What is the structure of this butterfly valve data sheet?
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May I ask if this butterfly valve data sheet refers to the wafer-type version? Should the structural length per API 609 be based on the 300-pound class column in the drawings? Also, in the data sheet, the valve core material is specified as NBR+304SS – does this refer to the material of the butterfly plate or that of the sealing ring? Could you please give me some advice, sir?
Don’t call me boss; I’m just a regular employee too :) Regarding your question, all I know is the following: WAFER/DO-Offset/G.O Butterfly valves: wafer-type/double-eccentric/gear-driven. Valve core: NBR+304SS. NBR = nitrile rubber
The expert will teach me, =============== Come up with your questions on your own
The first issue is that some manufacturers do not produce them according to that length, as shown in the figure
The third floor explained it very clearly; there are no problems. As for the length mentioned on the 6th floor, it is recommended to confirm it with the manufacturer in advance; however, it should be the same as the figure you provided. Since you explicitly requested that the valve length comply with API STD 609, the dimensions in Table 3 of section 4.5.1 of this standard are identical to the structural length shown in the image you provided.
It’s also a solution; the attached diagram is undisputed
Is there any reason why the manufacturer doesn’t produce products according to the standard dimensions? ? ?