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Hello, I'm checking the Standard 12516-1 and I found two sentences that seem to be inconsistent. They era both in the Introduction of the standard: - "The internal diameter of the inlet bore of the valve, gives the reference dimension from which the tabulated wall thickness of the body are...

Can someone help me to point out some doubts I have about grease fittings for valve? 1- where does the designations "Button Head" and "Giant Button Head" are from? The only standard stating "Button Head" that I found is DIN 3404. 2- is it correct to consider "Button Head" for 5/8" (16mm)...

Hi NDS_21, I'm not sure of fully understanding your doubt. Anyway consider as follow: tipically on side entry ball valves (this was the subject of my thread, now I see that it is not stated) the central core part cannot be disassembled from the line without disassembling the whole valve. Face...

Thank you very much

So this mean that choosing between the two methods is up to the designer? Thank you bcd for your answer.

Hi all, I'm checking last rvision of B16.34 and I'm a little bit confused about Multipiece valve wall thickness. In Paragraph 6.1.2 - c) it is stated: “(c) For multipiece valve construction, where the body consists of a central core to which are affixed two end pieces, the inside diameter, d...