Safety Relief Valves For Steam, Air, Gas And Vapors
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F-SSRV.qxd 4/11/08 2:18 PM Page 1 Safety Relief Valves For Steam, Air, Gas And Vapors w a t t s . c o m F-SSRV.qxd 4/11/08 2:18 PM Page 2 Contents Model Page Typical Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Fig. 31 - ASME Section I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Fig. 41 - ASME Section VIII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Fig. 41A - ASME Section VIII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Fig. 31/41/41A Dimensions/Weights/Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8 Fig. 31/41/41A Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Series 315/415 - ASME Section IV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Introduction Watts Safety Relief Valves offer economical safety with Watts quality for use in steam, air, gas and vapor applications. All our safety relief valves are manufactured to meet or exceed the performance and overprotection criteria established by ASME code section I, IV and VIII requirements. To accomplish this, all Watts Safety Relief Valves are 100% inspected and tested for set point, blowdown, and seat tightness by an ASME certified valve assembly and repair facility. Watts Safety Relief Valves feature a two-ring design that ensures sharp opening action and short blowdown, providing over-pressure protection with minimal loss of steam, gas, or vapor. Our valves have a top guided, full nozzle, high capacity design to minimize valve wear and provide longer service life. The cap/lifting lever design allows for easy manual testing and the optically flat lapped seating surfaces ensure maximum seat tightness. Watts Safety Relief Valves are available in both bronze and cast iron body construction in a range of sizes for a variety of applications as outlined in the following pages of this guide. We have also included saturated steam capacity charts that have been certified by the National Board of Boiler and Pressure Vessel Inspectors to assist you in selecting the proper relief valve for your application. How to Use Saturated Steam Capacities Charts This guide presents saturated steam capacity charts to help you determine the pounds per hour capacity of Watts Safety Relief Valves. It is important to note that the relief valve capacity must exceed the boiler's pound per hour capacity in ASME Section I boiler applications and must exceed the pound per hour capacity of the steam service valves in ASME Section VIII applications. For example, to size the Fig. 31 Safety Relief Valve, you need to know the set pressure and steam capacity in pounds per hour the valve must relieve. Assume a set point of 45psi and a boiler capacity of 9500 lbs/hr. Using Chart 1 below, locate the set pressure of 45psi in the left hand column. Read across the row until you find a capacity greater than 9500 lbs/hr, the capacity of the boiler. The first one you will see is 10,351. Read up the column to find the orifice size of the valve required to relieve enough capacity at 45psi set point. You will require a “M” orifice. Refer to the ordering information charts on page 9. Locate the valve size column and read down, you will find that a Watts 3x4 Figure 31 Safety Relief Valve satisfies the M orifice requirements. Chart 1 WATTS FIG. 31 ASME SECTION I SERIES VALVES SATURATED STEAM CAPACITIES (LBS/HR @ 90% RATING AND 3% OVERPRESSURE) Orifice Area D (in2) 0.1188 Set Press. psi 35 40 45 50 2 277 304 331 358 E 0.2116 F 0.3318 G 0.5424 H 0.8479 J 1.391 K 1.892 L 2.935 M 3.715 N 4.468 P 6.564 Q 11.365 R 16.475 494 542 589 637 774 849 924 999 1266 1388 1511 1633 1979 2171 2362 2553 3247 3561 3875 4189 4416 4843 5270 5697 6851 7513 8176 8838 8674 9512 10351 11190 10429 11437 12446 13455 15321 16803 18285 19766 26527 29093 31658 34224 38455 42174 45893 49612 F-SSRV.qxd 4/11/08 2:18 PM Page 3 Typical Installations Below are some of the typical safety relief valve installations.