800.323.0688

Series 560 Safety Valves



560 Cut View


Series 560 / 570 / 563 / 573
ITEM DESCRIPTION 560 / 570 563 / 573
1 Body B16/B62-C83600 A479-316 SS
2 Bonnet B584-C84400 B584-C84400
3 Lower Ring B584-C84400 B584-C84400
4 Lock Screw B16 B16
5 Upper Ring B584-C84400 B584-C84400
6 Spring Support B16 B16
7 Lift Lever Steel / Plated Steel / Plated
8 Seal Wire Steel / Galvanized Steel / Galvanized
9 Hood Aluminum / Plated Aluminum / Plated
10 Lifter Nut B16 B16
11 Jam Nut 18-8 18-8
12 Lever Pin B16 B16
13 Pressure Screw B16 B16
14 Lock Nut B16 B16
15 Stem B16 B16
16 Spring Plate B16 B16
17 Spring 17-7 17-7
18 Lock Nut B16 B16
19 Ball Bearing 440 440
20 Disc B16 A479-316 SS
21 Name Plate Stainless Stainless






Series 560-563-570-573
Orifice Flow Area
In2 (mm2)
Inlet Outlet DN Size
I.D.
Dimensions – In. (mm) Weight
Lbs. (Kg)
A B C
D .125 (80.6) 1/2” 3/4” 15 C 7­-3/8" (187) 2­˗1/2" (64) 1­˗3/8" (35) 1.7 (.77)
D .125 (80.6) 3/4” 3/4” 20 D 7­˗3/8" (187) 2­˗1/2" (64) 1­˗3/8" (35) 1.7 (.77)
E .221 (142.6) 3/4” 1” 20 D 7­˗5/8" (194) 2­˗5/8" (67) 1­˗1/2" (38) 2.2 (1)
E .221 (142.6) 1” 1” 25 E 7­˗5/8" (194) 2­˗5/8" (67) 1­˗1/2" (38) 2.2 (1)
F .352 (227.1) 1” 1-1/4” 25 E 8­˗3/4" (222) 2­˗7/8" (73) 1­˗3/4" (44) 3 (1.4)
F .352 (227.1) 1-1/4” 1-1/4” 32 F 8­˗3/4" (222) 2­˗7/8" (73) 1­˗3/4" (44) 3 (1.4)
G .567 (365.8) 1-1/4” 1-1/2” 32 F 9­˗5/8" (244) 3­˗3/8" (86) 2 " (51) 4 (1.8)
G .567 (365.8) 1-1/2” 1-1/2” 40 G 9­˗5/8" (244) 3­˗3/8" (86) 2 " (51) 4 (1.8)
H .899 (580.0) 1-1/2” 2” 40 G 9­˗3/4" (248) 3­˗1/2" (89) 2­˗1/8" (54) 5.8 (2.6)
H .899 (580.0) 2” 2” 50 H 11 " (279) 3­˗1/2" (89) 2­˗1/8" (54) 5.8 (2.6)
J 1.463 (943.9) 2” 2-1/2” 50 H 11 " (279) 3­˗7/8" (98) 2­˗5/8" (67) 9.7 (4.4)
J 1.463 (943.9) 2-1/2” 2-1/2” 65 J 12­˗1/2" (318) 3­˗7/8" (98) 2­˗5/8" (67) 9.7 (4.4)


Series Inlet
Sizes
Metals Min. Temp
°F (°C)
Max. Temp
°F (°C)
Max Pressure
PSI (Bar)
Services Certifications
560 1/2” to 2” Brass/Bronze -20° -(29°) 406° (208°) 250 (17.2) Steam ASME I, CE, CRN
563 1/2” to 2” Stainless/Bronze -20° -(29°) 425° (218°) 250 (17.2) Steam ASME I, CE, CRN
570 1/2” to 2” Brass/Bronze -20° -(29°) 406° (208°) 300 (20.7) Air / Gas / Steam ASME VIII, CE, CRN
573 1/2” to 2” Stainless/Bronze -20° -(29°) 425° (218°) 300 (20.7) Air / Gas / Steam ASME VIII, CE, CRN





SEATING


560 Cut View
Soft seat option
ITEM DESCRIPTION 560 / 570 563 / 573
22 Disc B16 A479-316 SS
23 O-Ring Various Various
24 Center Insert B16 A479-316 SS
25 Screw 18-8 Stainless 18-8 Stainless






