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Flange basics summary

source:[seo:selfurl]    release time : 2018-11-18 11:36

Flanges are disc-shaped parts that are most common in plumbing and flanges are used in pairs. In plumbing, flanges are primarily used for pipe connections. In the pipelines that need to be connected, a variety of flanges are installed, and the low-pressure pipelines can use wire-bonded flanges, and the welding flanges are used at pressures above 4 kg. A sealing point is added between the two flanges and then fastened with bolts. Different pressure flanges have different thicknesses and use different bolts. Pumps and valves, when connected to the pipe, are also made of corresponding flange shapes, also known as flange connections. Connection parts that are closed at the same time by bolting on both planes are generally referred to as "flanges". For example, the connection of ventilation ducts may be referred to as "flange parts". However, this connection is only a part of the equipment, such as the connection between the flange and the water pump, it is not good to call the pump "flange parts". Smaller such as valves, etc., can be called "flange parts".
There are many types of flanges. Generally used are flat flanges, butt weld flanges (long neck flanges), loop flanges, etc. Flat welding flange is used for medium and low pressure. It adopts plug welding and welding on both sides. The welding depth is 2-5mm from the flange sealing surface. The butt welding flange can be directly butt welded. The loose flange bolt connection does not need welding.
      The flange is a link that connects the valve to the pipe. That is, the joint is bolted when the valve is connected to the pipe. Therefore, the N-uniform bolt holes on both ends of the valve are flanged.
1. Flange: Flange is the transliteration of flange, meaning flanged things, parts, which can be separate, flanges, or combined, such as one or both ends of the pipe. Flange, there are several through holes on the flange to install the screws. Some bearings have flanges on the outer ring. This flange can be used with or without holes. It is only used for rib positioning.
2. Flange type: The connection between the valve and the pipeline or machine equipment is flanged, that is, the connection method is called flange type.
     The looper flange is a movable flange. It is usually matched on the water supply and drainage fittings (the most common one on the telescopic section). When the factory leaves the factory, there is a flange at each end of the expansion joint, which is directly connected with the pipeline in the project. The equipment is bolted.


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