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用途及特点
蜗轮法兰式伸缩蝶阀适用于温度≤80℃，公称压力≤1.6MPa的食品、医药、化工、石油、电力、轻纺、造纸等给排水、气体管道上作调节流量和截流介质的作用，具有补偿管道热胀冷缩的功能。其主要特点为：
设计新颖，合理，结构独特，重量轻，操作方便，启闭迅速；
伸缩蝶阀除了能作调节和截流作用，补偿管道温差所产生的热胀冷缩功能外，还能为安装更换、维修提供方便；
密封部位可调节更换，密封性能可靠等特点。
采用标准
设计标准：GB/T12238-1989
法兰连接尺寸：GB/T9113.1-2000; GB/T9113.2-2000; GB/T9115.1-2000; GB/T9115.2-2000
压力试验：GB/T 13927-1992; JB/T 9092-1999
主要技术参数
| 公称通径 | DN | 50～2000 | ||
|---|---|---|---|---|
| 公称压力 | PN | 0.6 | 1.0 | 1.6 |
| 试验压力 | 强度实验 | 0.9 | 1.5 | 2.4 |
| 密封实验 | 0.66 | 1.1 | 1.76 | |
| 气密封实验 | 0.6 | 0.6 | 0.6 | |
| 使用温度 | ≤80℃ | |||
| 适应介质 | 空气、水、蒸汽、煤气、油品等 | |||
| 驱动形式 | 手动、蜗杆蜗轮传动、气传动、电传动 | |||
主要零件的材质
| 零件名称 | 材料 |
|---|---|
| 阀体 | 铸铁、铸钢、不锈钢铬、钼钢、合金钢 |
| 蝶板 | 铸钢、合金钢、不锈钢、铬钼钢 |
| 密封圈 | 橡胶、聚四氟、聚内脂、不锈钢 |
| 阀杆 | 2Cr13、不锈钢、铬钼钢 |
| 伸缩管 | 铸铁、铸钢、不锈钢、铬钼钢 |
| 填料 | 柔性石墨 |
SDt/d343(H.F.X)-(6、10、16)系列连接尺寸
| 公称通径 | 外形尺寸（参考值） | 法兰尺寸和螺栓尺寸（标准值） | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| H | H1 | 设计最大长度L | 设计最小长度L | 设计藏毒L | A | B | 0.6MPa | 1.0MPa | 1.6MPa | |||||||||||
| 毫米 | 英寸 | D | D1 | D2 | n-d | D | D1 | D2 | n-d | D | D1 | D2 | n-d | |||||||
| 50 | 2 | 80 | 309 | 164 | 138 | 151 | 180 | 200 | 140 | 110 | 88 | 4-14 | 165 | 125 | 99 | 4-18 | 165 | 125 | 99 | 4-18 |
| 65 | 21/2 | 95 | 337 | 190 | 154 | 172 | 180 | 200 | 160 | 130 | 108 | 4-14 | 185 | 145 | 118 | 4-18 | 185 | 145 | 118 | 4-18 |
| 80 | 3 | 98 | 347 | 195 | 163 | 177 | 180 | 200 | 190 | 150 | 124 | 4-18 | 200 | 160 | 132 | 8-18 | 200 | 160 | 132 | 8-18 |
| 100 | 4 | 114 | 373 | 227 | 184 | 206 | 180 | 200 | 210 | 170 | 144 | 4-18 | 220 | 180 | 156 | 8-18 | 220 | 180 | 156 | 8-18 |
| 125 | 5 | 128 | 405 | 254 | 195 | 215 | 180 | 200 | 240 | 200 | 176 | 8-18 | 250 | 210 | 184 | 8-18 | 250 | 210 | 184 | 8-18 |
| 150 | 6 | 139 | 440 | 240 | 201 | 225 | 270 | 280 | 265 | 225 | 199 | 8-18 | 285 | 240 | 211 | 8-22 | 285 | 240 | 211 | 8-22 |
| 200 | 8 | 174 | 612 | 265 | 215 | 245 | 400 | 425 | 320 | 280 | 254 | 8-18 | 340 | 295 | 266 | 8-22 | 340 | 294 | 266 | 12-22 |
