Valve Construction

[shahidr]

Hi all,
I need the description (and detail as much as possible) for the following ball valve terms:
Long Pattern
Static Primary Seal
Static Secondary Seal
Dynamic Primary Seal
Dynamic Secondary Seal
Seat Insert

Also why for some valve, integral bonnet is specified? Is it only for small bore valves and to avoid leakage?

I hope I get the responses soon!!!!!!

Shahidr

[rsmyegpet]

Dear members,
I am looking for GASKET HANDBOOK by Daniel E. Czernik
Can anyone upload this handbook please.
Thanks and Regards,