Forged/Casted Trunnion Mounted Ball Valve

[mmbguide]

hello everybody

I am looking for design parameters for Forged and casted trunnion mounted ball valve:
[ol 1]
[li]define thickness for both in same class?[/li]
[li]Need ball bearing or not?[/li]
[li]etc,,,[/li]
[/ol]

totally i need to know what is the differences between them?

thank you everybody

 

[mmbguide]

if it is possible, help for spring calculation for sealing. thank you.