* * Consult with equipment manufacturer for actual piping arrangement. 3 F-SSRV.qxd 4/11/08 2:18 PM Page 4 Watts Bronze and Cast Iron Safety Relief Valves for steam boilers with pressures to 250psi at 406°F Fig. 31 - ASME Section I Applications Figure 31 is a top guide, high capacity, full nozzle safety relief valve available in bronze or cast iron for over pressure protection of steam boilers with operating pressures from 5 to 250psi. Features Unitized bonnet/base design, rugged construction and 2-ring control make the Figure 31 safety relief valve extremely dependable in terms of pop action, seat tightness and repeatability. The single unit cap and lifting lever permit manual valve opening (testing) with low required force on the lever. Size/Ratings Bronze valves are available in twelve sizes ranging from 1⁄2" x 3⁄4" to 21⁄2" x 21⁄2", connections are male NPT screwed inlet and female NPT screwed outlet. Cast iron valves are available in sixteen sizes ranging from 11⁄2" x 21⁄2" to 6" x 8". Rating is 250psi at 406°F saturated steam. WATTS Fig. 31 ASME Section I Series Valves Saturated Steam Capacities (lbs/hr @ 90% rating and 3% overpressure) Orifice Area D (in2) 0.1188 Set Press. psi 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 4 170 197 224 250 277 304 331 358 385 411 438 466 493 521 548 576 604 631 659 687 714 742 769 797 825 852 880 908 935 963 990 1018 1046 1073 1101 1128 1156 1184 1211 1239 1267 1294 1322 1349 1377 1405 1432 1460 E 0.2116 F 0.3318 G 0.5424 H 0.8479 J 1.391 K 1.892 L 2.935 M 3.715 N 4.468 P 6.564 Q 11.365 R 16.475 303 351 398 446 494 542 589 637 685 733 780 829 878 928 977 1026 1075 1124 1174 1223 1272 1321 1370 1420 1469 1518 1567 1616 1666 1715 1764 1813 1862 1912 1961 2010 2059 2108 2158 2207 2256 2305 2354 2404 2453 2502 2551 2600 475 550 625 700 774 849 924 999 1074 1149 1224 1300 1377 1455 1532 1609 1686 1763 1840 1917 1995 2072 2149 2226 2303 2380 2457 2535 2612 2689 2766 2843 2920 2997 3075 3152 3229 3306 3383 3460 3538 3615 3692 3769 3846 3923 4000 4078 776 899 1021 1144 1266 1388 1511 1633 1756 1878 2001 2126 2252 2378 2504 2630 2756 2882 3008 3134 3261 3387 3513 3639 3765 3891 4017 4143 4269 4396 4522 4648 4774 4900 5026 5152 5278 5404 5531 5657 5783 5909 6035 6161 6287 6413 6540 6666 1213 1405 1596 1788 1979 2171 2362 2553 2745 2936 3128 3323 3520 3717 3914 4111 4308 4506 4703 4900 1 5097 5294 5491 5688 5886 6083 6280 6477 6674 6871 7068 7266 7463 7660 7857 8054 8251 8448 8646 8843 9040 9237 9434 9631 9829 10026 10223 10420 1991 2305 2619 2933 3247 3561 3875 4189 4503 4817 5131 5451 5774 6098 6421 6745 7068 7392 7715 8038 8362 8685 9009 9332 9655 9979 10302 10626 10949 11273 11596 11919 12243 12566 12890 13213 13537 13860 14183 14507 14830 15154 15477 15800 16124 16447 16771 17094 2708 3135 3562 3989 4416 4843 5270 5697 6125 6552 6979 7414 7854 8294 8734 9174 9614 10054 10494 10934 11374 11813 12253 12693 13133 13573 1 14013 14453 14893 15333 15773 16212 16652 17092 17532 17972 18412 18852 19292 19732 20172 20612 21051 21491 21931 22371 22811 23251 4200 4863 5526 6188 6851 7513 8176 8838 9501 10163 10826 11502 12184 12866 13549 14231 14914 15596 16279 16961 17643 18326 19008 19691 20373 21055 21738 22420 23103 23785 24468 25150 25832 26515 27197 27880 28562 29244 29927 30609 31292 31974 32656 33339 34021 34704 35386 36069 5318 6157 6996 7835 8674 9512 10351 11190 12029 12868 13707 14562 15426 16290 17154 18018 18882 19746 20610 21474 22338 23202 24066 24930 25794 26658 27522 28386 29250 30114 30978 31842 32706 33570 34434 35298 36162 37026 37890 38754 39618 40482 41346 42210 43074 43938 44802 45666 6394 7403 8412 9420 10429 11437 12446 13455 14463 15472 16480 17509 18548 19587 20626 21665 22703 23742 24781 25820 26859 27898 28937 29975 31014 32053 33092 34131 35170 36208 37247 38286 39325 40364 41403 42442 43480 44519 45558 46597 47636 48675 