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旋启式止回阀的采用内装摇臂旋启式结构,阀门的所有启闭件都装于阀体内部,不穿透阀体,除了中法兰部位用密封垫片和密封环外,整体没有外漏点,杜绝阀门外泄的可能。 旋启式止回阀摇臂和阀瓣连接处采用球面连接的结构,使得阀瓣在360度范围内有一定的自由度,有适当的微量位置补偿。适用于清净介质,不宜用于含有固体颗粒和粘度较大的介质。
旋启式止回阀结构与特点
1、选材考究,符合国内、外相关标准,材料的全面质量高。
2、密封副配对合理,阀瓣、阀座密封面采用铁基合金或司太立(Stellite)钴基硬质合金堆焊面成,耐磨、耐高温、耐腐蚀、抗擦伤性能好,使用寿命长。
3、可采用各种配管法兰标准及法兰密封型式,满足各种工程需要及用户要求。
4、阀体材料品种齐全,垫片可根据实际工况或用户要求合理选配,能适用于各种压力、温度及介质工况。
应用规范
1、设计制造按GB/T12236-2008
2、结构长度按GB/T12221-2005
3、法兰型式及尺寸HG/T20592-2009
4、阀门检查和试验按GB/T13927
国标旋启式法兰止回阀 | ||||||||||
主体外形和连接尺寸Main External and Connection Dimension | ||||||||||
公称压力Nominal Pressure | Size | Dimension(mm) | ||||||||
DN | L | D(1) | D(2) | C | g | T | t | H | n-Ø | |
PN1.6MPa | 15 | 130 | 95 | 95 | 65 | 45 | 14 | 2 | ˉ | 4-14 |
20 | 150 | 105 | 105 | 75 | 55 | 14 | 2 | ˉ | 4-14 | |
25 | 160 | 115 | 115 | 85 | 65 | 14 | 2 | ˉ | 4-14 | |
32 | 180 | 135 | 135 | 100 | 78 | 16 | 2 | ˉ | 4-18 | |
40 | 200 | 145 | 150 | 110 | 85 | 16 | 3 | ˉ | 4-18 | |
50 | 230 | 160 | 165 | 125 | 100 | 16 | 3 | 160 | 4-18 | |
65 | 290 | 180 | 185 | 145 | 120 | 18 | 3 | 177 | 4-18 | |
80 | 310 | 195 | 200 | 160 | 135 | 20 | 3 | 187 | 8-18 | |
100 | 350 | 215 | 220 | 180 | 155 | 20 | 3 | 202 | 8-18 | |
125 | 400 | 245 | 250 | 210 | 185 | 22 | 3 | 227 | 8-18 | |
150 | 480 | 280 | 285 | 240 | 210 | 24 | 3 | 263 | 8-23 | |
200 | 550 | 335 | 340 | 295 | 265 | 26 | 3 | 293 | 12-23 | |
250 | 650 | 405 | 405 | 355 | 320 | 30 | 3 | 330 | 12-25 | |
300 | 750 | 460 | 460 | 410 | 375 | 30 | 4 | 392 | 12-25 | |
350 | 850 | 520 | 520 | 470 | 435 | 34 | 4 | 430 | 16-25 | |
400 | 950 | 580 | 580 | 525 | 485 | 36 | 4 | 480 | 16-30 | |
500 | 1150 | 705 | 705 | 650 | 608 | 44 | 4 | 560 | 20-34 | |
主体外形和连接尺寸Main External and Connection Dimension | ||||||||||
公称压力Nominal Pressure | Size | Dimension(mm) | ||||||||
DN | L | D(1) | D(2) | C | g | T | t | H | n-Ø | |
PN2.5MPa | 15 | 130 | 95 | 95 | 65 | 45 | 16 | 2 | ˉ | 4-14 |
20 | 150 | 105 | 105 | 75 | 55 | 16 | 2 | ˉ | 4-14 | |
25 | 160 | 115 | 115 | 85 | 65 | 16 | 2 | ˉ | 4-14 | |
32 | 180 | 135 | 135 | 100 | 78 | 18 | 2 | ˉ | 4-18 | |
40 | 200 | 145 | 150 | 110 | 85 | 18 | 3 | ˉ | 4-18 | |
50 | 230 | 160 | 165 | 125 | 100 | 20 | 3 | 177 | 4-18 | |
65 | 290 | 180 | 185 | 145 | 120 | 22 | 3 | 192 | 8-18 | |
80 | 310 | 195 | 200 | 160 | 160 | 22 | 3 | 192 | 8-18 | |
100 | 350 | 230 | 235 | 190 | 188 | 24 | 3 | 217 | 8-23 | |
125 | 400 | 270 | 275 | 220 | 218 | 28 | 3 | 250 | 8-25 | |
150 | 480 | 300 | 305 | 250 | 278 | 30 | 3 | 270 | 8-23 | |