| 250 | 10 | 215 | 693 | 295 | 235 | 265 | 400 | 425 | 375 | 335 | 309 | 12-18 | 395 | 350 | 319 | 12-22 | 405 | 355 | 319 | 12-26 |
| 300 | 12 | 245 | 747 | 308 | 254 | 282 | 450 | 560 | 440 | 395 | 363 | 12-22 | 445 | 400 | 370 | 12-22 | 460 | 410 | 370 | 12-26 |
| 350 | 14 | 270 | 802 | 325 | 271 | 300 | 450 | 560 | 490 | 445 | 413 | 12-22 | 505 | 460 | 429 | 16-22 | 520 | 470 | 429 | 16-26 |
| 400 | 16 | 305 | 991 | 345 | 283 | 314 | 535 | 580 | 540 | 495 | 463 | 16-22 | 565 | 515 | 480 | 16-26 | 580 | 525 | 480 | 16-30 |
| 450 | 18 | 325 | 1037 | 370 | 314 | 340 | 535 | 580 | 595 | 550 | 518 | 16-22 | 615 | 565 | 530 | 20-26 | 640 | 585 | 548 | 20-30 |
| 500 | 20 | 360 | 1127 | 377 | 316 | 346 | 535 | 580 | 645 | 600 | 568 | 20-22 | 670 | 620 | 582 | 20-26 | 715 | 650 | 609 | 20-33 |
| 600 | 24 | 445 | 1377 | 446 | 388 | 417 | 570 | 660 | 755 | 705 | 667 | 20-26 | 780 | 725 | 682 | 20-30 | 840 | 770 | 720 | 20-36 |
| 700 | 28 | 505 | 1496 | 445 | 395 | 425 | 750 | 660 | 860 | 810 | 772 | 24-26 | 895 | 840 | 794 | 24-30 | 910 | 840 | 794 | 24-36 |
| 800 | 32 | 560 | 1584 | 479 | 425 | 455 | 750 | 550 | 975 | 920 | 878 | 24-30 | 1015 | 950 | 901 | 24-33 | 1025 | 950 | 901 | 24-39 |
| 900 | 36 | 630 | 1676 | 515 | 455 | 485 | 750 | 550 | 1075 | 1020 | 978 | 24-30 | 1115 | 1050 | 1001 | 28-33 | 1125 | 1050 | 1001 | 28-39 |
| 1000 | 40 | 680 | 1760 | 525 | 465 | 495 | 900 | 750 | 1175 | 1120 | 1078 | 28-30 | 1230 | 1160 | 1112 | 28-36 | 1255 | 1170 | 1112 | 28-42 |
| 1200 | 48 | 795 | 2018 | 574 | 512 | 542 | 1000 | 925 | 1405 | 1340 | 1295 | 32-33 | 1455 | 1380 | 1328 | 32-39 | 1485 | 1390 | 1328 | 32-48 |
| 1400 | 56 | 900 | 2363 | 599 | 547 | 572 | 1000 | 925 | 1630 | 1560 | 1510 | 36-36 | 1675 | 1530 | 1530 | 36-42 | 1685 | 1590 | 1530 | 36-48 |
| 1600 | 64 | 1100 | 2723 | 640 | 589 | 615 | 1000 | 925 | 1830 | 1760 | 1710 | 40-36 | 1915 | 1820 | 1750 | 40-48 | 1930 | 1820 | 1750 | 40-56 |
| 1800 | 72 | 1124 | 2844 | 725 | 670 | 695 | 1100 | 980 | 2045 | 1970 | 1718 | 44-39 | 2115 | 2020 | 1950 | 44-48 | 2130 | 2020 | 1950 | 44-56 |