49714 50752 51791 52830 53869 54908 9394 10876 12358 13839 15321 16803 18285 19766 21248 22730 24212 25723 27249 28775 30302 31828 33354 34880 36406 37932 39459 40985 42511 44037 45563 47090 48616 50142 51668 53194 54721 56247 57773 59299 60825 62351 63878 65404 66930 68456 69982 71509 73035 74561 76087 77613 79140 80666 16265 18831 21396 23962 26527 29093 31658 34224 36789 39355 41920 44537 47180 49822 52464 55107 57749 60392 63034 65677 68319 70962 73604 76247 78889 81532 84174 86817 89459 92101 94744 97386 100029 102671 105314 107956 110599 113241 115884 118526 121169 123811 126453 129096 131738 134381 137023 139666 23579 27298 31017 34736 38455 42174 45893 49612 53331 57050 60769 64562 68393 72223 76054 79884 83715 87546 91376 95207 99037 102868 106699 110529 114360 118190 122021 125851 129682 133513 137343 141174 145004 148835 152666 156496 160327 164157 167988 171818 175649 179480 183310 187141 190971 194802 198633 202463 F-SSRV.qxd 4/11/08 2:18 PM Page 5 Watts Bronze and Cast Iron Safety Relief Valves for saturated steam to 250psi at 406°F Fig. 41 - ASME Section VIII Steam Service Applications Figure 41 is a top guide, high capacity, full nozzle safety relief valve for over-pressure protection on unfired pressure vessels, steam pressure reducing valve stations and other steam service applications with operating pressures from 5 to 250psi. Features Unitized bonnet/base design, rugged construction and 2-ring control make the Figure 41 safety relief valve extremely dependable in terms of pop action, seat tightness and repeatability. The single unit cap and lifting lever permit manual valve opening (testing) with low required force on the lever. Size/Ratings Bronze valves are available in twelve sizes ranging from 1⁄2" x 3⁄4" to 21⁄2" x 21⁄2", connections are male NPT screwed inlet and female NPT screwed outlet. Cast iron valves are available in sixteen sizes ranging from 11⁄2" x 21⁄2" to 6" x 8". Rating is 250psi at 406°F saturated steam. WATTS Fig. 41 ASME Section VIII Series Valves Saturated Steam Capacities (lbs/hr @ 90% rating and 10% overpressure) Orifice Area (in2) Set Press. psi D 0.1188 E 0.2116 F 0.3318 G 0.5424 H 0.8479 J 1.391 K 1.892 L 2.935 M 3.715 N 4.468 P 6.564 Q 11.365 R 16.475 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 176 203 229 256 286 315 345 374 404 434 463 493 522 552 581 611 640 670 699 729 758 788 818 847 877 906 936 965 995 1024 1054 1083 1113 1143 1172 1202 1231 1261 1290 1320 1349 1379 1408 1438 1468 1497 1527 1556 313 361 409 456 509 562 614 667 720 772 825 877 930 983 1035 1088 1140 1193 1246 1298 1351 1404 1456 1509 1561 1614 1667 1719 1772 1825 1877 1930 1982 2035 2088 2140 2193 2246 2298 2351 2403 2456 2509 2561 2614 2667 2719 2772 491 566 641 716 798 881 963 1046 1128 1211 1293 1376 1458 1541 1623 1706 1788 1871 1953 2036 2118 2201 2283 2366 2448 2531 2614 2696 2779 2861 2944 3026 3109 3191 3274 3356 3439 3521 3604 3686 3769 3851 3934 4016 4099 4181 4264 4346 802 925 1047 1170 1305 1440 1575 1709 1844 1979 2114 2249 2384 2519 2654 2789 2923 3058 3193 3328 3463 3598 3733 3868 4003 4137 4272 4407 4542 4677 4812 4947 5082 5217 5352 5486 5621 5756 5891 6026 6161 6296 6431 6566 6700 6835 6970 7105 1254 1445 1637 1829 2040 2251 2461 2672 2883 3094 3305, 3516 3727 3937 4148 4359 4570 4781 4992 5203 5414 5624 5835 6046 6257 6468 6679 6890 7100 7311 7522 7733 7944 8155 8366 8577 8787 8998 9209 9420 9631 9842 10053 10263 10474 10685 10896 11107 2057 2371 2686 3000 3346 3692 4038 4384 4730 5076 5422 5768 6114 6460 6805 7151 7497 7843 8189 8535 8881 9227 9573 9919 10265 10611 10957 11303 11648 11994 12340 12686 13032 13378 13724 14070 14416 14762 15108 15454 15800 16146 16492 16837 17183 17529 17875 18221 2798 3225 3653 4081 4551 5022 5492 5963 6433 6904 7374 7845 8316 8786 9257 9727 10198 10668 11139 11609 12080 12550 13021 13491 13962 14432 14903 15373 15844 16314 16785 17256 17726 18197 18667 19138 19608 20079 