So would I take the equation from PG-52.2.1 -> E=(p-d)/p in order to calculate the longitudinal efficiency (two 2F holes) ? => E=(p-d)/p=(101-77)/101=0.238 ?
and then equation of PG-52.3 2*(pc-d)/pc in order to calculate the equivalent longitudinal efficiency of the circumferential ligament...
I have read it and I have calculated ligament efficiency for all groups with different definite patterns except the area which I have marked up. How would you calculate it?
I have thought about it, but how would you calculate it?
Hello everybody,
I am trying to calculate the ligament efficiency of a steam drum of a d-type watertube boiler.
However I am not sure how to calculate the ligament efficiency in the below marked-up area since the two of the 3" holes are closer to each other than the rest 3" holes.
d=77mm...
Actually I pasted the wrong link. The correct link is this.
On this technical datasheet they mention ASME B16.10 for Face-to-Face/End-to-End even though I cannot find any 8" 300# globe or check valve that has a length of 660mm in ASME B16.10.
Which screw do you mean?
At least I think I have...
Thank you both for your answers.
It must be a stop check valve. After googling "stop check valve" and "crane", I found this and it gives a length of 660mm for an 8" 300# valve just as the installed valve.
But why doesn't the length actually conform to ASME B16.10? Are the dimensions of a stop...
Hello,
I have this valve which is located on the steam outlet of an old Steam Generator. It looks to me like a Y-type Globe valve (On the P&ID the type of valve is not specified but by older operators it was always called "needle valve). The piping dimension is 8" while the flange rating is...
