Please refer to paragraph 6.7 in ASME B16.34 for wafer or flangeless valves. Your monoflange valve appears to be this type of valve and if it complies with the requirements of paragraph 6.7, then it is within the scope of B16.34.
Paragraph 6.7 shows that a flangeless valve shall conform to the applicable requirements for flanged valves and the requirements of Paragraph 6.7.
I don't see a specific paragraph about flanged valves, only paragraph 6.2.2 Flanged Ends. The requirements in 6.2.2 contain only information about the flange and not about the valve itself.
My questions:
1. Must a flangeless valve meet the requirements of paragraph 6.2.2 Flanged Ends? or
2. Did they mean with “requirements for flanged valves” the general requirements throughout the standard?
You have the right paragraph for flanged valves. It is 6.2.2. It says, "Flanged ends shall be prepared with flange facing, nut-bearing surfaces, outside diameter, thickness, and drilling in accordance with ASME B16.5..."
Flange facing is applicable
nut-bearing surface is not applicable
outside diameter is not applicable
thickness is not applicable
drilling is applicable, but also meets the additional notes in paragraph 6.7.