20549 21020 21490 21961 22431 22902 23372 23843 24313 24784 4340 5003 5667 6330 7060 7790 8520 9250 9980 10710 11440 12170 12900 13630 14359 15089 15819 16549 17279 18009 18739 19469 20199 20929 21659 22388 23118 23848 24578 25308 26038 26768 27498 28228 28958 29688 30418 31147 31877 32607 33337 34067 34797 35527 36257 36987 37717 38447 5494 6335 7175 8015 8939 9863 10787 11711 12636 13560 14484 15408 16332 17256 18180 19105 20029 20953 21877 22801 23725 24649 25574 26498 27422 28346 29270 30194 31118 32043 32967 33891 34815 35739 36663 37587 38512 39436 40360 41284 42208 43132 44057 44981 45905 46829 47753 48677 6606 7617 8627 9637 10748 11859 12970 14081 15193 16304 17415 18526 19637 20748 21860 22971 24082 25193 26304 27415 28527 29638 30749 31860 32971 34082 35194 36305 37416 38527 39638 40749 41861 42972 44083 45194 46305 47416 48527 49639 50750 51861 52972 54083 55194 56306 57417 58528 9706 11190 12674 14158 15790 17422 19055 20687 22320 23952 25585 27217 28849 30482 32114 33747 35379 37012 38644 40276 41909 43541 45174 46806 48438 50071 51703 53336 54968 56601 58233 59865 61498 63130 64763 66395 68028 69660 71292 72925 74557 76190 77822 79455 81087 82719 84352 85984 16804 19374 21943 24513 27339 30165 32992 35818 38645 41471 44297 47124 49950 52777 55603 58429 61256 64082 66909 69735 72561 75388 78214 81041 83867 86693 89520 92346 95173 97999 100825 103652 106478 109305 112131 114957 117784 120610 123437 126263 129089 131916 134742 137569 140395 143221 146048 148874 24360 28085 31809 35534 39631 43729 47826 51923 56020 60117 6U-1-5 68312 72409 76506 80604 84701 88798 92895 96992 101090 105187 109284 113381 117479 121576 1256731 129770 133868 137965 142062 146159 150256 154354 158451 162548 166645 170743 174840 178937 183034 187131 191229 195326 199423 203520 207618 211715 215812 5 F-SSRV.qxd 4/11/08 2:18 PM Page 6 Watts Bronze and Cast Iron Safety Relief Valves for air, gas and vapors to 250psi at 406°F Fig. 41A - ASME Section VIII Applications Figure 41A is a heavy duty, high capacity safety relief valve for compressors, intercoolers, aftercoolers and receivers, air makeup units, gas burners, pneumatic conveying/elevating equipment, dryers and other pressure vessels and piping, handling air, gases and vapors to 250psi with temperatures to 406°F. Features Unitized bonnet/base design, rugged construction and 2-ring control make the 41A safety relief valve extremely dependable in terms of pop action, seat tightness and repeatability. The single unit cap and lifting lever permit manual valve opening (testing) with low required force on the lever. Size/Ratings Bronze valves are available in twelve sizes ranging from 1⁄2" x 3⁄4" to 21⁄2" x 21⁄2", connections are male NPT screwed inlet and female NPT screwed outlet. Cast iron valves are available in sixteen sizes ranging from 11⁄2" x 21⁄2" to 6" x 8". Rating is 250psi at 406°F. WATTS Fig. 41A ASME Section VIII Series Valves Saturated Steam Capacities (SCFM @ 90% rating and 10% overpressure) Orifice Area (in2) Set Press. psi D 0.1188 E 0.2116 F 0.3318 G 0.5424 H 0.8479 J 1.391 K 1.892 L 2.935 M 3.715 N 4.468 P 6.564 Q 11.365 R 16.475 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 63 72 82 91 102 112 123 133 144 154 165 175 186 196 207 217 228 238 249 259 270 280 291 302 312 323 333 344 354 365 375 386 396 407 417 428 438 449 459 470 480 491 501 512 522 533 543 554 111 128 145 162 181 200 219 237 256 275 294 312 331 350 368 387 406 425 443 462 481 500 518 537 556 575 593 612 631 649 668 687 706 724 743 762 781 799 818 837 855 874 893 912 930 949 968 987 175 201 228 255 284 313 343 372 402 431 460 490 519 548 578 607 637 666 695 725 754 783 813 842 872 901 930 960 989 1018 1048 1077 1106 1136 1165 1195 1224 1253 1283 1312 1341 1371 1400 1430 1459 1488 1518 1547 285 329 373 416 464 512 560 608 656 704 753 801 849 897 945 993 1041 1089 1137 1185 1233 1281 1329 1377 1425 1473 1521 1569 1617 1665 1713 