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  1. 7016

    Flange thickness

    Hi, I want to make a drawing for pipe flange (slip-on type). Details as follows: Size: DN3000 Pressure: PN16 Bar Material: Mild steel Flow medium: Water Doubt: What thickness I need to give for this flange? Since this is a very big size, most of the standards have not mentioned about the...
  2. 7016

    pipe flange thickness calculation

    Hi, I want to make a drawing for pipe flange (slip-on type). Details as follows: Size: DN3000 Pressure: PN16 Bar Material: Mild steel Doubt: What thickness I need to give for this flange? Since this is a very big size, most of the standards have not mentioned about the thickness value...
  3. 7016

    bolts or studs for DN3000 Butterfly valve mounting

    Hi All, I need to provide fasteners for DN3000 Butterfly valve to pipe flange connection. Doubt: For such big Valves, is it a good practice to provide Hexagonal Bolts or Studs? Please suggest. FYI: Thread size is M64.
  4. 7016

    Why Rubber Gasket inside diameter is more than flange bore?

    Hi, I have gone through the various gasket standards EN 1514-1, ASME-B-16.20, ASME-B-16.21. And observed that inside diameter of gasket is more than the bore of the flange. Please find the attachment for easy understanding. I don't understand why the inside diameter of gasket is more than the...
  5. 7016

    flange bolt tightening torque

    Hi BCD, Thanks for your reply. I can see that all gasket manufacturers specified bolt torque only till DN1000. But I want for higher sizes like DN2200, 2600,3000. Pls suggest how to proceed.
  6. 7016

    Gasket for bigger size - dovetail joint

    Anybody... Pls suggest with your experiences for my above post.
  7. 7016

    pipe flange thickness

    Hi Andrew, Thanks for your post. Yes. The valve is flanged. But it is ductile iron material(min. Yield strength is 320 Mpa). Where as my pipe Flange is mild steel ( Yield strength is 250mpa). Because of lower yield strength of pipe Flange, I think it is not recommended to maintain same as...
  8. 7016

    pipe flange thickness

    Hello LittleInch, I'm going to maintain pipe flange drilling as per the valve flange drilling. My concern is only about thickness. 5.5" is more or is it okay?
  9. 7016

    Gasket for bigger size - dovetail joint

    Hi, Is it okay to buy Dovetail joint gaskets for bigger sizes like 3000mm diameter? Will there be any issues in-terms of leakage at the joints? Pleas suggest with your experiences. Material: Rubber (EPDM)
  10. 7016

    pipe flange thickness

    Hi, I want to make a drawing for pipe flange. Details as follows: Size: DN2600 Pressure: PN16 Bar (FOS included) Material: Mild steel Doubt: What thickness I need to give for this flange? Since this is a very big size, most of the standards have not mentioned about the thickness value. But...
  11. 7016

    flange bolt tightening torque

    Hi All, I want to tighten the bolts connection between pipe flange and butterfly valve flange. Details as follows: Valve size : DN2200 BOLTS: M56 X 52 Nos. - A2 hexagonal bolts 8mm thick rubber gasket is used in between valve and pipe flanges. Can any one tell me how much torque need to be...
  12. 7016

    Diaphragm control valve face to face length

    further to my above doubt, please find the attachment of the valve picture for easy understanding.https://files.engineering.com/getfile.aspx?folder=127ecd57-4257-4f50-807d-27bbeee85042&file=DCV.jpg
  13. 7016

    Diaphragm control valve face to face length

    Hi All, Can anyone tell why does a Diaphragm control valve doesn't follow any standard for face to face dimension (i.e., body length)?
  14. 7016

    BSPP or BSPT threading for brass end fittings of control valve

    Hi TugboatEng, To my knowledge, "BSPP to BSPP" fitting will have chance of leakage more as compared to "BSPT (Male) - BSPP (Female)" fitting. Please correct me if I'm wrong.
  15. 7016

    BSPP or BSPT threading for brass end fittings of control valve

    Hi All, I'm want to select BSP threading brass fittings for our control valve tubings. I have two options: 1. All male & female threading in BSPP. 2. All male in BSPT and all female threading in BSPP. can anyone suggest which is the best option to select. FYI: Application is for water...
  16. 7016

    pipe manufacturing tolerances

    Hi All, 1. what is the tolerance of standard pipes? 2. I want to know the tolerance of 2600 (104") pipe. I didn't find any information about these tolerances in web. Please help with your knowledge and experiences.
  17. 7016

    Gasket type

    Hi Nick_grey, Yes. It is not recommended to use any sealant/glue. Especially for water applications. But to avoid the floppy of gasket/to make sure the gasket stands flat during installation, I think full face gasket is good to go for such big valves. May I know which standard you follow for...
  18. 7016

    Gasket type

    Hi Nick_gray, Yes. I will request Gasket supplier to suggest the thickness. Because no gasket standard is saying about thickness.
  19. 7016

    Gasket type

    Hi Btrueblood, Thanks for the support. I agree to your point. Full face gasket makes the installation easier, especially for such a big valves.
  20. 7016

    Gasket type

    Hello All, Question: which type of gasket is ideal to use for easy installation of DN2600 butterfly valve? Ring type or Full face flange Gasket? Details: DN2600 PN16 butterfly valve has raised face flanges. I want to select EPDM gasket for valve installation to pipe Flange. Is it good to...

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