Are there any standards for the inlet and outlet flanges of centrifugal pumps? What are the requirements for selecting flanges that are compatible with them?
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Are there any standards for the inlet and outlet flanges of centrifugal pumps? What are the requirements for selecting flanges that are compatible with them?
It depends on the standards set by the equipment manufacturer; generally, the GB standard is used quite often. Additionally, if it needs to match the flange you are using, you should specify the flange standard when placing the order.
The inlets and outlets of the pump body generally comply with the JB standards set by the Ministry of Machinery Industry, or the **GB standards; for chemical process pumps, they follow the HG standards set by the Ministry of Chemical Industry. The process flanges used at the pump’s inlets and outlets are usually selected in accordance with the HG standards. . . :lol
As long as the flange standard is specified, pump manufacturers can meet it!
The pump port flange is selected based on one’s own process requirements; it must have the same size and spacing between its openings, and the sealing lines of the flanges must also be consistent
In accordance with the process requirements, our company uses HG20592-97B for all applications, and the matching flanges also adhere to the same standard.
It is generally required that the manufacturer provide matching flanges, regardless of any standards. Of course, if Party A has such a requirement, then the manufacturer should meet it.
The HG20594 raised-neck flat welding flange is a structural type that has been widely used in petrochemical plants introduced in recent years. It is suitable for pressure levels of 0.6–4.0 MPa. The flange standards and dimensions for pumps must be agreed upon with the pump manufacturer, so that the flanges on the pipelines can match properly; this is because the dimensions of some imported pumps differ from the nominal diameters of domestic pipelines, which can lead to mismatches.
If you make a request, the pump factory will provide one for you
Some imported pumps have dimensions that differ from the nominal diameters of domestic pipelines, resulting in a mismatch.