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flange face phonographic finish

//flange face phonographic finish

flange face phonographic finish

The ASME B16.5 code requires that the flange face (raised face and flat face) has a specific roughness to ensure that this surface be compatible with the gasket and provide a high quality seal. But a machined finish added to the raised face on a flange to give an extra level of security to prevent leaks and maintain effective seals. Your customer doesn't even know what a phonographic finish is! Oversized ring gear accommodates extremely high torque levels for challenging flange repair applications, and these machines are able to generate a phonographic finish. Both radial and axial feed is achieved with a pneumatic feedbox. Manual feeding for rapid positioning is … Face Finish Flange face finish The ASME B16.5 code requires that the flange face (raised face and flat face) has a specific roughness to ensure that this surface be compatible with the gasket and provide a high quality seal. As others have said, it's a flange finish for pressure retaining fittings. The 6 available types of flange face are flat (FF), raised (RF), ring joint (RTJ), lap joint, male and female (M&F), tongue and groove (T&G). An example would be ANSI B16.5 which specifies face finishes within a range 125AARH - 500AARH (3.2 Ra to 12.5 Ra). Flexible and Versatile. It's one of the 3 major types: Flat, Concentric, and Phonographic. Flat is used for low pressure only, less than class 100. Flanges with different faces require different gaskets and shall never be mated to prevent leakage of the joint. In a bolted flange joint, the flange face is in direct contact with the gasket. Cold Water - It has a mirror like finish. A serrated finish, either concentric or spiral, is required with 30 to 55 grooves per inch and a resultant roughness between 125 and 500 micro inches. The flange face is the surface area that hosts the gasket. clamping system and a 1” to 10” I.D. […] For the height measures H and B of all described dimensions of flanges on this website, with exception of the Lap Joint flange, it is important to understand and remember the following: Steel flanges are available with four basic face finish, however, the common objective of any type of flange face finish is to create the desired roughness on the face of a flange to ensure a strong match between the flange, the gasket, and the mating flange and thus provide a high-quality seal. A phonographic finish is more difficult to seal than a concentric serrated finish. Flange Face Finish. The Esco FLANGE HOG 110® is a manually operated hand tool with a rigid I.D. The facing finish or face finish of a pipe flange manufactured in accordance with ASME B16.5 refers to the smoothness or roughness of the facing surface. An easy to use manually operated tool for re-facing damaged flanges and restoring them to like-new condition with a phonographic finish, virtually anywhere, is being introduced by Esco Tool of Holliston, Massachusetts. The Standard Facing for the B16.5 and B16.47 Flanges is known as a Phonographic Finish which is a continuous groove which is generated by using a 1/16” Radius round nosed tool with a cutting speed of 1/32” per revolution, this results in a 125-250 RMS finish. Complete flow of gasket material must reach to the bottom of the ‘valley” surface in a phonographic finish to avoid a spiral leak path from one end of the spiral to the outside. The typical flange face finish for ASME B16.5 RF flanges is 125 to 250 µin Ra (3 to 6 µm Ra). The flange face finish is determined by the standard used and measured as an Arithmetical Average Roughness Height (AARH). B16.5 which specifies face finishes within a range 125AARH - 500AARH ( 3.2 to! 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By | 2021-01-11T04:35:06+00:00 January 11th, 2021|Categories: Uncategorized|