Hi everyone.
I have always seen Top Entry ball valves with PUP x Flanged (RF / RJ) ends being tested with a temporary cap welded to the PUP and a blind flange on the flange. After testing, the end of the PUP with the temporary CAP was cut off and the end beveled.
Analyzing specifically the...
Hello jassco,
I agree with what you say. Also for us each component is uniquely defined by its drawing, so from what we have said, a single master drawing could not be applied to the drawings.
Thank you
Hi everyone.
I work on design of valves for oil&gas and currently on our drawings we only indicate the general tolerances with the indication "ISO 2768-mK". We don’t indicate any specific geometric tolerances on individual dimensions/geometries.
After carrying out a functional analysis on our...
SPDL,
Thank you for the answer!
I confirm that the dowels are used to prevent rotation of the bonnet/upper flange due to the action of the operator (gear or actuator). Following your reasoning, the dowels are part of the drive train, so they must be checked with the design torque as for the...
Hi everyone.
We are designing a ball valve in according to API6D 24th edition.
As regards the calculation notes relating to the drive train, in accordance with par. 5.20 of API6D, I would need to clarify how to check the dowels between the body/bonnet and bonnet/operator plate, in particular...