| 2000 | 80 | 1292 | 3127 | 764 | 680 | 722 | 1100 | 980 | 2265 | 2180 | 2125 | 48-42 | 2325 | 2230 | 2150 | 48-48 | 2345 | 2230 | 2150 | 48-62 |
SDt343H-6C-DN150,SDt343H-6C-DN200,SDt343H-6C-DN250,SDt343H-6C-DN300,SDt343H-6C-DN350,
SDt343H-6C-DN400,SDt343H-6C-DN450,SDt343H-6C-DN500,SDt343H-6C-DN600,SDt343H-6C-DN700,
SDt343H-6C-DN800,SDt343H-6C-DN900,SDt343H-6C-DN1000,SDt343H-6C-DN1200,SDt343H-6C-DN1400,
SDt343H-6C-DN1600,SDt343H-6C-DN1800,SDt343H-6C-DN2000,
SDt343H-6P-DN50,SDt343H-6P-DN65,SDt343H-6P-DN80,SDt343H-6P-DN100,SDt343H-6P-DN125,
SDt343H-6P-DN150,SDt343H-6P-DN200,SDt343H-6P-DN250,SDt343H-6P-DN300,SDt343H-6P-DN350,
SDt343H-6P-DN400,SDt343H-6P-DN450,SDt343H-6P-DN500,SDt343H-6P-DN600,SDt343H-6P-DN700,
SDt343H-6P-DN800,SDt343H-6P-DN900,SDt343H-6P-DN1000,SDt343H-6P-DN1200,SDt343H-6P-DN1400,
SDt343H-6P-DN1600,SDt343H-6P-DN1800,SDt343H-6P-DN2000,
SDt343H-10C-DN50,SDt343H-10C-DN65,SDt343H-10C-DN80,SDt343H-10C-DN100,SDt343H-10C-DN125,
SDt343H-10C-DN150,SDt343H-10C-DN200,SDt343H-10C-DN250,SDt343H-10C-DN300,SDt343H-10C-DN350,
SDt343H-10C-DN400,SDt343H-10C-DN450,SDt343H-10C-DN500,SDt343H-10C-DN600,SDt343H-10C-DN700,
SDt343H-10C-DN800,SDt343H-10C-DN900,SDt343H-10C-DN1000,SDt343H-10C-DN1200,SDt343H-10C-DN1400,
SDt343H-10C-DN1600,SDt343H-10C-DN1800,SDt343H-10C-DN2000,
SDt343H-10P-DN50,SDt343H-10P-DN65,SDt343H-10P-DN80,SDt343H-10P-DN100,SDt343H-10P-DN125,
SDt343H-10P-DN150,SDt343H-10P-DN200,SDt343H-10P-DN250,SDt343H-10P-DN300,SDt343H-10P-DN350,
SDt343H-10P-DN400,SDt343H-10P-DN450,SDt343H-10P-DN500,SDt343H-10P-DN600,SDt343H-10P-DN700,
SDt343H-10P-DN800,SDt343H-10P-DN900,SDt343H-10P-DN1000,SDt343H-10P-DN1200,SDt343H-10P-DN1400,
SDt343H-10P-DN1600,SDt343H-10P-DN1800,SDt343H-10P-DN2000,
SDt343H-16C-DN50,SDt343H-16C-DN65,SDt343H-16C-DN80,SDt343H-16C-DN100,SDt343H-16C-DN125,
SDt343H-16C-DN150,SDt343H-16C-DN200,SDt343H-16C-DN250,SDt343H-16C-DN300,SDt343H-16C-DN350,
SDt343H-16C-DN400,SDt343H-16C-DN450,SDt343H-16C-DN500,SDt343H-16C-DN600,SDt343H-16C-DN700,
SDt343H-16C-DN800,SDt343H-16C-DN900,SDt343H-16C-DN1000,SDt343H-16C-DN1200,SDt343H-16C-DN1400,