1761 1809 1857 1905 1953 2001 2049 2097 2145 2193 2241 2289 2337 2385 2433 2481 2529 446 514 583 651 726 801 876 951 1026 1101 1176 1251 1326 1402 1477 1552 1627 1702 1777 1852 1927 2002 2077 2152 2227 2302 2377 2452 2527 2602 2677 2753 2828 2903 2978 3053 3128 3203 3278 3353 3428 3503 3578 3653 3728 3803 3878 3953 732 844 956 1068 1191 1314 1437 1560 1684 1807 1930 2053 2176 2299 2422 2545 2669 2792 2915 3038 3161 3284 3407 3531 3654 3777 3900 4023 4146 4269 4392 4516 4639 4762 4885 5008 5131 5254 5378 5501 5624 5747 5870 5993 6116 6239 6363 6486 996 1148 1300 1453 1620 1787 1955 2122 2290 2457 2625 2792 2960 3127 3295 3462 3630 3797 3965 4132 4300 4467 4635 4802 4970 5137 5305 5472 5640 5807 5974 6142 6309 6477 6644 6812 6979 7147 7314 7482 7649 7817 7984 8152 8319 8487 8654 8822 1545 1781 2017 2253 2513 2773 3033 3292 3552 3812 4072 4332 4592 4851 5111 5371 5631 5891 6150 6410 6670 6930 7190 7449 7709 7969 8229 8489 8748 9008 9268 9528 9788 10047 10307 10567 10827 11087 11346 11606 11866 12126 12386 12646 12905 13165 13425 13685 1956 2255 2554 2853 3182 3511 3840 4169 4498 4826 5155 5484 5813 6142 6471 6800 7129 7458 7787 8116 8445 8774 9103 9432 9761 10090 10418 10747 11076 11405 11734 12063 12392 12721 13050 13379 13708 14037 14366 14695 15024 15353 15682 16010 16339 16668 16997 17326 2351 2711 3071 3430 3826 4221 4617 5012 5408 5803 6199 6594 6990 7385 7781 8176 8572 8967 9363 9758 10154 10549 10945 11340 11736 12131 12527 12922 13318 13713 14109 14504 14900 15295 15691 16086 16482 16877 17273 17668 18064 18459 18855 19251 19646 20042 20437 20833 3455 3983 4511 5039 5620 6201 6782 7363 7945 8526 9107 9688 10269 10850 11431 12012 12593 13174 13755 14336 14917 15498 16079 16660 17241 17822 18403 18984 19565 20147 20728 21309 21890 22471 23052 23633 24214 24795 25376 25957 26538 27119 27700 28281 28862 29443 30024 30605 5981 6896 7810 8725 9731 10737 11743 12749 13755 14761 15767 16773 17779 18785 19791 20797 21804 22810 23816 24822 25828 26834 27840 28846 29852 30858 31864 32870 33876 34882 35888 36894 37900 38906 39912 40918 41924 42930 43936 44942 45948 46954 47960 48966 49972 50979 51985 52991 8671 9996 11322 12648 14106 15565 17023 18482 19940 21398 22857 24315 25773 27232 28690 30149 31607 33065 34524 35982 37440 38899 40357 41816 43274 44732 46191 47649 49107 50566 52024 53483 54941 56399 57858 59316 60774 62233 63691 65150 66608 68066 69525 70983 72441 73900 75358 76817 6 F-SSRV.qxd 4/11/08 2:18 PM Page 7 Watts Bronze Safety Relief Valves Figure 31/41/41A Dimensions/Weights/Materials MATERIALS Valve Size Orifice Size Inlet x Outlet (in.) 12 ⁄ x 3⁄4 3⁄4 x 3⁄4 3⁄4 x 1 1x1 1 x 11⁄4 11⁄4 x 11⁄4 11⁄4 x 11⁄2 11⁄2 x 11⁄2 11⁄2 x 2 2x2 2 x 21⁄2 21⁄2 x 21⁄2 D D E E F F G G H H J J Ref. No. Part Name Material 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Base Base Ring Base Ring Set Screw Disc Guide and Ring Guide Ring Set Screw Spindle Spring Spring Washer Bonnet Adjusting Bolt Adjusting Bolt Locknut Lifting Cap Zinc Lifting Cap Pin Spindle Nut Spindle Nut Locknut Seal and Wire Bronze Bronze Brass Bronze Bronze Brass Steel Plated Steel Steel Bronze Brass Plated Steel Alloy/Steel Plated Steel Plated Steel Plated Steel Stainless Steel Dimensions (in.) Weight A B C D* E lb. 69⁄16 69⁄16 71⁄8 71⁄8 9 9 911⁄16 911⁄16 121⁄8 121⁄8 135⁄16 135⁄16 13⁄8 13⁄8 15⁄8 15⁄8 17⁄8 17⁄8 21⁄8 21⁄8 29⁄16 29⁄16 31⁄8 31⁄8 21⁄4 21⁄4 25⁄16 25⁄16 213⁄16 213⁄16 3 3 31⁄2 31⁄2 33⁄4 33⁄4 13⁄8 13⁄8 13⁄8 13⁄8 113⁄16 113⁄16 113⁄16 113⁄16 23⁄4 23⁄4 23⁄4 23⁄4 11⁄8 11⁄4 11⁄4 11⁄2 11⁄2 13⁄4 17⁄8 21⁄16 21⁄4 29⁄16 23⁄4 3 2 2.25 2.5 2.75 4 4.25 7 7.25 13.5 13.75 17.5 17.75 *Add 1⁄2" to D dimension when lever is pulled out to manually operate the valve. 