200 | 550 | 360 | 365 | 310 | 332 | 34 | 3 | 350 | 12-25 | |
250 | 650 | 425 | 430 | 370 | 390 | 36 | 3 | 410 | 12-30 | |
300 | 750 | 485 | 490 | 430 | 448 | 40 | 4 | 430 | 16-30 | |
350 | 850 | 550 | 555 | 190 | 505 | 44 | 4 | 450 | 16-34 | |
400 | 950 | 610 | 615 | 550 | 610 | 48 | 4 | 560 | 16-34 | |
500 | 1150 | 730 | 735 | 660 | 608 | 52 | 4 | 618 | 20-41 | |
PN4.0MPa | 50 | 230 | 160 | 95 | 125 | 100 | 20 | 3 | 177 | 4-18 |
65 | 290 | 180 | 105 | 145 | 120 | 22 | 3 | 192 | 8-18 | |
80 | 310 | 195 | 115 | 160 | 135 | 22 | 3 | 192 | 8-18 | |
100 | 350 | 230 | 140 | 190 | 160 | 24 | 3 | 217 | 8-23 | |
125 | 400 | 270 | 150 | 220 | 188 | 28 | 3 | 259 | 8-25 | |
150 | 480 | 300 | 165 | 250 | 218 | 30 | 3 | 270 | 8-25 | |
200 | 550 | 375 | 185 | 320 | 282 | 38 | 3 | 340 | 12-30 | |
250 | 650 | 445 | 200 | 385 | 345 | 42 | 3 | 401 | 12-34 | |
300 | 750 | 510 | 235 | 450 | 408 | 46 | 4 | 423 | 16-34 | |
350 | 850 | 570 | 270 | 510 | 465 | 52 | 4 | 460 | 16-34 | |
400 | 950 | 655 | 300 | 585 | 535 | 58 | 4 | 490 | 16-41 | |
500 | 1150 | 755 | 375 | 670 | 612 | 62 | 4 | 618 | 20-18 | |
主体外形和连接尺寸Main External and Connection Dimension | ||||||||||
公称压力Nominal Pressure | Size | Dimension(mm) | ||||||||
DN | L | D(1) | D(2) | C | g | T | t | H | n-Ø | |
PN6.4MPa | 50 | 300 | 175 | 180 | 135 | 105 | 26 | 3 | 192 | 4-23 |
65 | 340 | 200 | 205 | 160 | 130 | 28 | 3 | 207 | 8-23 | |
80 | 380 | 210 | 215 | 170 | 140 | 30 | 3 | 207 | 8-23 | |
100 | 430 | 250 | 255 | 200 | 168 | 32 | 3 | 235 | 8-25 | |
125 | 500 | 295 | 230 | 240 | 202 | 36 | 3 | 265 | 8-30 | |
150 | 550 | 340 | 345 | 280 | 240 | 38 | 3 | 297 | 8-34 | |
200 | 650 | 405 | 410 | 345 | 300 | 44 | 3 | 357 | 12-34 | |
250 | 775 | 470 | ˉ | 400 | 352 | 48 | 3 | 405 | 12-41 | |
300 | 900 | 530 | ˉ | 460 | 412 | 51 | 4 | 465 | 16-41 | |
350 | 1025 | 595 | ˉ | 525 | 475 | 60 | 4 | 514 | 16-41 | |
400 | 1150 | 670 | ˉ | 585 | 525 | 66 | 4 | 568 | 16-48 | |
500 | 1400 | 800 | ˉ | 705 | 640 | 70 | 4 | 620 | 20-54 | |
PN10.0MPa | 50 | 300 | 195 | 200 | 145 | 112 | 28 | 3 | 192 | 4-25 |
65 | 340 | 220 | 225 | 170 | 138 | 32 | 3 | 207 | 8-25 | |
80 | 380 | 230 | 235 | 180 | 148 | 34 | 3 | 235 | 8-25 | |
100 | 430 | 265 | 270 | 210 | 172 | 38 | 3 | 265 | 8-30 | |
125 | 500 | 310 | 315 | 250 | 210 | 42 | 3 | 313 | 8-34 | |
150 | 550 | 350 | 355 | 290 | 250 | 46 | 3 | 360 | 12-34 | |
200 | 650 | 430 | 435 | 360 | 312 | 54 | 3 | 420 | 12-41 | |
250 | 775 | 500 | ˉ | 430 | 382 | 60 | 3 | 480 | 12-41 |