42 inches ring
42 inches ring
(OP)
I am working on a piping installation project,we have a 42 inches class 900 ,RTJ flange provided from stock material with no ring,we searched for related ring from other resources and found different ones with same descriptions but non of them does not match within ring seat,At first how could it be possible the rings are not match with flanges with proper descriptions and now Are we allowed to shave or machine ring seat on flange face or machining ring individually?
(42 inches flangee sre in serie A type)
(42 inches flangee sre in serie A type)





RE: 42 inches ring
RE: 42 inches ring
RE: 42 inches ring
RE: 42 inches ring
As you said I cheched out the point in ASME B16.47 and found out after 36inches there is no dimension for seat ,up to 36 inches RTJ flange we have all dimensions for seat geometry then proper Standard recommendations are not applicable in this case,I think after 36 these dimensions are all in manufactures hand,if you get else from standard please let me know
RE: 42 inches ring
Indeed you are correct.
Both B16.47 and MSS-SP-44 both state that ring type joints beyond class 900 36 inch "are not contemplated".
At this sort of size and pressure you can't go round "shaving" or modifying the flange.
I suggest you regard your current flange as scrap metal and go and order a pair of flanges and rings designed as one complete unit.
Why not ask a gasket manufacturer like Klinger what they would do?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: 42 inches ring
RE: 42 inches ring
RE: 42 inches ring
Otherwise delete the flanges and weld it.
Messing about with a 42" class 900 flange is not a recommended option IMHO.
whatever you do, sit down and think it through and document why you're doing it.
doing things in a big rush to finish on time is often the root cause of failure.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: 42 inches ring
http://www.mpac-asia.com/webarch/media/resource/04...
RE: 42 inches ring