Seating Materials
Material Names Min Temp
°F (°C)
Max Temp
°F (°C)
*Use for:
FKM Viton-A -13° -(25°) 446° (230°) Acetone, Air, Alcohol, Benzine, Butane, Ethylene, Ethylene Glycol, Ethyl Alcohol, Gasoline, Isobutyl Alcohol, Kerosene, Lube Oil, Natural Gas, Naphtha, Nitrogen, Propane, Water, Xylene
Nitrile Buna-N -40° -(40°) 250° (121°) Air, Butane, Carbon Dioxide, Diesel Oil, Ethyl Chloride, Ethyl Ether, Fuel Oil, Gasoline, Helium, Hydrogen Sulphide, Kerosene, Natural Gas, Nitrogen, Oxygen (Gas), Propane
EPDM
-40° -(40°) 303° (151°) Steam, Water, Hot Water, Acetone, Beer, Brake Fluid, Hydrogen Gas, Sulfur Dioxide, Acids, Alkalies
FFKM Kalrez® -10° -(23°) 550° (288°) Aromatic Hydrocarbons, Chlorinated Hydrocarbons, Polar Solvents (ketones, esters, ethers), Inorganic and Organic Acids, Water, and Steam (Steam service up to 380°F (193°C) saturated)
PTFE
-300° -(184°) 450° (232°) Cryogenic Service including Argon, Carbon Dioxide, Helium, Hydrogen, Nitrogen, Oxygen, Steam







Note:
For more information on o-ring materials, visit:
Marco Rubber O-Ring Comparison
Apple Rubber Selection Guide




ORDERING


Series 560 thru 573 Part Numbers
573 DC 1 M 1 L 1 250
Series/Description Orifice/Size ID Connection Seating Cap Service Options Set
560- Brass/bronze
Section I
DC- 1/2" x 3/4" 1- NPT MxF M- Metal 1- Lift lever K- ASME VIII - Air/gas 1- None Ex.250
DD- 3/4" x 3/4" 2- NPT FxF P- PTFE 3- Packed lift lever L- ASME VIII - Steam 2- Chrome
Plating

563- 316 SS/Bronze
Section I
ED- 3/4" x 1" 3- BSPT MxF E- EPDM 4- Lift Lever with
Anti Vibe Spring
A- ASME I Steam
EE- 1" x 1" 4- BSPT FxF V- Viton P- CE - Air/gas 3- O2
Cleaned

570- Brass/bronze
Section VIII
FE- 1" x 1-1/4" 8- BSPP MxF B- Buna 6- Packed Lever with Test Gag E- CE - Steam
FF- 1-1/4" x 1-1/4" 9- BSPP FxF K- Kalrez N- Non-code Air/gas


573- 316 SS/bronze
Section VIII
GF- 1-1/4" x 1-1/2"



9- Easy Test Lever T- Non-code Steam


GG- 1-1/2" x 1-1/2"












HG- 1-1/2" x 2"












HH- 2" x 2"












JH- 2" x 2-1/2"












JJ- 2-1/2" x 2-1/2"
















CAPACITIES


ASME Section I Steam


Series 560 Capacities
Steam Lbs/hr – ASME Section I

Series 560 Capacities
Steam Kg/hr – ASME Section I
Set
PSI
Orifice area in^2 Flow Coefficient = .856
Set
PSI
Orifice area in^2 Flow Coefficient = .856
“D” “E” “F” “G” “H” “J”
“D” “E” “F” “G” “H” “J”
.125 .221 .352 .567 .899 1.463
80.6 142.6 227.1 365.8 580.0 943.9
5 120 211 337 542 860 1400
0.2 49 87 138 222 352 573
10 147 260 414 667 1058 1722
0.5 60 106 169 272 431 701
15 175 309 492 792 1256 2044
1 78 138 220 354 561 913
20 202 358 569 917 1454 2367
2 114 202 322 518 822 1337
25 230 406 647 1042 1653 2689
3 150 266 424 683 1082 1761
30 257 455 725 1167 1851 3012
4 187 330 526 847 1343 2185
35 285 504 802 1292 2049 3334
5 223 395 629 1013 1607 2615
40 312 552 880 1417 2247 3657
6 261 461 734 1183 1875 3052
45 340 601 957 1542 2445 3979
7 298 527 839 1352 2144 3489
50 368 650 1035 1667 2643 4302
8 335 593 944 1521 2412 3926
55 395 699 1113 1792 2842 4624
9 373 659 1050 1691 2681 4362
60 423 747 1190 1917 3040 4947
10 410 725 1155 1860 2949 4799
65 450 796 1268 2042 3238 5269
11 447 791 1260 2029 3218 5236
70 478 846 1347 2170 3440 5598
12 484 857 1365 2199 3486 5673
75 507 896 1427 2298 3644 5930
13 522 923 1470 2368 3755 6110
80 535 946 1507 2427 3848 6262
14 559 989 1575 2537 4023 6547
85 563 996 1587 2556 4052 6595
15 596 1055 1680 2707 4292 6984
90 592 1046 1667 2685 4256 6927
16 634 1121 1785 2876 4560 7421
95 620 1097 1747 2813 4461 7259
17 671 1187 1891 3045 4829 7858
100 649 1147 1826 2942 4665 7591







