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Hi SnTMan, Thank you for your elaboration on this problem. I believe we have got this topic sorted out. Cheers!

Thank you for your quick respond. I was considering TEMA rules to apply in ASME VIII design but wasn't sure if this will be still in compliance with the code or part UHX should be followed only. If the flange is considerated to meet TEMA requirements so the u-bend configuration can be used, what...

Hi everyone! Can anybody point me to the specific paragraph of ASME VIII DIV 1 when the calculations of the above flange can be made please? I would like to find out how a perforated flange with the number of holes located in the centre part of it and arranged in circular pattern can be...

Hi r6155, I was considering a standard swing bolt DIN 444 with an eye nut DIN582 metric size. Would this be code compliant (ASME VIII DIV 1?

Hi LittleInch, I am sorry, I can't provide a drawing, but you can imagine a simple vessel with a rolled ring type flange with a blind flange on the top of that. Manual calcualations in accordance with ASME VIII Div 2 show that 4 swing bolts are good enough to carry the pressure load, but I am a...

SnTMn, I agree with you. Is there any known to you formula to calculate the minimum bolt spacing against leakage? 4 swing bolts compared to 8 bolts of a regular 150# flange is increasing the bolt spacing twice.

Hi SnTMan, Thanks for your quick reply. I know this is not a mandatory if not required but I believe it is some sort of an idea how to figure out if a joint is going to be pressure tight, especially when only 4 swing bolts holding the flanges together whereas 10'' flange has got 8 bolt holes...

Hi, Sorry, I forgot to mention the shell size, it is 10'' and I use 4 off swing bolts in the design. I have calculated base on Appendix 2 formulas the force in each swing bolt to be roughly 2 KN. I am only wondering if in this type of design where a swing bolt coming with an eyenut is utilised...

Hello everyone, I would like to cross check with you code compliance of a set of swing bolt and an eye nut. I couldn't find in ASME VIII Div 1 any reference to eye nut (only wing nut is mentioned there) so I believe the code doesn't prohibit it from use. I am not sure if there are any...

Perfect! Thank you Mike and everyone on this forum for the help! I can consider this topic to be closed now, all sorted out.

Mike, I agree on you comments regarding 2-14. Good to keep in mind. The only issue is that people tend to get minimum what they need so if a ring flange can be lighter or smaller (in terms of t value) they will definitely go for that. Obviously, adding more steel and meeting 2-14 requirements...

Hi Mike, thank you for your comments, you have made these points clear now. Additionally, I have checked Section II for a pipe material and I think as long as I avoid selection of a pipe with G5 comment it should be good to go. The only question I have got in my head is the calculations o flange...

r6155, sorry mate but I don't get what you need. This is the drawing of the ring flange. You can now imagine for an example a blind flange with slotted holes goes on top of that and swing bolt brackets welded to the ring flange. It is simple as that.

Sorry for delay, I have just got this drawn. This is a photo of rolled of welded ring type flange. Alternatively, the dimension show there corresponds to 12'' SCH XXS which could be used as starting point for similar ring flange if for example I/D if this pipe is machined to suit. Some Curious...

Some Curious Guy, thank you for your comment again, much appreciate it. I will try to get the sketch posted here over the weekend once I get a free second but refereing to your comment I have got a few questions here and please correct me if I am wrong: a) flange minimum thickness in accordance...

Some Curious Guy, thank you for your reply on my second question. I have checked this paragraph so I believe the joint efficiency E for this weld is to be set in UG-34 accordingly in order to calculate thickness of the ring flange. I haven't seen any design where a piece of pipe is used as a...

SnTMan, yes I believe I am.

The reason for this is that I have found a 12'' pipe SCH XXS which with a little of machining on its I/D it will be perfect for my application. The design must comply with ASME VIII Div 1. Thank you for sending the link to interpretation. In this case, the flange ring is not a hubbed flange so...

Sorry for that. The code is ASME VIII Div 1. I read UG-14 yesterday and I believe that round bar is allowed to take function as flange ring and material grade suitability needs to be checked in Section II. I could find nothing about the flange rings machined from a pipe. I have attached sked of...

Hi Everyone, I am just wondering if a flange ring can be manufactured from a pipe or round bar and still comply with ASME VIII rules? If not, can a flange ring be rolled from flat plate or bar and then welded? What are the requirements for the weld?