SDt343H-16C-DN1600,SDt343H-16C-DN1800,SDt343H-16C-DN2000,
SDt343H-16P-DN50,SDt343H-16P-DN65,SDt343H-16P-DN80,SDt343H-16P-DN100,SDt343H-16P-DN125,
SDt343H-16P-DN150,SDt343H-16P-DN200,SDt343H-16P-DN250,SDt343H-16P-DN300,SDt343H-16P-DN350,
SDt343H-16P-DN400,SDt343H-16P-DN450,SDt343H-16P-DN500,SDt343H-16P-DN600,SDt343H-16P-DN700,
SDt343H-16P-DN800,SDt343H-16P-DN900,SDt343H-16P-DN1000,SDt343H-16P-DN1200,SDt343H-16P-DN1400,
SDt343H-16P-DN1600,SDt343H-16P-DN1800,SDt343H-16P-DN2000,
SDt343F-6C-DN50,SDt343F-6C-DN65,SDt343F-6C-DN80,SDt343F-6C-DN100,SDt343F-6C-DN125,
SDt343F-6C-DN150,SDt343F-6C-DN200,SDt343F-6C-DN250,SDt343F-6C-DN300,SDt343F-6C-DN350,
SDt343F-6C-DN400,SDt343F-6C-DN450,SDt343F-6C-DN500,SDt343F-6C-DN600,SDt343F-6C-DN700,
SDt343F-6C-DN800,SDt343F-6C-DN900,SDt343F-6C-DN1000,SDt343F-6C-DN1200,SDt343F-6C-DN1400,
SDt343F-6C-DN1600,SDt343F-6C-DN1800,SDt343F-6C-DN2000,
SDt343F-6P-DN50,SDt343F-6P-DN65,SDt343F-6P-DN80,SDt343F-6P-DN100,SDt343F-6P-DN125,
SDt343F-6P-DN150,SDt343F-6P-DN200,SDt343F-6P-DN250,SDt343F-6P-DN300,SDt343F-6P-DN350,
SDt343F-6P-DN400,SDt343F-6P-DN450,SDt343F-6P-DN500,SDt343F-6P-DN600,SDt343F-6P-DN700,
SDt343F-6P-DN800,SDt343F-6P-DN900,SDt343F-6P-DN1000,SDt343F-6P-DN1200,SDt343F-6P-DN1400,
SDt343F-6P-DN1600,SDt343F-6P-DN1800,SDt343F-6P-DN2000,
SDt343F-10C-DN50,SDt343F-10C-DN65,SDt343F-10C-DN80,SDt343F-10C-DN100,SDt343F-10C-DN125,
SDt343F-10C-DN150,SDt343F-10C-DN200,SDt343F-10C-DN250,SDt343F-10C-DN300,SDt343F-10C-DN350,
SDt343F-10C-DN400,SDt343F-10C-DN450,SDt343F-10C-DN500,SDt343F-10C-DN600,SDt343F-10C-DN700,
SDt343F-10C-DN800,SDt343F-10C-DN900,SDt343F-10C-DN1000,SDt343F-10C-DN1200,SDt343F-10C-DN1400,
SDt343F-10C-DN1600,SDt343F-10C-DN1800,SDt343F-10C-DN2000,
SDt343F-10P-DN50,SDt343F-10P-DN65,SDt343F-10P-DN80,SDt343F-10P-DN100,SDt343F-10P-DN125,
SDt343F-10P-DN150,SDt343F-10P-DN200,SDt343F-10P-DN250,SDt343F-10P-DN300,SDt343F-10P-DN350,
SDt343F-10P-DN400,SDt343F-10P-DN450,SDt343F-10P-DN500,SDt343F-10P-DN600,SDt343F-10P-DN700,
SDt343F-10P-DN800,SDt343F-10P-DN900,SDt343F-10P-DN1000,SDt343F-10P-DN1200,SDt343F-10P-DN1400,
