I believe its a common topic and there are few threads addressing this.
I have a scenario where we need to have 1.5" tapping on a 3" blind flange. As per Table 6, ASME B16.5, we can go up to 1.25". My question :
1. What does 'smallest Size of reducing outlet requiring hub flanges' mean? Why...
The header pipe is A671 CB60 material; we need to weld reinforcement pad to this, however, due to non availability of CB60 material, contractor is proposing CB70 material. I dont see much issue as both CB60 and CB70 have the same P nos; however, not sure whether to indicate any specific thing...
Is there any guideline of specifying the design pressure of piping which is vented to atmosphere. I understand that it will be 150# rating; however, there is an argument that it should be specified as 345 Kpag as per ASME B31.3. I couldnt find any relevant clause for this. Any help will be...
Thanks for all the infos. I came across the latest edition few days back and also noticed the changes. Am I correct in interpreting :
a. PWHT is exempted for P-1 materials for thickness up to 25mm?
b. For Pipe to pipe branch connections with R'Pad, the computed thickness as per clause 331.1.3...
We need to inlcude a drain connection in a concentric reducer due to inadeqaute space. At the site, i have seen a lot of fittings on the reducer for vent/drain connection. Would like to know, what fittings are exactly used in this case. Believe the connection wont be perpendicular due to reducer...
