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  1. ghillis

    CRN

    May I ask what material you are working with? B16.34 is not the only code of construction that may be appropriate.
  2. ghillis

    Need for a 1150 CCA Battery with a Small Package Size

    I don't know if this is anywhere close to your desired package size: Interstate Model 8D-MHD 1400 CCA 20-3/4 x 11 x 9-5/8
  3. ghillis

    Difference between galvanising and phosphating?

    Galvanizing is what you see on a metal bucket, you can see the zinc crystals, and the surface is not suitable for wear. Zinc acts as a sacrificial anode, protecting the base metal. It is possible to get much nicer finishes with proper processing, many panels in cars are galvanized...
  4. ghillis

    Need for a 1150 CCA Battery with a Small Package Size

    I assume you are looking for a mobile application since you're spec'ing CCA. I've always seen two batteries used for that kind of rating, even in the big diesels. The weight gets pretty unwieldy at 70+ pounds, plus people hate to spend the big bucks to replace a special battery that isn't...
  5. ghillis

    ASTM Vs SAE Fasteners

    An air system is not power piping, yes it may have a lot of potential for release of energy, but it is not covered. I believe that small piping is exempt from the requirements of B31.1.
  6. ghillis

    DIN standard information

    Its a free cutting carbon steel, nominally AISI 1045 but leaded. I don't have exact composition, but... DIN - Norm 17210-84 --- 1.0504 K + N = Drawn and Normalized Hope this helps.
  7. ghillis

    Chloride ion detection.

    In an autoclave I assume you would deal with seals, insulation and/or coatings. Try: ASTM F1277-95 Standard Test Method for Determination of Leachable Chloride in Packing and Gasketing Materials by Ion-Selective Electrode Technique ASTM D512 Test Methods for Chloride Ion in Water ASTM...
  8. ghillis

    Looking for Solenoid Valve

    What kind of pressure and flow, what kind of flow pattern(two way, three way four way)? There's a lot of manufacturer's out there who only make valves for a small range of applications. I believe that with a bistable design, you will not find a AGA, CGA or equivalent certification. The reason...
  9. ghillis

    book for valve design

    I suggest "Lyons' Valve Designer's Handbook". You should be able to find a synopsis at Amazon.com or any on-line book seller.
  10. ghillis

    Water Hammer

    Many of the best references are out of print. I would suggest Lyon's Valve Designer's Handbook, which is very readable and deals with many of the practical, rather than theoretical aspects of the subject. The section on the subject is rather small, but there is a lot of other good information...
  11. ghillis

    Shear strength of NPT threads

    JohnP is probably pretty conservative, since pressure limits are based on hoop stress in the pipe. Assuming male and female joints are same material the answer would be based on the shear area equal to half the engagement length times the mean circumference (at pitch diameter)of the threads...
  12. ghillis

    screw

    All UN, UNS, UNEF, etc are all 60 degree. UNS means that the thread dimensions are calculated according to ANSI/ASME B1.1 Section 5 and 8, but the designer is supposed to call out the Major Diameter, Pitch Diameter and Minor Diameter since the engagement is a factor in the answer since as the...
  13. ghillis

    Nubbin

    Could you provide a paragraph reference? I looked in the '89 Code and couldn't find it.
  14. ghillis

    Torque for NPT connections

    NPT Tapered threads seal (in theory) by interference. Since there are several variables that enter into determining coefficient of friction (material, pipe dope, Teflon tape) and by extension torque, it is not practical to use torque. If you used torque one of the following would occur...
  15. ghillis

    CV

    It is not likely in a real-world system. It depends on the pressure supply and drop in the piping. If there is no drop in the piping and the supply head is constant, then yes. Since as you open the valve the flow goes up, the effect of the pressure drop in the piping becomes more significant...
  16. ghillis

    Orifice Equations

    If the orifice is partially submerged, then how much pressure drop through it do you anticipate? Obviously it cannot be more than a few (tenths of) inches of water, since more than that would change the submergence level.
  17. ghillis

    Where to find info

    Try Industrial Fasteners Institute 1717 East Ninth Street, Suite 1105 Cleveland, OH 44114-2879 (216)241-1482 They have most kinds of nails as well as threaded fasteners.
  18. ghillis

    INSTALLING VALVES

    It does depend on the type of valve and actuator. If you tell me what kind I can get specific. Balls and butterflies are not generally a problem, except sometimes the actuators, which can be a problem on any type of valve. Gate and globe valves will tend to have crud built up in guides and in...
  19. ghillis

    flow of liquids through tubing

    Your (desired) flow rate cannot be reached using the tubing size you have selected. Try inputing the inlet and outlet pressures and see what the flow rate is.
  20. ghillis

    ASTM A-563 Grade DH nuts

    Sorry, The company I meant changed its name a while back, it is now Accutech (702)739-1966.&nbsp;&nbsp;They deal with the Nuclear industry, so they are, presumably, very reputable but may be a bit higher than others.<br><br>

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