thermal expansion can lead to a bomb, wouldn't the ball require an upstream vent and thus be a uni-directional product ? Also, our valve is non-metallic. Metallic...
  3. joeswoes

    chloride/seawater stainless steels

    I am familiar with the addition of molbdenum to improve stress corrosion crack resistance of austenitic stainless steels. However, I request this Boards expertise in suggesting to my customer, what readily avaiable off-the shelf stainless steel pipe is suitable for seawater. They currently...
  4. joeswoes

    tight rubber covering needed

    We're wanting to have a heavy wall (.125"-.150") rubber covering applied over corrugated stainless steel tubing to provide a soft smooth surface. The rubber must be tightly applied, as the tubing is bent and the rubber cannot "crease" or "fold" on the inner surface of the bend. Nylon, silicone...
  5. joeswoes

    PTFE packing options

    Does anyone have any strong feelings about the relative merits of chevron vs cup and cone PTFE packing ? Why do the two co-exist, are there applications one is better ? Thanks in advance ; Joe
  6. joeswoes

    Flow Meters

    Can someone direct me to an expert or consultant in this field of expertise ? We are interested in the development of chemical/pharmaceutical flow meters but need the know-how for the electronics. Thanks in advance; Joe
  7. joeswoes

    ANSI/FCI 70-2 Control Valve Leakage

    When describing allowable leakage, the standard refers to ".01% of rated valve capacity". Rated valve capacity is defined as "the quantity of test fluid that would pass through the valve at rated travel under the stated pressure conditions as defined by the appropriate equations and...
  8. joeswoes

    Intumescent composites

    Is anyone aware of composite molding compounds which are inherently intumescent, that is, in the presence of a fire form a protective char layer insulating the base material ?
  9. joeswoes

    Cv correction for pipe size

    I cannot find any reference for the effect that the inlet/outlet pipe diameter may influence the Cv of a throttling valve. We have a 4" butterfly valve bolted to 6" piping and are having control problems throttling the valves to maintain liquid level. We're thinking the Cv through the valve is...
  10. joeswoes

    WOG valves

    What constitutes a "WOG" valve ? I know it stands for water, oil, gas, but are there specific designs/materials/perfornance that are defined or assumed when making this description ? Thanks in advance.
  11. joeswoes

    7N HCl

    Can anyone tell me the equivalent (%) HCl ? What is the mpy corrosion rate of 316 s.s. in this environment ? Thanks in advance.
  12. joeswoes

    7N HCl

    Could someone give me the equivalent (%) HCl. I am wondering if 316 stainless steel will have minimal corrosion rates at this concentration. Thanks in advance.
  13. joeswoes

    Valve design for shell integrity

    The specifications (ANSI B16.5, MSS SP72) I've seen pertaining to housing/flange shell integrity require a 50% safety factor over the cold temperature rated working pressure. Is this to mean that, in a pressure surge of more than 50% over max. working pressure, one can expect catastrophic...
  14. joeswoes

    ANSI B16.10

    Can anyone tell me the +/- tolerance on face-face for quarter turn valves per B16.10 ?
  15. joeswoes

    Sanitary pipe and tubing

    Does anyone know the dimensions of either s.s. sanitary pipe or sanitary tubing ? Are the ID's the same, but different wall thicknesses ? Is sanitary pipe the same as steel pipe, based on schedule (10,20,40,..) ? When would one use one over the other ? What is the most popular type of sanitary...
  16. joeswoes

    Avesta 254SMO

    Can this alloy be investment cast without a license required by Avesta. If a license is required, is there an equivalent ?
  17. joeswoes

    Rusted stainless steel castings

    I have 304 stainless steel castings that are developing rust. They have already been pickled (how and in what, I don't know). Can anyone guide me to the corrective action ? I've heard of passivating, sandblasting, electropolishing, and at this point, I don't have a clue as to the most...
  18. joeswoes

    Composite valves

    We have introduced a fiberglass composite butterfly valve for the CPI. It is designed to API 609, ANSI B16.5 and MSS SP67 specifications. What regulations or testing must conform to, or pass, to be used in off-shore piping systems?
  19. joeswoes

    x-linked PE

    I would like to extrude tubing from this material. Does anyone know where information is regarding material suppliers, processing guidelines, grade options ???
  20. joeswoes

    Optimmum thread design for tensile

    Please help... I assume that increasing the stress area of a thread increases its tensile force load capacity, so a UNF can withstand more tensile force than a UNC, but are other thread types better yet, such as acme or buttress ??? Thanks in advance to anyone who can help. Joe

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