SDt343F-10P-DN1600,SDt343F-10P-DN1800,SDt343F-10P-DN2000,
SDt343F-16C-DN50,SDt343F-16C-DN65,SDt343F-16C-DN80,SDt343F-16C-DN100,SDt343F-16C-DN125,
SDt343F-16C-DN150,SDt343F-16C-DN200,SDt343F-16C-DN250,SDt343F-16C-DN300,SDt343F-16C-DN350,
SDt343F-16C-DN400,SDt343F-16C-DN450,SDt343F-16C-DN500,SDt343F-16C-DN600,SDt343F-16C-DN700,
SDt343F-16C-DN800,SDt343F-16C-DN900,SDt343F-16C-DN1000,SDt343F-16C-DN1200,SDt343F-16C-DN1400,
SDt343F-16C-DN1600,SDt343F-16C-DN1800,SDt343F-16C-DN2000,
SDt343F-16P-DN50,SDt343F-16P-DN65,SDt343F-16P-DN80,SDt343F-16P-DN100,SDt343F-16P-DN125,
SDt343F-16P-DN150,SDt343F-16P-DN200,SDt343F-16P-DN250,SDt343F-16P-DN300,SDt343F-16P-DN350,
SDt343F-16P-DN400,SDt343F-16P-DN450,SDt343F-16P-DN500,SDt343F-16P-DN600,SDt343F-16P-DN700,
SDt343F-16P-DN800,SDt343F-16P-DN900,SDt343F-16P-DN1000,SDt343F-16P-DN1200,SDt343F-16P-DN1400,
SDt343F-16P-DN1600,SDt343F-16P-DN1800,SDt343F-16P-DN2000,
SDt343X-6C-DN50,SDt343X-6C-DN65,SDt343X-6C-DN80,SDt343X-6C-DN100,SDt343X-6C-DN125,
SDt343X-6C-DN150,SDt343X-6C-DN200,SDt343X-6C-DN250,SDt343X-6C-DN300,SDt343X-6C-DN350,
SDt343X-6C-DN400,SDt343X-6C-DN450,SDt343X-6C-DN500,SDt343X-6C-DN600,SDt343X-6C-DN700,
SDt343X-6C-DN800,SDt343X-6C-DN900,SDt343X-6C-DN1000,SDt343X-6C-DN1200,SDt343X-6C-DN1400,
SDt343X-6C-DN1600,SDt343X-6C-DN1800,SDt343X-6C-DN2000,
SDt343X-6P-DN50,SDt343X-6P-DN65,SDt343X-6P-DN80,SDt343X-6P-DN100,SDt343X-6P-DN125,
SDt343X-6P-DN150,SDt343X-6P-DN200,SDt343X-6P-DN250,SDt343X-6P-DN300,SDt343X-6P-DN350,
SDt343X-6P-DN400,SDt343X-6P-DN450,SDt343X-6P-DN500,SDt343X-6P-DN600,SDt343X-6P-DN700,
SDt343X-6P-DN800,SDt343X-6P-DN900,SDt343X-6P-DN1000,SDt343X-6P-DN1200,SDt343X-6P-DN1400,
SDt343X-6P-DN1600,SDt343X-6P-DN1800,SDt343X-6P-DN2000,
SDt343X-10C-DN50,SDt343X-10C-DN65,SDt343X-10C-DN80,SDt343X-10C-DN100,SDt343X-10C-DN125,
SDt343X-10C-DN150,SDt343X-10C-DN200,SDt343X-10C-DN250,SDt343X-10C-DN300,SDt343X-10C-DN350,
SDt343X-10C-DN400,SDt343X-10C-DN450,SDt343X-10C-DN500,SDt343X-10C-DN600,SDt343X-10C-DN700,
SDt343X-10C-DN800,SDt343X-10C-DN900,SDt343X-10C-DN1000,SDt343X-10C-DN1200,SDt343X-10C-DN1400,
