gb swing check valve
nominal diameter: dn50 ~ 800 mm
nominal pressure: pn1.6 ~ 16.0mpa
operating temperature: -196 ℃ ~ 550 ℃
main material: carbon steel, stainless steel
suitable medium: water, steam, oil, nitric acid, acetic
design and manufacture: gb12236
structural length: gb12221
connecting flange: jb / t79-1994
test and inspection: jb / t9092-1999
national standard swing check valve uses and features
h44h / w swing check valve is designed and manufactured in strict accordance with gb12236 standard. the pin shaft is connected with the valve flap with built-in structure, excellent performance and more reliable sealing. products are widely used in petroleum, chemical, pharmaceutical, power industry and other conditions of the pipeline.
national standard swing check valve main performance specifications
test pressure | nominal pressure (mpa) | ||||
1.6 | 2.5 | 4.0 | 6.4 | 10.0 | |
shell test | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 |
seal test | 1.8 | 2.8 | 4.4 | 7.1 | 11.0 |
body material | wcb (c) | cf8 (p) | cf 8m (r) | wc6 | wc9 |
operating temperature | ≤ 425 | ≤ 100 | ≤ 100 | ≤ 550 | ≤ 550 |
suitable media | water, steam, oil | nitric acids | acetic acid | steam | steam |
gb qi kai check valve implementation of standards
design and manufacture: gb12236
structure length: gb12221
connecting flange: jb / t79-1994
test and inspection: jb / t9092-1999
gb qi kai check valve main connection and dimensions and weight
pn |
dn | main connection size (mm) | h44 dimensions |
weight (kg) |
||||||
mm | l | d | d1 | d2 | b | f | z-φd | h | ||
2.0mpa |
50 | 203 | 152 | 120.5 | 92 | 16 | 1.6 | 4-19 | 165 | 17 |
65 | 216 | 178 | 139.5 | 105 | 17.5 | 1.6 | 4-19 | 175 | 25 | |
80 | 241 | 190 | 152.5 | 127 | 19.5 | 1.6 | 4-19 | 190 | 29 | |
100 | 292 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 215 | 50 | |
125 | 330 | 254 | 216 | 186 | 24 | 1.6 | 8-22 | 245 | 75 | |
150 | 356 | 279 | 241.5 | 216 | 25.5 | 1.6 | 8-22 | 265 | 85 | |
200 | 495 | 343 | 298.5 | 270 | 29 | 1.6 | 8-22 | 320 | 150 | |
250 | 622 | 406 | 362 | 324 | 30.5 | 1.6 | 12-25 | 365 | 240 | |
300 | 698 | 483 | 432 | 381 | 32 | 1.6 | 12-25 | 415 | 350 | |
350 | 787 | 533 | 476 | 413 | 35 | 1.6 | 12-29 | 460 | 460 | |
400 | 864 | 597 | 540 | 470 | 37 | 1.6 | 16-29 | 495 | 580 | |
500 | 978 | 698 | 635 | 584 | 43 | 1.6 | 20-32 | 590 | 840 | |
600 | 1295 | 813 | 749.5 | 692 | 48 | 1.6 | 20-35 | 650 | 1140 | |
700 | 1448 | 927 | 863.5 | 800 | 71.5 | 1.6 | 28-35 |
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5.0mpa |
50 | 267 | 165 | 127 | 92 | 22.5 | 1.6 | 8-19 | 190 | 28 |
65 | 292 | 190 | 149 | 105 | 25.5 | 1.6 | 8-22 | 205 | 33 | |
80 | 318 | 210 | 168 | 127 | 28 5 | 1.6 | 8-22 | 220 | 45 | |
100 | 356 | 254 | 200 | 157 | 32 | 1.6 | 8-22 | 245 | 70 | |
125 | 400 | 279 | 235 | 186 | 35 | 1.6 | 8-22 | 275 | 110 | |
150 | 444 | 318 | 270 | 216 | 36.5 | 1.6 | 12-22 | 295 | 150 | |
200 | 533 | 381 | 330 | 270 | 41.5 | 1.6 | 12.25 | 330 | 230 | |
250 | 622 | 444 | 387.5 | 324 | 48 | 1.6 | 16-29 | 420 | 390 | |
300 | 711 | 521 | 451 | 381 | 51 | 1.6 | 16-32 | 480 | 520 | |
350 | 838 | 584 | 514.5 | 413 | 54 | 1.6 | 20-32 | 535 | 710 | |
400 | 864 | 648 | 571.5 | 470 | 57.5 | 1.6 | 20-35 | 585 | 890 | |
500 | 1016 | 775 | 686 | 584.5 | 63.5 | 1.6 | 24-35 | 685 | 1360 | |
600 | 1364 | 914.5 | 813 | 692.5 | 70 | 1.6 | 24-41 | 785 | 2040 | |
10.0mpa | 50 | 292 | 165 | 127 | 92 | 26 | 6.4 | 8-19 | 210 | 32 |
65 | 330 | 190 | 149 | 100 | 29 | 6.4 | 8-22 | 230 | 42 | |
80 | 356 | 210 | 168 | 127 | 32 | 6.4 | 8-22 | 255 | 60 | |
100 | 432 | 273 | 216 | 157 | 38 | 6.4 | 8-25 | 295 | 95 | |
125 | 508 | 330 | 266.5 | 186 | 45 | 6.4 | 8-29 | 310 | 120 | |
150 | 559 | 355.5 | 292 | 216 | 47.5 | 6.4 | 12-29 | 365 | 220 | |
200 | 660 | 419.5 | 349 | 270 | 56 | 6.4 | 12-32 | 420 | 390 | |
250 | 787 | 508 | 432 | 324 | 63.5 | 6.4 | 16-35 | 505 | 630 | |
300 | 838 | 559 | 489 | 381 | 66.5 | 6.4 | 20-35 | 545 | 870 | |
350 | 889 | 603.5 | 527 | 413 | 710 | 6.4 | 20-38 | 600 | 940 | |
400 | 991 | 686 | 603 | 470 | 76.5 | 6.4 | 20-41 | 650 | 1100 |