Men8th, here is the link to a technical bulleting covering the seat;
http://valveproducts.metso.com/documents/neles/TechnicalBulletins/en/1D21EN.pdf
( page 5, seat C )
" The bellows acts as a spring and seal, and also
increases the seat pressure at higher pressure differentials. "
A normal...
This is a ball valve seat. The grooves have at least two purposes;
1. The seat acts as a spring, when the 2- piece valve body is tightened, both ( there should be another seat on the other body half ) seats are somewhat compressed, the other end against the valve body, the other end at the...
I am a valve technician, my job is to assemble, and inspect valves.
Most of the valves in the company I work for are quarter turn eg. Ball, V-Ball, butterfly, and a few other ones.
For a while now I've been struggling to understand why the requirements often are somewhat odd.
For example when...