SDt343X-10C-DN1600,SDt343X-10C-DN1800,SDt343X-10C-DN2000,
SDt343X-10P-DN50,SDt343X-10P-DN65,SDt343X-10P-DN80,SDt343X-10P-DN100,SDt343X-10P-DN125,
SDt343X-10P-DN150,SDt343X-10P-DN200,SDt343X-10P-DN250,SDt343X-10P-DN300,SDt343X-10P-DN350,
SDt343X-10P-DN400,SDt343X-10P-DN450,SDt343X-10P-DN500,SDt343X-10P-DN600,SDt343X-10P-DN700,
SDt343X-10P-DN800,SDt343X-10P-DN900,SDt343X-10P-DN1000,SDt343X-10P-DN1200,SDt343X-10P-DN1400,
SDt343X-10P-DN1600,SDt343X-10P-DN1800,SDt343X-10P-DN2000,
SDt343X-16C-DN50,SDt343X-16C-DN65,SDt343X-16C-DN80,SDt343X-16C-DN100,SDt343X-16C-DN125,
SDt343X-16C-DN150,SDt343X-16C-DN200,SDt343X-16C-DN250,SDt343X-16C-DN300,SDt343X-16C-DN350,
SDt343X-16C-DN400,SDt343X-16C-DN450,SDt343X-16C-DN500,SDt343X-16C-DN600,SDt343X-16C-DN700,
SDt343X-16C-DN800,SDt343X-16C-DN900,SDt343X-16C-DN1000,SDt343X-16C-DN1200,SDt343X-16C-DN1400,
SDt343X-16C-DN1600,SDt343X-16C-DN1800,SDt343X-16C-DN2000,
SDt343X-16P-DN50,SDt343X-16P-DN65,SDt343X-16P-DN80,SDt343X-16P-DN100,SDt343X-16P-DN125,
SDt343X-16P-DN150,SDt343X-16P-DN200,SDt343X-16P-DN250,SDt343X-16P-DN300,SDt343X-16P-DN350,
SDt343X-16P-DN400,SDt343X-16P-DN450,SDt343X-16P-DN500,SDt343X-16P-DN600,SDt343X-16P-DN700,
SDt343X-16P-DN800,SDt343X-16P-DN900,SDt343X-16P-DN1000,SDt343X-16P-DN1200,SDt343X-16P-DN1400,
SDt343X-16P-DN1600,SDt343X-16P-DN1800,SDt343X-16P-DN2000,
SDd343H-6C-DN50,SDd343H-6C-DN65,SDd343H-6C-DN80,SDd343H-6C-DN100,SDd343H-6C-DN125,
SDd343H-6C-DN150,SDd343H-6C-DN200,SDd343H-6C-DN250,SDd343H-6C-DN300,SDd343H-6C-DN350,
SDd343H-6C-DN400,SDd343H-6C-DN450,SDd343H-6C-DN500,SDd343H-6C-DN600,SDd343H-6C-DN700,
SDd343H-6C-DN800,SDd343H-6C-DN900,SDd343H-6C-DN1000,SDd343H-6C-DN1200,SDd343H-6C-DN1400,
SDd343H-6C-DN1600,SDd343H-6C-DN1800,SDd343H-6C-DN2000,
SDd343H-6P-DN50,SDd343H-6P-DN65,SDd343H-6P-DN80,SDd343H-6P-DN100,SDd343H-6P-DN125,
SDd343H-6P-DN150,SDd343H-6P-DN200,SDd343H-6P-DN250,SDd343H-6P-DN300,SDd343H-6P-DN350,
SDd343H-6P-DN400,SDd343H-6P-DN450,SDd343H-6P-DN500,SDd343H-6P-DN600,SDd343H-6P-DN700,
SDd343H-6P-DN800,SDd343H-6P-DN900,SDd343H-6P-DN1000,SDd343H-6P-DN1200,SDd343H-6P-DN1400,
