Regarding the wall thickness of butterfly valves
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I checked the standards: in GB 26640-2011, the specification for minimum wall thickness of valve housings only specifies the wall thickness for valves with an inner diameter of 1300; there are no requirements specified for valves with larger inner diameters. In the appendix of JB/T 8527, formulas for calculating wall thickness are provided. My problem is that the thickness calculated according to these formulas is quite thin, and I’m concerned that the stiffness might not be sufficient. However, after researching various sources, I couldn’t find any information on how to calculate the stiffness. Or is it sufficient as long as the wall thickness is greater than the calculated value? Could everyone please help take a look and tell me what should be done?
The calculated value for wall thickness is clearly specified in standards such as GB/T 12224 or ASME B16.34, which also provide reference values for the minimum wall thickness
This post was last edited by WuduBuZhangfu on July 19, 2017, at 23:03. Addition: GB 26640-2011, “Specifications for minimum wall thickness of valve casings”, has been revised to a recommended standard; in essence, it no longer holds any practical significance.