Can you give me the Flange size,rating,gasket thk, wafer component thk, manufactures std bolt length and your client Std bolt length.
I will check it one by one.
I checked your client STD Bolt length. The Flange to Flange joint bolt length is 5 to 10 mm more than the PipePro Data STD bolt length. But the Wafer combination flange bolt length is exactly matching with PipePro Data STD bolt length + wafer component thk. So the problem is not on your Client wafer combination flange Bolt length, but it is in Flange to Flange joint. There is no Short bolt length problem in your Client Spec.
So you have to keep number of flanges for each type of Flange Joints to achieve your Client Spec Bolt lenth. (At least you can ask your client about why there is a need of 5 to 10 mm extra long bolt for Flg to Flg joint)
i had tried to compromise the client many times, but they cannot be compromised ...... :) they want their standard bolt lengths to be used. i had started to create new flanges....
Unfortunately we are back where we started and you will need to use the method I described in my first answer. Create a special flange for use with wafer valves.
Told you that you could not rely on PipeDAta PRO etc for accuracy.
i had tried to compromise the client many times, but they cannot be compromised ...... :) they want their standard bolt lengths to be used. i had started to create new flanges....
Just like Pitch said, you hard code a client specific flange(s)/bolt(s), leave your ANSI/ASME checked catalog alone.
We had to do this on various projects. Our approach is to make a corporate catalog, checked per published technical standards, and copy the same item to a project specific location to be used just for that project if there are deviations. The next new project will be pointing to corporate catalog and not the project specific ones.
Your client may have a good reason for the different bolt length, and he does not have to change it to match PDMS's catalog. As long as you have explained that PDMS's catalog is based upon ASME published standard - in the whole scheme of a project, this is really nothing.