110 705 1247 1986 3199 5073 8255







120 762 1347 2146 3457 5481 8920







130 819 1448 2306 3714 5889 9584







140 876 1548 2466 3972 6297 10248







150 932 1648 2626 4229 6706 10913







160 989 1749 2785 4487 7114 11577







170 1046 1849 2945 4744 7522 12241







180 1103 1949 3105 5002 7930 12905







190 1159 2050 3265 5259 8338 13570







200 1216 2150 3425 5517 8747 14234







210 1273 2251 3585 5774 9155 14898







220 1330 2351 3744 6031 9563 15563







230 1386 2451 3904 6289 9971 16227







240 1443 2552 4064 6546 10379 16891







250 1500 2652 4224 6804 10788 17556







Set pressures below 15 PSI (1.03 Bar) are NON-Code.
Maximum back-pressure is 10% of set pressure or 50 PSI (3.45 Bar) whichever is less.
Lifting Device as required by the ASME:   ASME Section I - PG-73.2.4
Each safety valve shall have a substantial lifting device, which when activated will release the seating force on the disc when the valve is subjected to a pressure of at least 75% of the set pressure.



ASME Section VIII Steam


Series 570 Capacities
Steam Lbs/hr – ASME Section VIII

Series 570 Capacities
Steam Kg/hr – ASME Section VIII
Set
PSI
Orifice area in^2 Flow Coefficient = .856
Set
PSI
Orifice area in^2 Flow Coefficient = .856
“D” “E” “F” “G” “H” “J”
“D” “E” “F” “G” “H” “J”
.125 .221 .352 .567 .899 1.463
80.6 142.6 227.1 365.8 580.0 943.9
5 125 221 352 567 900 1464
0.2 51 91 145 234 370 603
10 153 270 430 692 1098 1787
0.5 62 110 176 283 449 730
15 180 319 507 817 1296 2109
1 80 142 227 365 579 942
20 208 367 585 942 1494 2431
2 117 206 329 529 840 1366
25 235 416 663 1067 1692 2754
3 156 276 440 709 1124 1830
30 263 465 740 1192 1890 3076
4 196 347 553 890 1411 2297
35 293 518 826 1330 2108 3431
5 236 417 665 1071 1698 2763
40 323 572 911 1467 2326 3786
6 276 488 777 1252 1985 3230
45 354 625 996 1605 2544 4141
7 316 558 889 1433 2271 3696
50 384 679 1082 1742 2762 4495
8 355 629 1002 1613 2558 4163
55 414 733 1167 1880 2980 4850
9 395 699 1114 1794 2845 4630
60 445 786 1252 2017 3198 5205
10 435 770 1226 1975 3132 5096
65 475 840 1338 2155 3416 5559
11 475 840 1338 2156 3418 5563
70 505 893 1423 2292 3634 5914
12 515 911 1451 2337 3705 6030
75 536 947 1508 2430 3852 6269
13 555 981 1563 2518 3992 6496
80 566 1001 1594 2567 4070 6624
14 595 1052 1675 2698 4279 6963
85 596 1054 1679 2705 4288 6978
15 634 1122 1788 2879 4565 7430
90 627 1108 1764 2842 4506 7333
16 674 1193 1900 3060 4852 7896
95 657 1161 1850 2979 4724 7688
17 714 1263 2012 3241 5139 8363
100 687 1215 1935 3117 4942 8043
18 754 1334 2124 3422 5425 8829
110 748 1322 2106 3392 5378 8752
19 794 1404 2237 3603 5712 9296
120 808 1429 2276 3667 5814 9461
20 834 1475 2349 3783 5999 9763
130 869 1536 2447 3942 6250 10171
20.7 862 1524 2427 3910 6200 10089
140 930 1644 2618 4217 6686 10880







