thread408-157477
Referring to the thread attached;
When it comes to designing the valve by ourselves:
1. Do we calculate the torque, as in we design the torque for the valve?
2. If we measure the torque, that means we did not take into account the torque value when designing earlier?
3. A...
Greetings!
Referring to API 6D, para. 9.3: "the test pressure shall be 1.5 or more times the pressure rating determined in accordance with 5.2 for material at 100 deg F (38 deg C)"; if I am to run a pressure test on a 2" 150 Ball Valve, A105 material with 150 deg C pressure rating, which gives...
Greetings,
Can anyone kindly explain to me what are the differences between seat, seat insert and seat ring? Valves figures in API 6D show only seat ring and I got confused when I saw valve drawings with seat and seat insert.
Hi everyone!
Can somebody explain to me how to calculate the breakaway torque for ball valve particularly for 2 inch - class 150 ball valves. The material for seat is PTFE and the ball is made up of ASTM A105. Thanks!
I just started working as a graduated engineer. Never heard of total membrane stress intensity during my studies and yet have to solve the total membrane stress intensity. Anyone can teach me about membrane stress intensity and how do I calculated for the total? [sad]
