Pressure-Piping Codes

Pressure-Piping Code The code for pressure piping (ANSI B31) consists or a number of sections which collectively constitute the code. Table 10-14 shows the status of the B31 code as of December 1980. The sections are published as separate documents for simplicity and convenience. The sections differ extensively. 

Temperature markings. When valves are rated for services other than steam, they will carry the temperature rating marked with numerals followed by the letter F. Cast-iron valves, which usually carry no temperature markings are the exception to this rule. The user should consult the ASME Boiler Code, the Pressure Piping Code, etc., for limiting conditions of cast-iron valves. 

CSA B51, Boiler, Pressure Vessel and Pressure Piping Code, Canadian Standards Association, 178 Rexdale Blvd., Etobicoke, Ontario, Canada M9W 1R3. 

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