Feb 24, 2020 #2 MortenA Petroleum Aug 20, 2001 2,996 whwn its practical (or the valve is mounted on a vertical pipe)? Upvote 0 Downvote
Feb 25, 2020 #3 shvet Petroleum Aug 14, 2015 691 1/ When it is a code/practice requirements, e.g. para. 8.3.2.c API 520-2-2015. 2/ For critical valves which has internals which can detach, fall down and block port, e.g gate/globe valves. This application is very situational. Upvote 0 Downvote
1/ When it is a code/practice requirements, e.g. para. 8.3.2.c API 520-2-2015. 2/ For critical valves which has internals which can detach, fall down and block port, e.g gate/globe valves. This application is very situational.
