Description of the meanings of different types of check valves
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This post was last edited by leo_0088 on 2015-8-17 at 10:29. The type description of the check valve is dual plate through drilled lug type; is this a type of clamp-on valve? Do you know how to find out the installation method and dimensions?
My English is not good. The vast majority of check valves are installed at the outlet of mechanical pumps, with a small number installed on the feed lines of containers. The installation method is usually indicated on the PID ； If not specified, it depends on the specific structure. The dimensions are usually listed on the material list. If the design institute does not provide it, you may purchase the one with a higher specification based on your own selection of pipelines.
This post was last edited by Sammy_Wang on 2015-8-17 at 18:54; detailed explanations are available there.
Thank you to the person above for their help and the specifications provided!
There’s nothing hidden about regular standards, right? @Sammy_Wang
I don’t know; the old man said no, but some in the touring group said it’s okay. http://bbs.hcbbs.com/thread-1410146-1-1.html
The post mentioned that APIs are not suitable, so it’s better not to publish it openly – safety first!! This is a lug-type flanged check valve, and the relevant standard is API 594 \"Check Valves: Flanged, Lug, Wafer, And Butt-Welding\"
I think it should be a butterfly double-disc check valve with a butt-welding connection style, meaning it has only two flanges, which is different from traditional flange connections (which usually involve four flanges). This design allows for a reduction in the valve’s weight, lowers the additional stress exerted by the valve on the pipeline, and also helps to reduce costs. Such a structure is widely used on butterfly valves.