150 990 1751 2789 4492 7122 11590







160 1051 1858 2959 4767 7558 12299







170 1111 1965 3130 5042 7994 13009







180 1172 2072 3301 5317 8430 13718







190 1233 2179 3471 5592 8866 14428







200 1293 2287 3642 5866 9302 15137







210 1354 2394 3813 6141 9737 15846







220 1415 2501 3983 6416 10173 16556







230 1475 2608 4154 6691 10609 17265







240 1536 2715 4325 6966 11045 17975







250 1596 2822 4495 7241 11481 18684







260 1657 2930 4666 7516 11917 19394







270 1718 3037 4837 7791 12353 20103







280 1778 3144 5008 8066 12789 20813







290 1839 3251 5178 8341 13225 21522







300 1899 3358 5349 8616 13661 22231







Set pressures below 15 PSI (1.03 Bar) and above 250 PSI (17.2 Bar) are NON-Code.
Maximum back-pressure is 10% of set pressure or 50 PSI (3.45 Bar) whichever is less.
Lifting Device as required by the ASME, ASME Section VIII: UG136(3) Each pressure relief valve on air, water at the valve inlet that exceeds 140°F (60°C), excluding
over-pressure or relief events, or steam service shall have a substantial lifting device which when activated will release the seating force on the disc when the pressure
relief valve is subjected to a pressure of at least 75% of the set pressure of the valve.


ASME Section VIII Air


Series 570 Capacities
Air SCFM – ASME Section VIII

Series 570 Capacities
Air Nm3/hr – ASME Section VIII
Set
PSI
Orifice area in^2 Flow Coefficient = .856
Set
PSI
Orifice area in^2 Flow Coefficient = .856
“D” “E” “F” “G” “H” “J”
“D” “E” “F” “G” “H” “J”
.125 .221 .352 .567 .899 1.463
80.6 142.6 227.1 365.8 580.0 943.9
5 45 79 125 202 320 521
0.2 69 121 193 311 494 803
10 54 96 153 246 391 636
0.5 83 147 234 377 598 973
15 64 113 181 291 461 751
1 107 190 302 487 772 1256
20 74 131 208 335 532 865
2 156 275 438 706 1119 1821
25 84 148 236 380 602 980
3 208 369 587 945 1499 2440
30 94 165 263 424 673 1095
4 261 463 737 1187 1881 3062
35 104 184 294 473 750 1221
5 315 557 886 1428 2264 3684
40 115 204 324 522 828 1348
6 368 651 1036 1669 2646 4306
45 126 223 355 571 906 1474
7 421 744 1186 1910 3028 4928
50 137 242 385 620 983 1600
8 474 838 1335 2151 3410 5550
55 147 261 415 669 1061 1726
9 527 932 1485 2392 3793 6172
60 158 280 446 718 1138 1853
10 580 1026 1635 2633 4175 6794
65 169 299 476 767 1216 1979
11 633 1120 1784 2874 4557 7416
70 180 318 506 816 1294 2105
12 686 1214 1934 3115 4939 8038
75 191 337 537 865 1371 2231
13 740 1308 2084 3356 5322 8660
80 201 356 567 914 1449 2358
14 793 1402 2233 3597 5704 9282
85 212 375 598 963 1526 2484
15 846 1496 2383 3838 6086 9905
90 223 394 628 1012 1604 2610
16 899 1590 2533 4079 6468 10527
95 234 413 658 1061 1681 2736
17 952 1684 2682 4321 6851 11149
100 245 432 689 1109 1759 2863
18 1005 1778 2832 4562 7233 11771
110 266 471 750 1207 1914 3115
19 1058 1872 2982 4803 7615 12393
120 288 509 810 1305 2069 3368
20 1111 1966 3131 5044 7997 13015
130 309 547 871 1403 2225 3620
20.7 1149 2032 3236 5213 8265 13450
140 331 585 932 1501 2380 3873







150 352 623 993 1599 2535 4125







160 374 661 1053 1697 2690 4378







170 396 699 1114 1795 2845 4630







180 417 738 1175 1892 3000 4883







190 439 776 1236 1990 3156 5135







200 460 814 1296 2088 3311 5388







210 482 852 1357 2186 3466 5640







220 503 890 1418 2284 3621 5893







230 525 928 1479 2382 3776 6145







240 547 966 1539 2480 3931 6398







250 568 1005 1600 2577 4087 6650







260 590 1043 1661 2675 4242 6903







270 611 1081 1722 2773 4397 7156







280 633 1119 1782 2871 4552 7408







290 655 1157 1843 2969 4707 7661







300 676 1195 1904 3067 4863 7913







Set pressures below 15 PSI (1.03 Bar) are NON-Code.
Maximum back-pressure is 10% of set pressure or 50 PSI (3.45 Bar) whichever is less.
Lifting Device as required by the ASME, ASME Section VIII: UG136(3) Each pressure relief valve on air, water at the valve inlet that exceeds 140°F (60°C), excluding
over-pressure or relief events, or steam service shall have a substantial lifting device which when activated will release the seating force on the disc when the pressure
relief valve is subjected to a pressure of at least 75% of the set pressure of the valve.