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Recent content by navycaptain

  1. navycaptain

    are there any problem in the PSV design

    Hi Obturator,you are impressive! Youth is not a time of life, it's a state of mind.
  2. navycaptain

    are there any problem in the PSV design

    Hi Gray, besides the stress concern, for PSV outlet pipe conncetion, if the flange directly weld with elbow, then the pressure drop is higher than the one with a piece pup of spool, is it good for the system? and another point, not for PSV, let's say an elbow directly weld with elbow with...
  3. navycaptain

    are there any problem in the PSV design

    Hi DGRayPPD, thank you for your reply. My concern is there could be a "welding stress" at the connection of elbow and flange, the stress could not be evenly distributed during welding, and this could possible cause corrosion after many years, and it's not good for mechanical integrity. it...
  4. navycaptain

    are there any problem in the PSV design

    Hi George, thank you for your reply, I'm not meaning the block valve, I want to say the PSV flange welded directly with elbow, I'd prefer to first weld with a short spool, and then connect with pipe. Youth is not a time of life, it's a state of mind.
  5. navycaptain

    are there any problem in the PSV design

    Hi DGRayPPD, thank you for your comments, I made a wrong explanation above, what I mean is the PSV outlet flange directly welded with elbow, which I believe it should first welded with a spool and then with an elbow Youth is not a time of life, it's a state of mind.
  6. navycaptain

    are there any problem in the PSV design

    thank you georgeverghese, so you mean it should be connected with a straight spool at the discharge of PSV, right? Youth is not a time of life, it's a state of mind.
  7. navycaptain

    are there any problem in the PSV design

    Thank you Latexman, yes, the inlet valve size is smaller than the PSV valve size which could cause high pressure drop. Is it also a problem that the elbow directely connected with a straigh pipe? is it allowable? thank you! Youth is not a time of life, it's a state of mind.
  8. navycaptain

    are there any problem in the PSV design

    Hi, LittleInch, thank you for your comments. it's true that we normally take away the PSV when we'd like to have a test. it's normaly done offline test. Youth is not a time of life, it's a state of mind.
  9. navycaptain

    are there any problem in the PSV design

    Hi, Sen, thank you for your comments, it's helpful. Youth is not a time of life, it's a state of mind.
  10. navycaptain

    are there any problem in the PSV design

    Dear engineers: Attached is an installed pressure safety valve? are there any problem in the design? In my view, the discharge pipe is directly connected with elbow, is it necessary to conncet a spool and then connect with the pipe? what do you think of it? thank you! Youth is not a time of...
  11. navycaptain

    drill a square rectangular hole(850mm*300mm) on a blast resistant wall of instrument cabinet room

    Dear engineers: I received an engineering deviation recently, it's planning to drill a hole on the balst resistant wall of instrument cabinet room because the design institution forgot to design instrument rack and cable trays. My question is: is this kind of hole can influence the...
  12. navycaptain

    upstream and downstream pipe length of rotameter flow meter

    Dear Bimr, thank you for your professional reply. Youth is not a time of life, it's a state of mind.
  13. navycaptain

    upstream and downstream pipe length of rotameter flow meter

    Hi danw2, thank you for your clear pictures, they help a lot! Youth is not a time of life, it's a state of mind.
  14. navycaptain

    upstream and downstream pipe length of rotameter flow meter

    Hi EdStainless, thank you for your professional comments Youth is not a time of life, it's a state of mind.
  15. navycaptain

    upstream and downstream pipe length of rotameter flow meter

    Hi Compositepro, thank you for your professional explanation, I'm clear on this. thank you! Youth is not a time of life, it's a state of mind.
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