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Whats the Maximum Allowable Working Pressure for SIFCO insert flanges?

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Whats the Maximum Allowable Working Pressure for SIFCO insert flanges?

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When determining the Pressure Rating for SIFCO insert flanges keep in mind there are two classifications, ‘Conventional’ and ‘ASME Rated’. Conventional Due to the differences between SIFCO’s ‘Conventional’ jacket insert flange design and standard ASME/ANSI B16.5 flanges, calculations were performed to establish a MAWP Table (Table 2 pg. 6 SIFCO catalog). In some cases, values exceed the ASME ratings, and in others, values are below the ASME ratings. These calculations conform to the procedures detailed in Appendix 2 of the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1. They were based on the use of standard 1/8î thick asbestos-equivalent gaskets and carbon steel bolts to SA-307 B. Flanges are forged carbon steel to SA-105 and inserts covered by these ratings may be type 304, 316, 304L or 316L. The MAWP on SIFCO’s ‘Conventional’ jacket insert flanges have been established without calculating for flange protection due to over-bolting using SA-193-B7 bolts. The ASME code

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