7 F-SSRV.qxd 4/11/08 2:18 PM Page 8 Watts Cast Iron Safety Relief Valves Figure 31/41/41A Dimensions/Weights/Materials MATERIALS Valve Size Orifice Size Inlet & Outlet (in.) 11⁄2-250# x 21⁄2 NPT 11⁄2 NPT x 21⁄2 NPT 2-250# x 3 NPT 2 NPT x 3 NPT 21⁄2-250# x 3 NPT 21⁄2-250# x 4 NPT 21⁄2 NPT x 4 NPT 3-250# x 3 NPT 3-250# x 4 NPT 3-NPT# x 4 NPT 4-250# x 6-125# 6-250# x 8-125# 8 J J J,K K K L L K L,M M N,P Q,R Ref. No. Part Name Material 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Body Bonnet Nozzle Nozzle Ring Disc Guide Ring Adjusting Bolt Adjusting Bolt Locknut Nozzle Ring Set Screw Guide Ring Set Screw Spindle Spindle Nut Spindle Nut Lock nut Lifting Cap Lifting Cap Pins Pivot Post Post Pin Spring Washer Spring Stud Stud Nut Name Plate Name Plate Screws Lead Seal Seal Wire Lifting Lever Clevis Pin Cotter Pin Liftcap Lockscrew ASTM A126-B (Grey Iron) ASTM A126-B (Grey Iron) ASTM B26 (Bronze) ASTM B584-844 (Bronze) ASTM B62 (Bronze) ASTM B584-844 (Bronze) ASTM B16 (Brass) Steel (Zn Plate) Brass Brass ASTM A108 Grade 1212 ASTM A108 Grade 1212 Steel AISI (Zn Plate) A126-B Cast Iron Steel 1020 (Zn Plate) Steel AISI Steel AISI 1070 (Zn Plate) Steel AISI 1212 Steel (Zn Plate) Steel ASTM A193 B7 Steel ASTM A194 2H SST AISI 304 SST 18-8 Lead Commercial SST AISI 304 A126-B Cast Iron Steel (Zn) Steel Steel Dimensions (in.) Weight A B C D E lb. 15 141⁄2 153⁄4 153⁄4 153⁄4 23 23 153⁄4 23 231⁄8 281⁄2 455⁄16 31⁄4 31⁄4 4 4 4 51⁄8 51⁄8 4 51⁄8 51⁄8 71⁄4 10 41⁄4 41⁄4 45⁄8 45⁄8 43⁄4 51⁄2 51⁄2 5 51⁄2 55⁄8 63⁄4 91⁄4 3 3 31⁄2 31⁄2 31⁄2 6 6 31⁄2 6 6 6 101⁄2 – 23⁄4 – 35⁄8 – – 41⁄2 – – 41⁄2 – – 24 20 42 36 45 105 97 48 107 99 212 675 F-SSRV.qxd 4/11/08 2:18 PM Page 9 How to Order Watts Safety Relief Valves You must consider five parameters in order to select the correct valve for your application. 1) What is the valve size needed? • Nominal pipe size (Inlet x Outlet) 2) What is the application? • ASME Section IV for Low-Pressure Steam Service and Equipment up to 15psi. Use Series 315/415 or Figure 10. (See pages 10 and 11 for more information.) • ASME Section I for Steam Boilers up to 250psi. Use Figure 31. • ASME Section VIII for Steam Service and Equipment up to 250psi. Use Figure 41. • ASME Section VIII for air, gas, and vapors up to 250psi. Use Figure 41A. 3) What is the set pressure in psi? • Confirm set pressure with project engineer or boiler plant personnel. • Watts valves perform in the 5-250psi range. 4) What lbs/hr capacity must the valve relieve? • Set pressure and orifice size determine valve capacity. • Orifice size is designated by the letter D through R and is determined by ASME standards. (Use the saturated steam capacity charts provided in this guide to determine the orifice size.) 5) What end connections are required? • NPT x NPT • Flange x NPT • Flange x Flange Ordering Information Figure 31/41/41A Bronze Safety Relief Valves Ordering Code Valve Size Inlet 0390700 0390701 0390702 0390703 0390704 0390705 0390706 0390707 0390708 0390709 0390710 0390711 Pipe Connection Orifice 12 ⁄" 3⁄4" 3⁄4" 1" 1" 11⁄4" 11⁄4" 11⁄2" 11⁄2" 2" 2" 21⁄2" Outlet 34 D D E E F F G G H H J J ⁄" 3⁄4" 1" 1" 11⁄4" 11⁄4" 11⁄2" 11⁄2" 2" 2" 21⁄2" 21⁄2" NPT X Outlet NPT x NPT NPT x NPT NPT x NPT NPT x NPT NPT x NPT NPT x NPT NPT x NPT NPT x NPT NPT x NPT NPT x NPT NPT x NPT NPT x NPT Figure 31/41/41A Cast Iron Safety Relief Valves Ordering Code 0390712 0390713 0390714 0390715 0390716 0390717 0390718 0390719 0390720 0390721 0390722 0390723 0390724 0390725 0390726 0390727 Valve Size Pipe Connection Inlet Orifice Outlet NPT X Outlet 11⁄2" 11⁄2" 2" 2" 2" 21⁄2" 21⁄2" 21⁄2" 3" 3" 3" 3" 4" 4" 6" 6" J J J K K K L L K L M M N P Q R 21⁄2" 21⁄2" 3" 3" 3" 3" 4" 4" 3" 4" 4" 4" 6" 6" 8" 8" 250 FLG x NPT NPT x NPT 250 FLG x NPT 250 FLG x NPT NPT x NPT 250 FLG x NPT 250 FLG x NPT NPT x NPT 250 FLG x NPT 250 FLG x NPT 250 FLG x NPT NPT x NPT 250 FLG/125 FLG 250 FLG/125 FLG 250 FLG/125 FLG 250 FLG/125 FLG 9 F-SSRV.qxd 4/11/08 2:18 PM Page 10 Watts Bronze Safety Relief Valves for steam heating boilers with operating pressures to 15psi Series 315/415 ASME Section IV Applications Series 315/415 are ASME Section IV safety relief valves designed for