Hello Daniel,
When you connect and need something that's not in the spec, a placeholder is sometimes added. When an adapter (the flange) is required, it's not as clear what is needed. So without placing the flange manually, a part missing from the spec would instead mean the compound joint (autoflange) does not get created.
I'd suggest first making sure you have all the fasteners in the spec in addition to the Lap Joint Flange. I tried adding at Flange LJ FF, Bolt Set FF Lug, Gasket FF, Stub-End LJ, and a Valve FF to CS300. I could then get Lap Joints to Autoflange (attached image).
If you have weldneck flanges being created instead and do not want them, you can remove that WN size from the spec.
If you need both LJ and WN for the same size you can place manually as you ar doing or use the substitute grip. You can also modify connection properties, but hopefully you can get the behavior you want just from changes to the spec.
...Added Stub-End LJ. This is considered a fastener.
Edited by: RSFAdsk on Apr 16, 2010 6:23 PM
Richard Frank
Autodesk Knowledge Network
Autodesk, Inc.