Outlet pressure limit for temperatures above 100f

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Unformatted text preview: 275 720 720 73/4 73/4 73/4 913/16 913/16 81/4 81/4 81/4 93/16 93/16 180 465 930 1395 2330 275 275 275 720 720 73/4 73/4 73/4 913/16 913/16 81/4 81/4 81/4 93/16 93/16 Temperature Range, Ð 20¡F to 500¡F Carbon Steel 4M6 4M6 4M6 4M6 4M6 150 300 600 900 1500 150 150 150 300 300 285 740 1480 2220 3705 Temperature Range, Ð 450¡F to 500¡F Austenitic Stainless Steel 4M6 4M6 4M6 4M6 4M6 150 300 600 900 1500 150 150 150 300 300 275 720 1440 2160 3600 275 720 1440 2160 3600 Temperature Range, Ð 20¡F to 500¡F Nickel/Copper Alloy 4M6 4M6 4M6 4M6 4M6 150 300 600 900 1500 150 150 150 300 300 140 360 720 1080 1800 Alloy 20 (3) 4M6 4M6 4M6 4M6 4M6 150 300 600 900 1500 150 150 150 300 300 230 600 1200 1800 3000 Notes: 1. Outlet pressure limit for temperatures above 100¡F shall not exceed the rating in ANSI/ASME B 16.34. 2. Materials given are minimum requirements for the pressure and temperature ratings. Other suitable materials may be used, as required, for the service involved. 3. Material limited to 300¡F. Pressure ratings indicated in the 500¡F column are limited to 300¡F. Copyright American Petroleum Institute Reproduced by IHS under license with API No reproduction or networking permitted without license from IHS Licensee=TECNA/5935100001 Not for Resale, 05/05/2005 09:50:16 MDT --``,,,`,``,,`````,,,,,`,,,``-`-`,,`,,`,`,,`--- Temperature Range, Ð 20¡F to 300¡F FLANGED STEEL PRESSURE RELIEF VALVES 27 Table 25—Pilot-operated Pressure Relief Valves “N” Orifice (Effective Orifice Area = 4.34 square in.) Valve Size ANSI Flange Class Maximum Pressure (psig) Set Pressure Limit Body Inlet by OriÞce by Outlet Inlet Outlet Ð 450¡F to Ð 21¡F Ð 20¡F to 100¡F Outlet Pressure Limit (1) Center to Face Dimensions (in.) 500¡F 100¡F Inlet Outlet 170 600 1200 1795 2995 285 285 285 740 740 73/4 73/4 73/4 913/16 913/16 81/4 81/4 81/4 93/16 93/16 170 480 955 1435 2390 275 275 275 720 720 73/4 73/4 73/4 913/16 913/16 81/4 81/4 81/4 93/16 93/16 140 360 720 1080 1800 275 275 275 720 720 73/4 73/4 7...
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