Hi,
I have come across the " Disc strength" test requirements for triple offset valves. This is listed in both BS5155 and ISO 12266-1. The problem is that the test calls for testing of valve at 1.5 times the rated pressure. Seals of TOV's are not designed for this. The standard says that some...
I have been asked to work on some trunnion valve requirements by my company. All our valves are with internal trunnions i.e. the trunnions are machined out of the ball casting/forging. In case of external trunnion this is not done and are relatively cheaper.
Can some one help on how the choice...
