Valve type

Hi,

What is the effect of different valve type (e.g. GATE-B vs GLOBE-B vs SCHECK-B vs TCHECK-B) in terms of displacement and stress analysis? What are the difference in the way that the calculation is performed?

Also, I'm using a butt-welded ball valve (designed for subsea purpose) in my analysis but it's not available for selection (the only ball valve is the BALLSE-F). Shall I just specify it as NS?

I'm using AutoPipe version 09.04.01.05.

Thanks in advance for the clarification.

Regards,

Morgan.