This is the first time i've seen this error before, despite modelling many relief valves over the years and am hoping that missing the reason for the error is a lack of sleep (too hot in Manchester)
I've got a relief valve with 25mm PN40 and a 32mm PN16 end connections - New bolting
The SCOM BLRF attribute references two BTSETs /CAT-STUD-PN40-20M and /CAT-STUD-PN16-32M as appropriate.
The two connecting flanges also reference the two BTSETs as appropriate (that's one BTSET per flange, i'm not that tired:) )
yet i'm getting an error of 'Mismatch in BDIA attributes between members of BTSET /CAT-STUD-PN40-20M and BTSET /CAT-STUD-PN16-32M'
'Mismatch in BDIA attributes between members of BTSET /CAT-STUD-PN40-20M and BTSET /CAT-STUD-PN16-32M'
Also check blrf sequence, it should be pointing P1 first & then P2.
Inlet flange should be with same matching Bdia as for P1 blrf.
I have a relief valve with two ppoints named 1 & 2
each has a different size/rating and hence the blrfarray has two entries a & b and they relate to the connections as 1a & 2b
when the isodraft goes through the bolt calculation it looks at the flange connected to '1' with a blrfarray of 'a' from pos [1] of blrfarray, as this flange also has a blrfarray of 'a' the bolts are successfully calculated.
the next connection is '2' connected to a flange with a blrfarray of 'b'.
Isodraft looks at the valves blrfarray and in pos [1] it has blrfarray a and throws an error relating to a mismatch in either dia or quantities.
Isodraft then looks at pos[2] of the blrfarray and as this matches the connecting flange it calculates the bolt length.
So you are always going to get at least one bolt error on a multi-size/rating relief valve unless the bolt quantities and size match both ends.
and the fact that i'm getting a mismatch isn't necessarily a bad thing. I hope
