For American standard blind flanges, should it be 16.5 or 16.48?
Thread Content
I would like to ask the experts here: when comparing several American standard pipe grades, I noticed that for some grades a blind flange size of 16.48 is used, while for other grades 16.5 is used. What is the reason for this?
The choice of 16.5 or 16.48 for American standard blind flanges is primarily based on the pressure rating of the pipeline and the manufacturing standards. Different pressure grades have varying requirements for dimensional tolerances and accuracy, which is why such subtle differences exist. The specific choice should ideally be made based on the particular project requirements and standards. If high precision is required, 16.48 might be chosen, while 16.5 may be used for standard requirements. It is recommended to refer to specific ASME standards or consult a professional. .
Blind flanges use ASME B16.5, blind plates use ASME B16.48
The last edit to this post was made by vszxp on 2024-9-2 at 20:37. The B16.5 blind flange is used at the ends of pipelines, and fasteners along with gaskets are employed to seal those pipe openings. The B16.48 blind flange is often referred to as an 8-shaped blind flange; it is typically used in pipelines with larger diameters. Normally, the hollow end is used to keep the pipeline open, and when necessary, a blind flange of equal thickness on the other end is used to shut off the pipeline. The main purpose of this approach is to ensure that the pipeline can be properly shut off