H44H旋启式止回阀,铸铁旋启式止回阀,不锈钢旋启式止回阀
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性能规范 | 公称压力PN | 2.5 | 4.0 | 6.4 | 16 | MPa | | 壳体试验压力PT | 3.75 | 6.0 | 9.6 | 24 | | 高压密封试验压力 | 2.75 | 4.4 | 7.04 | 17.6 | | 低压气密封试验压力 | 0.5-0.7 | | 适用介质 | C | P | I | | 水、油品、蒸汽 | 硝酸类 | 油品 | | 适用温度 | ≤425℃ | ≤100℃ | ≤550℃ |
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 结构长度：GB12221－89
法兰标准：JB79－59
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主要外形尺寸和连接尺寸
[ H44H H44W H44Y ]单位:毫米 | PN | DN | L | H | D | D1 | D2 | D6 | b | f | f1 | Z-φd | 2.5MPa | 50 | 230 | 160 | 160 | 125 | 100 | - | 20 | 3 | - | 4-18 | 65 | 290 | 175 | 180 | 145 | 120 | - | 22 | 3 | - | 8-18 | 80 | 310 | 185 | 195 | 160 | 135 | - | 22 | 3 | - | 8-18 | 100 | 350 | 220 | 230 | 190 | 160 | - | 24 | 3 | - | 8-15 | 125 | 400 | 248 | 270 | 220 | 188 | - | 28 | 3 | - | 8-25 | 150 | 480 | 276 | 300 | 250 | 218 | - | 30 | 3 | - | 8-25 | 200 | 550 | 350 | 360 | 310 | 278 | - | 34 | 3 | - | 12-25 | 250 | 650 | 410 | 425 | 370 | 332 | - | 36 | 3 | - | 12-30 | 300 | 750 | 430 | 485 | 430 | 390 | - | 40 | 4 | - | 16-30 | 350 | 850 | 518 | 550 | 490 | 448 | - | 44 | 4 | - | 16-34 | 400 | 950 | 560 | 610 | 550 | 505 | - | 48 | 4 | - | 16-34 | 500 | 1150 | 618 | 730 | 660 | 610 | - | 52 | 4 | - | 20-41 | | 4.0MPa | 50 | 230 | 169 | 160 | 125 | 100 | 88 | 20 | 3 | 4 | 4-18 | 65 | 290 | 173 | 180 | 145 | 120 | 110 | 22 | 3 | 4 | 8-18 | 80 | 310 | 185 | 195 | 160 | 135 | 121 | 22 | 3 | 4 | 8-18 | 100 | 350 | 220 | 230 | 190 | 160 | 150 | 24 | 3 | 4.5 | 8-25 | 125 | 400 | 248 | 270 | 220 | 188 | 176 | 28 | 3 | 4.5 | 8-25 | 150 | 480 | 270 | 300 | 250 | 218 | 204 | 30 | 3 | 4.5 | 8-25 | 200 | 550 | 342 | 375 | 320 | 282 | 260 | 38 | 3 | 4.5 | 12-30 | 250 | 650 | 401 | 445 | 385 | 345 | 313 | 42 | 3 | 4.5 | 12-34 | 300 | 750 | 423 | 510 | 450 | 408 | 364 | 46 | 4 | 4.5 | 16-34 | 350 | 850 | 455 | 570 | 510 | 465 | 422 | 52 | 4 | 5 | 16-34 | 400 | 950 | 510 | 655 | 585 | 535 | 474 | 58 | 4 | 5 | 16-41 | 6.4MPa | 50 | 300 | 177 | 175 | 135 | 105 | 88 | 26 | 3 | 4 | 4-23 | 65 | 340 | 197 | 200 | 160 | 130 | 110 | 28 | 3 | 4 | 8-23 | 80 | 380 | 212 | 210 | 170 | 140 | 121 | 30 | 3 | 4 | 8-23 | 100 | 430 | 248 | 250 | 200 | 168 | 150 | 32 | 3 | 4.5 | 8-25 | 125 | 500 | 296 | 295 | 240 | 202 | 176 | 36 | 3 | 4.5 | 8-30 | 150 | 550 | 330 | 340 | 280 | 240 | 204 | 38 | 3 | 4.5 | 8-34 | 200 | 650 | 385 | 405 | 345 | 300 | 260 | 44 | 3 | 4.5 | 12-34 | 250 | 775 | 445 | 470 | 400 | 352 | 313 | 48 | 3 | 4.5 | 12-41 | 300 | 900 | 474 | 530 | 460 | 412 | 364 | 54 | 4 | 4.5 | 16-41 | 350 | 1025 | 514 | 595 | 525 | 475 | 422 | 60 | 4 | 5 | 16-41 | 400 | 1150 | 616 | 670 | 585 | 525 | 474 | 66 | 4 | 5 | 16-48 | | 16.0MPa | 50 | 300 | 210 | 215 | 165 | 132 | 95 | 36 | 3 | 12 | 8-25 | 65 | 340 | 227 | 245 | 190 | 152 | 110 | 44 | 3 | 12 | 8-30 | 80 | 380 | 235 | 260 | 205 | 168 | 130 | 46 | 3 | 12 | 8-30 | 100 | 430 | 274 | 300 | 240 | 200 | 160 | 48 | 3 | 12 | 8-34 | 150 | 550 | 340 | 390 | 318 | 270 | 205 | 66 | 3 | 14 | 12-41 | 200 | 650 | 374 | 480 | 400 | 345 | 275 | 78 | 3 | 17 | 12-48 | 250 | 775 | 440 | 580 | 485 | 425 | 330 | 88 | 3 | 20 | 12-54 | 300 | 900 | 505 | 665 | 570 | 510 | 380 | 100 | 3 | 23 | 16-54 |
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