industrial and commercial low-pressure steam equipment. Standard pressure settings for saturated steam service are 5 thru 15psi. Features Series 315 valves feature a bronze body and stainless steel spring. A top guided stem and non-stick Teflon® disc-to-metal seat assure positive shutoff. These valves are also available in lower settings, such as 8psi for pressure cooker and steam cleaning equipment requirements. Series 415 valves feature a forged brass body for the 3⁄4" size and a bronze body for the 1", 11⁄4", and 11⁄2" valves. All sizes of the Series 415 relief valves feature a stainless steel spring for accurate set point relieving. Series 415 valves feature tight shutoff, sharp popping and closing action with a high degree of repeatability. The simple design means dependability and low cost. Series 315 Size/Ratings Series 315 and 415 are capacity certified by the National Board at 15psi in accordance with ASME Boiler and Pressure Vessel Code Section IV. Series 315/415 are available in 4 sizes ranging from 3⁄4" x 3⁄4" to 11⁄2" x 2". Connections are male NPT screwed inlet and female NPT screwed outlet. The body is rated at 15psi saturated steam temperature 250°F. Dimensions/Weights Model No. Ordering Code* B D E 10 315-M1 415-M1 415-M1 415 415 0342615 0346045 0346044 0364195 0364200 Size ASME Steam (in.) Discharge Capacity lbs./hr. @ 15psi in. mm in. mm in. mm lbs. kg. 375 450 643 1265 1860 211⁄16 213⁄16 31⁄8 43⁄4 57⁄16 68 71 78 121 138 13⁄8 15⁄16 111⁄16 23⁄8 25⁄8 35 33 43 60 67 11⁄4 11⁄4 15⁄8 21⁄8 25⁄16 32 32 41 54 59 .55 .70 .91 2.00 3.00 .24 .31 .41 .91 1.36 34 ⁄ x 3⁄4 3⁄4 x 3⁄4 1x1 11⁄4 x 11⁄2 11⁄2 x 2 Dimensions B Weight D E *Ordering codes are for standard 15psi settings. Consult factory for ordering codes for non-standard pressure settings. F-SSRV.qxd 4/11/08 2:18 PM Page 11 E-mail HEADQUARTERS: Watts Regulator Company 815 Chestnut St., North Andover, MA 01845-6098 U.S.A. 978 688-1811 watts@wattswater.com North East Edwards, Platt & Deely, Inc. Edwards, Platt & Deely, Inc. Vernon Bitzer Associates, Inc. W. P. Haney Company, Inc. 277 Royal Ave., Hawthorne, NJ 07506 368 Wyandanch Ave., North Babylon, NY 11703 980 Thomas Drive, Warminster, PA 18974 51 Norfolk Ave., South Easton, MA 02375 973 427-2898 631 253-0600 215 443-7500 508 238-2030 p044@watts.com p073@watts.com P009@watts.com p088@watts.com Mid Atlantic Disney McLane & Associates J. B. O’Connor Company, Inc. RMI The Joyce Agency, Inc. WMS Sales, Inc. (Main office) 428 McGregor Ave., Cincinnati, OH 45206 P.O. Box 12927, Pittsburgh, PA 15241 Glenfield Bus. Ctr., 2533 Mechanicsville Tpk., Richmond, VA 23223 8442 Alban Rd., Springfield, VA 22150 9580 County Rd., Clarence Center, NY 14032 800 542-1682 724 745-5300 804 643-7355 703 866-3111 716 741-9575 p017@watts.com p047@watts.com rmi@ricmrk.com p069@watts.com p091@watts.com South East Billingsley & Associates, Inc. Billingsley & Associates, Inc. Francisco J. Ortiz & Co., Inc. Mid-America Marketing, Inc. Mid-America Marketing, Inc. Mid-America Marketing, Inc. Smith & Stevenson Co., Inc. Harry Warren, Inc. Watts Georgia 2728 Crestview Ave., Kenner, LA 70062-4829 478 Cheyenne Lane, Madison, MS 39110 Charlyn Industrial Pk., Road 190 KM1.9 - Lot #8, Carolina, Puerto Rico 00983 203 Industrial Drive, Birmingham, AL 35211 1364 Foster Avenue, Nashville, TN 37210 5466 Old Hwy. 78, Memphis, TN 38118 4935 Chastain Ave., Charlotte, NC 28217 1400 North Orange Blossom Trail, Orlando, FL 32804 2861-B Bankers Industrial Drive, Atlanta, GA 30360 504 602-8100 601 856-7565 787 769-0085 205 879-3469 615 259-9944 901 795-0045 704 525-3388 407 841-9237 770 209-3310 p013@watts.com chkenny@billingsley.com p029@watts.com p032@watts.com john@midamericamktg.com sales@midamericamktg.com p003@watts.com p071@watts.com p059@watts.com North Central Dave Watson Associates Mid-Continent Marketing Services Ltd. Soderholm & Associates, Inc. Stickler & Associates 1325 West