About Flange

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About Flange

Post  landoo on Wed Mar 13, 2013 7:30 pm

Flange, also known as flange or flange plate. Flanges are interconnected so that the tube with the tube parts connected to the tube end; also useful device ago on the flange, for the connection between the two devices, such as the reducer flange. Flange connection or flange joints, flanges, gaskets and bolts three interconnected as a combination of sealing structure removable connection, the flange pipe flanges means piping plumbing fixtures, used in the device refers to equipment and outlet flanges. Holes in the flange, bolt the two flange abuts. Flange gasket sealing. Flange flange the sub threaded connection (threaded connection) and the welded flange and clip flange. The flanges are used in pairs, low pressure pipeline can use silk flange, the pressure welding flanges for more than four kilograms. Plus sealing point between the two flanges, and then secured with bolts. The different pressures flange have different thickness and the use of different bolts. Pumps and valves, and pipe connections, facilities and equipment of the local, but also made a corresponding flange shape, also called a flange connection. All in two planes used in the surrounding bolted closed simultaneously connected parts, generally known as the "flange", such as ventilation pipe connections, this type of parts can be called a "flange parts. But this connection is only local device, such as flange connections and pumps, it is not good to pump called the "flange parts. Relatively small, such as valves, can be called "flange parts.
Flange connection is the two pipes, pipe fittings or equipment, between the first respective fixed on a flange, the two flanges, plus flange gasket, are fastened together with bolts, and complete the connection. Fittings and equipment already comes with a flange, also belongs to the flange connection. The flange connections easy to use, able to withstand greater pressure. The use of a wide range of industrial pipe flange connection. Within the family, the small diameter of the pipe, and low pressure, invisible flange connection. If a boiler room or production site, everywhere flange connection pipe and equipment.
The gasket is able to produce plastic deformation, and having a certain intensity of the material of the ring. Most of the gasket is cut down from the non-metallic plate or size produced by a professional factory in accordance with the regulations, its material is asbestos rubber sheet, asbestos sheet, PTFE sheet, polyethylene sheet; useful thin metal plate wrapped up the asbestos and other non-metallic material made of metal package gasket; There are spiral wound gasket with wound together by a thin strip asbestos. Applicable to ordinary rubber gasket occasions at a temperature below 120 ° C; asbestos rubber gasket suitable for the steam temperature is lower than 450 ° C, the oil temperature is lower than 350 ° C, pressure less than 5MPa occasions for general corrosion medium, most commonly used are acid-resistant asbestos board. Copper, aluminum, steel, stainless steel (No. 10) in the high-pressure equipment and piping, lens type, or other shapes of metal shim. The high-pressure gasket and the sealing surface of the contact width is very narrow (line contact), the sealing surface and the processing of the gasket finish higher.

landoo

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