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  1. Spike2000

    tig welding tubing, fitting face perpendicular to tubing

    semi auto welding, one shot less than <.005" out....yikes thank you
  2. Spike2000

    tig welding tubing, fitting face perpendicular to tubing

    Thank you for the response, 2-3 pcs for prototype then production run quantities...100's of pcs
  3. Spike2000

    tig welding tubing, fitting face perpendicular to tubing

    looking for some existing fixturing or ideas on how to hold a very tight tolerance on butt welding a 4" fitting to 4" o.d. tubing with a perpendicular tolerance of .015" we are tig welding and our current tolerance is .032" on this dimension, thank you in advance
  4. Spike2000

    Certification of Tack Welds ASME-BPE, B31.3

    Folks for ASME-BPE Certification it is required for tack welds to be certified, similar to full GTAW welds. the welders are to be certified Section IX as full welds are. not an issue, however does any one know how to qualify the welds? you obviously cannot bend test thank you
  5. Spike2000

    stress analysis on bracket

    thank you everyone for your responses this will help get me going, i cannot show you the complete assembly as the assembly has a pattent FEA Way - yes plastic deformation is the goal here, thank you for the info. i am struggling with "Elmer" software, but if there is another FEA software anyone...
  6. Spike2000

    stress analysis on bracket

    Forum Folks see attached...i have a bracket w/1500 psi of pressure hitting the point shown it is held in place with the static pin also as shown we need this bracket to deform slightly yet not "bend" out of shape. the bracket is .730" thick...everything is in inches as of right now this thing...
  7. Spike2000

    ASME B31.3 vs. sanitary tubing

    danw2, thank you for the reply and link to this article I had no idea this article was out there, have met 2 of the authors at the BPE meetings thanx again.......!!
  8. Spike2000

    ASME B31.3 vs. sanitary tubing

    hey folks we currently have a job that must meet B31.3 spec/code.. piping no issues, straight forward what about sanitary tubing and fittings? which most sizes have a .065" wall and are for the dairy, sanitary, beverage and pharma, industries. tubing is talked about, but is tubing covered under...
  9. Spike2000

    GPM VS PSI

    feed pressure = 50-60 psig......tada.... thanx
  10. Spike2000

    GPM VS PSI

    Thank all of you for your responses the pump guys/designers came thru with an answer....
  11. Spike2000

    GPM VS PSI

    Ya I know BronYrAur I am 3rd or 7th down the line away from the designers on this. we are not the pump people on this one. all I want to see is the PSI to make sure our connections can hold up to the requirements. All I know is 3.834 i.d. X .083 wall tubing, with clamp connections customer is...
  12. Spike2000

    GPM VS PSI

    All I have the following: 3.834 tube i.d., with 280 gpm (assuming water). I need to know the psi running thru this system, nothing seems cut and dried, pressure drop is miniscule things are off the charts in Crane's any direction would be nice... as always thank you
  13. Spike2000

    Propylene Glycol and Failing Sanitary Ball Valves

    Thanx Edstainless not a plastics expert here, not sure how the Teflon seats are constructed but I do have new info. the failing valves are exposed to a cycling of the temperature from 40 degrees f to 265 degrees f in the same process line same valves with a consistent temp are not failing...
  14. Spike2000

    Propylene Glycol and Failing Sanitary Ball Valves

    thank you for the responses ok a little more details, it seems like the Teflon is deforming and cannot close looks like it is getting forced out (think squeezing playdoh)just not that extreme as the pressure/temperature is within spec, I am thinking a chemical reaction, I don't know what else is...
  15. Spike2000

    Propylene Glycol and Failing Sanitary Ball Valves

    Guys I have a sanitary ball valve where the Teflon seats are failing. product is propylene glycol running at 250 f and 100 psi other products run at these temps and pressure with no issues we are new to propylene glycol, but what I can find Teflon should be fine with this chemical are there any...
  16. Spike2000

    asme sa vs astm

    Thanx Bimr should have stated, been there done that asme.org doesn't find the spec ASME SA...when I do a search
  17. Spike2000

    asme sa vs astm

    Folks I have been tasked to find the latest publication of multiple ASTM and ASME specs. for example: ASTM not a problem easy to find ASTM A182 - 2016a...as the latest what about ASME SA182? I know ASME will say ASTM A182 is fine for ASME SA182...however I cannot find what the most current...
  18. Spike2000

    Perlick Threads

    been there done that.
  19. Spike2000

    Perlick Threads

    Running into people asking for fittings with male/female perlick threads can anyone point me to some detailed information on this thread?? i believe its a UNC type thread but can't say for sure thank you

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