Beecher, Adrian, MI 49221 1275 Lakeside Drive, Romeoville, IL 60446 7150 143rd Ave. N.W., Anoka, MN 55303 203 S. Curtis Road, Milwaukee, WI 53214 517 263-8988 630 953-1211 763 427-9635 414 771-0400 p085@watts.com p072@watts.com company@soderholmrep.com sales@sticklerassociates.com South Central Hugh M. Cunningham, Inc. Sandia Group, Inc. Mack McClain & Associates, Inc. Mack McClain & Associates, Inc. Mack McClain & Associates, Inc. OK! Sales, Inc. 13755 Benchmark, Dallas, TX 75234 3167 San Mateo #308, Albuquerque, NM 87110 4407 Meramec Bottom, Suite G, St. Louis, MO 63129 1450 NE 69th Place, Ste. 56 Ankeny, IA 50021 15090 West 116th St., Olathe, KS 66062 214 NE 12th. St., Ste A, Moore, OK 73160 972 888-3808 800 339-0191 314 894-8188 515 288-0184 913 339-6677 405 794-5200 p031@watts.com p031@watts.com p045@watts.com p049@watts.com p083@watts.com oksales@coxinet.net Delco Sales, Inc. Delco Sales, Inc. Fanning & Associates, Inc. Hollabaugh Brothers & Associates Hollabaugh Brothers & Associates P I R Sales, Inc. Preferred Sales R. E. Fitzpatrick Sales, Inc. 1930 Raymer Ave., Fullerton, CA 92833 111 Sand Island Access Rd., Unit I-4, Honolulu, HI 96819 6765 Franklin St., Denver, CO 80229-7111 6915 South 194th St., Kent, WA 98032 3028 S.E. 17th Ave., Portland, OR 97202 3050 North San Marcos Place, Chandler, AZ 85225 30852 Huntwood Ave., Hayward, CA 94544 4109 West Nike Dr. (8250 South), West Jordan, UT 84088 714 888-2444 808 842-7900 303 289-4191 253 867-5040 503 238-0313 480 892-6000 510 487-9755 801 282-0700 sales@delcosales.com p021@watts.com sales@fanningandassociates.com p001@watts.com p006@watts.com sales@pirsales.com p094@watts.com p007@watts.com Watts Water Technologies (Canada) Inc. Con-Cur West Marketing, Inc. D.C. Sales Ltd. D.C. Sales Ltd. GTA Sales Team. Hydro-Mechanical Sales, Ltd. Hydro-Mechanical Sales, Ltd. 905 332-4090 604 540-5088 403 253-6808 780 496-9495 888 208-8927 902 443-2274 info@wattscanada.ca dconte@concurwest.com barry.graham@dcsalesltd.com barry.graham@dcsalesltd.com gtasales@wattscanada.ca jeff@hydromechanical.ca 506 859-1107 709 579-5771 514 328-6645 418 873-2500 204 775-8194 705 693-2715 mark@hyromechnical.ca jds@nf.sympatico.ca info@ent-lajoie.com strudel@ent-lajoie.com marwin@mts.net normec@sympatico.ca RAM Mechanical Marketing Inc. RAM Mechanical Marketing Inc. Walmar Mechanical Sales 5435 North Service Road, Burlington, Ontario L7L 5H7 71B Clipper Street, Coquitlam, British Columbia V3K 6X2 #13-6130 4th St. S.E., Calgary, Alberta T2H 2B6 16726 111 Ave, Edmonton, Alberta T5M 2S6 Greater Toronto Area 3700 Joseph Howe Drive, Suite 1, Halifax, Nova Scotia B3L 4H7 P.O. Box 1445 (Mailing), 297 Collishaw St., Suite 7 (shipping) Moncton, New Brunswick E1C 9R2 4 Lancaster Street, St. John’s, Newfoundland A1A 5P7 6221 Marivaux, St-Leonard, QC H1P 3H6 23 du Buisson, Pont Rouge, QC G3H 1X9 1333 Clifton St., Winnipeg, Manitoba R3E 2V1 P.O. Box 280 (mailing) 163 Pine St. (shipping), Garson, Ontario P3L 1S6 P.O. Box 28136 (mailing), 1885 Blue Heron Dr., #4, London, Ontario N6H 5L9 905 Winnipeg Street, Regina, Saskatchewan S4R 1J1 510 Ave M South, Saskatoon, Saskatchewan S7M 2K9 24 Gurdwara Rd., Nepean, Ontario K2E 8B5 519 471-9382 306 525-1986 306 244-6622 613 225-9774 sales@palserent.com ram@accesscomm.ca info@rammarketing.ca chrisbrown@walmar.net EXPORT Hdqtrs.: Watts Regulator Co. 815 Chestnut St., North Andover, MA 01845-6098 U.S.A. Canada Telephone Western For Technical Assistance Call Your Authorized Watts Representative. 1012 J.D.S. Sales Ltd. Les Ent. Roland Lajoie Les Ent. Roland Lajoie Mar-Win Agencies, Ltd. Northern Mechanical Sales Palser Enterprises, Ltd. A Watts Water Technologies Company F-SSRV 0815 Telephone E-mail 978 688-1811 watts@wattswater.com USA: No. Andover, MA • Tel. (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com Canada: Burlington, ONT. • (905) 332-4090 • Fax: (905) 332-7068 • www.wattscanada.ca © 2010 Watts
