Model MSS SP-71 - Iron Check Valves- Brochure

39 DESIGN FEATURES: • Seat faces lapped for smooth finish and superior sealing. • Swivel disc for improved seat alignment and longer life. • Each valve is shell and seat pressure tested per industry standard MSS SP-71. • Check valve are suitable for service in horizontal line with cap vertical or in a vertical line with flow upward.Design Specifications Item Applicable Specification Wall thickness ASME B16.1 Pressure - temperature ratings MSS SP-71 General valve design MSS SP-71 Type I End to End dimensions ASME B16.10 Flange design ASME B16.1 Materials ASTM (1) For sizes 2” and 3”, the disc is solid A351 Gr. CF8M for figure 559P. MSS SP-71 SWING CHECK VALVES BOLTED BONNET, FLANGED ENDS 2 TO 24” (50 TO 600 mm) CLASS 125 CAST IRON OR 3% NICKEL IRON Class Fig. No. 559 1259 559P 125 Trim Bronze Iron T316 SS STANDARD MATERIALS FIGURE NUMBER 559 1259 559P CLASS 125 125 125 PART MATERIALS Body A126-B 3% Nickel Cap A126-B 3% Nickel Disc A126-B or A536 3% Nickel (1) Disc Seat Ring B62 - A351 Gr. CF8M (1) Seat Ring B62 A536 A351 Gr. CF8M Gasket Non-Asbestos Carrier A536 3% Nickel Carrier Pin B16 A276-410 A276-304 Disc Nut A307-A T304 SS Split Pin T304 SS T410 SS T304 SS Washer Steel T304 SS Body / Cap Stud A307-A Body / Cap Nut A563-A Side Plug B16 A276-410 A276-304 nhammersmithTypewritten TextPowell Valves2503 Spring Grove Ave.Cincinnati, OH 45214Phone: 513-852-2000Fax: 513-852-299740 SWING CHECK VALVE DIMENSIONS CLASS 125 B = Center to Top WT = Weight CV = Flow coefficient SIZE FIG 559, 1259, & 559P in A B D WT lb CV mm kg 2 8.00 4.7 2.00 25 45 50 203 118 50 11 2½ 8.50 5.4 2.50 36 75 65 216 136 64 16 3 9.50 5.8 3.00 46 110 80 241 147 75 21 4 11.50 6.7 3.94 81 210 100 292 169 100 37 5 13.00 7.8 4.94 115 345 125 330 198 125 52 6 14.00 8.5 5.94 150 530 150 356 215 150 68 8 19.50 10.4 7.94 253 1010 200 495 264 200 115 10 24.50 11.9 9.88 442 1580 250 622 303 250 200 12 27.50 13.5 12.00 638 2460 300 699 343 305 289 14 31.00 15.5 14.00 792 3340 350 787 394 356 359 16 36.00 17.6 16.00 1020 4360 400 914 448 406 463 18 36.00 19.3 18.00 1304 5980 450 914 490 457 591 20 40.00 22.3 20.00 1771 7400 500 1016 565 508 803 24 48.00 24.9 24.00 2630 10600 600 1219 632 610 1193