12 Bolt on each face of the flange for the butterfly valve

Make sure butterfly P1 and P2 connections are NOT starting with W

Bolt type of valve should be set to CAP

Bolt thickness of valve should be set to the bolt hole (i.e. 28)

Bolt spect should contain SPCO with BTYPE set to CAP (as well as BOLT and WASH)

Thanks for the response. However it is not working

Could you please post some image? I.e. Command Window when generating the iso?

Bolt calculation is not an easy matter....more info are needed.....

Message when extracting iso. There's no error.

Valve in iso

MTO in iso.I should be getting 24 screw 90mm and 12 pair of washer only

Valve in CATA

Bolt set of valve

SPEC of BOLT

Does the flange on both side of the valve refer to the same Bolt SPCO (the B3 in your iso)? I would like to see the BITEMS of both of these SBOL

I confirm the flange refer to the same Bolt Set as the valve

can you check you BSEL? since it looks like (to me) that one of valve is referring to Bolt Spec with SBOL /CIV-TUY-EKM.BLT/TAB-PN16/MOUNTING-SCREW-A/M20 and the other with the SBOL /CIV-TUY-EKM.BLT/TAB-PN16/MOUNTING-SCREW-A/M20-1 since I can only see 3 Sets of additional items (WASH-WASH-NUT)

I set the BSEL to B but no change in the MTO of the iso

can you try to use the query below on BOTH FLANGES connected to Valve?

Q P1 BOLT1 SPREF
Q P1 BOLT2 SPREF
Q P1 BOLT3SPREF

Both are pointing to the wrong BOLT SPREF!

Is there a way to change it?

As mentioned I need 24 screw 90mm and 12 pair of washer only.