70 Graphite Rupture Disks Graphite Rupture Disks Inverted Type Safety Relief Valve Protection Options Disk Size MNFA Thickness* (Flange Group 1) (Flange Group 2) ASME B16.5 Class NPS DN Actual ID Full Bore w/ External Vacuum Support ASME Cl 150 PN6 / 10 / 16 / 20 JIS 5K / 10K / 16K ASME Cl 300 / 600 PN25 / 40 / 50 JIS 20K / 30K Standard Disk Insulated Unit Standard Disk Insulated Unit 150 300 600 PN6 in mm mm in mm in2 mm2 in2 mm2 in mm in mm in mm in mm in mm in mm in mm in mm ½ 13 15 0.62 15.7 0.30 193 - - 0.625 16 - - 0.625 15.875 - - 1.75 44.4 2.00 50.8 2.00 50.8 1.73 43.9 ¾ 19 20 0.82 20.8 0.53 341 - - 0.625 16 - - 0.625 15.875 - - 2.13 54.1 2.50 63.5 2.50 63.5 2.13 54.1 1 25 25 1 25.4 0.78 503 0.34 219 0.875 22.3 2.125 54 1 25.4 2.375 60.4 2.50 63.5 2.75 69.8 2.75 69.8 2.52 64.0 1-½ 38 40 1.50 38.1 1.76 1,135 0.76 490 0.875 22.3 2.125 54 1 25.4 2.375 60.4 3.25 82.5 3.63 92.2 3.63 92.2 3.39 86.1 2 50 50 2 50.8 3.14 2,025 1.36 877 0.875 22.3 2.125 54 1 25.4 2.375 60.4 4.00 101.6 4.25 107.9 4.25 107.9 3.78 96.0 2-½ 64 65 2.50 63.5 4.78 3,083 2.58 1,664 0.875 22.3 2.125 54 1 25.4 2.375 60.4 4.75 120.6 5.00 127.0 5.00 127.0 4.59 116.5 3 76 80 3 76.2 7.06 4,554 3.87 2,496 0.875 22.3 2.125 54 1.25 31.75 2.875 73 5.25 133.3 5.75 146.0 5.75 146.0 5.20 132.0 4 102 100 4 101.6 12.56 8,103 5.77 3,722 0.875 22.3 2.125 54 1.25 31.75 2.875 73 6.75 171.4 7.00 177.8 - - 5.98 151.8 5 127 125 5 127.0 19.63 12,664 8.39 5,412 0.875 22.3 2.125 54 g g g g 7.75 196.8 8.28 210.3 - - 7.16 181.8 6 152 150 6 152.4 28.27 18,238 14.78 9,535 0.875 22.3 2.125 54 1.75 44.45 3.875 98.5 8.63 219.2 9.75 247.6 - - 8.15 207.0 8 203 200 8 203.2 50.02 32,270 25.81 16,651 1.125 28.6 2.625 66.7 2.25 57.15 4.875 123.9 10.88 276.3 12.00 304.8 - - 10.31 261.8 10 254 250 10 254.0 78.53 50,664 32.70 21,096 1.5 38.1 3.375 85.7 - - - - 13.25 336.5 - - - - 12.48 316.9 12 305 300 12 304.8 113.09 72,961 47.24 30,477 2 50.8 4.375 111.2 - - - - 16.00 406.4 - - - - 14.69 373.1 14 356 350 13.25 336.5 137.88 88,954 - - 2.25 57.2 4.875 123.8 - - - - 17.63 447.8 - - - - 16.65 422.9 16 406 400 15.25 387.3 182.65 117,838 - - 2.5 63.5 5.375 136.6 - - - - 20.13 511.3 - - - - 18.62 472.9 18 457 450 17.25 438.1 233.70 150,773 - - 2.75 69.8 5.875 149.3 - - - - 21.50 546.1 - - - - 20.79 528.0 20 508 500 19.25 488.9 291.03 187,760 - - 3 76.2 6.375 162 - - - - 23.75 603.2 - - - - 22.76 578.1 24 610 600 23.25 590.5 424.55 273,902 - - 3 76.2 6.375 162 - - - - 28.13 714.5 - - - - 26.73 678.9 Notes: *Standard disk thickness does not include gaskets. Insulated unit thickness includes all gaskets p Max pressure based on max design Pressure/Temperature of companion flanging selected g Contact ZOOK • Disks w/pressure ratings of 25 psig (1.72 barg) and above will support full vacuum w/o additional support • Contact ZOOK Engineering for applications with less than full vacuum or Bak-Pressure • Maximum pressure rating of ASME B16.5 Class 150 flanges is 290 psig (19.99 barg) @ 100°F (38°C). ASME B16.5 Class 300 flanges is 750 psig (51.71 barg) @ 100°F (38°C). The maximum pressure rating is lower at higher temperatures. Reference ASME/ANSI B16.5 • All pressures shown are based on an ambient temperature of 72°F (22°C) • Not all minimum/maximum pressure and temperature combinations are available. Please contact ZOOK for more information • Unless otherwise noted, stated MNFA and Kr values apply to the rupture disk only and does not include the addition of external vacuum supports or insulated units Features • The best choice for higher burst ratings • Available in nominal sizes 1/2” (15mm) thru 24” (600mm) diameters • Fail-Safe Design: If the disk is damaged or installed upside-down, it is designed to burst at or below the marked burst rating • DesignedtofitindustrystandardflangesASMEB16.5,ISOandJIS • Burst ratings 0.25 psig (0.02 barg) to 1,000 psig (68.95 barg) or higher • 0% manufacturing range • Flat surface of the disk contacts the process media • Operating pressures to 90% of the disk’s marked burst pressure. Contact ZOOK for operating ratio for burst pressures below 40 psig (2.76 barg) • Temperature ratings –290°F to +700°F (–179°C to +371°C) Maximum temperature rating without insulation is 430°F (221°C)or700°F(371°C)withinsulation.ContactZOOKforhighertemperatureratings.Thespecifiedtemperatureshallbe at the disk location at the time when the disk is expected to rupture • Allflangegroup2disksarearmored • Many standard Inverted disks in common sizes and pressure ratings are available for RAPID Delivery. Contact ZOOK for more information Sizesin(mm):3”(80),4”(100),6”(150),8”(200)tofitASMEB16.5Class150flanges Burst Pressures psig (barg): 125 (8.62) and 150 (10.34) Note: RAPID Delivery Inverted disks are supplied with adhesive tags • ASME (UD) and PED (CE) compliance available Features Specifications
ZOOK Product Catalog 2024 - Full
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