★ 手动不锈钢法兰蝶阀：D343H/Y 三偏心金属硬密封手动蝶阀生产标准
设计标准：GB/T12238-1989；JB/T8527-1997
法兰连接尺寸： GB/T9113.1-2000；GB/T9113.2-2000 GB/T9115.1-2000；GB/T9115.2-2000
结构长度：GB/T12221-1989
压力试验：GB/T13927-1992；JB/T9092-1999
★ D341手动不锈钢法兰蝶阀主要外形和连接尺寸：
| 公称通径 DN(mm) |
尺寸 (mm) | ||||||
| L | 1.0MPa | 1.6MPa | |||||
| D | D1 | Z-Φd | D | D1 | Z-Φd | ||
| 50 | 108 | 165 | 125 | 4-18 | 165 | 125 | 4-18 |
| 65 | 112 | 185 | 145 | 4-18 | 185 | 145 | 4-18 |
| 80 | 114 | 200 | 160 | 8-18 | 200 | 160 | 8-18 |
| 100 | 127 | 220 | 180 | 8-18 | 220 | 180 | 8-18 |
| 125 | 140 | 250 | 210 | 8-18 | 250 | 210 | 8-18 |
| 150 | 140 | 285 | 240 | 8-22 | 285 | 240 | 8-22 |
| 200 | 152 | 340 | 295 | 8-22 | 340 | 295 | 12-22 |
| 250 | 165 | 395 | 350 | 12-22 | 405 | 355 | 12-26 |
| 300 | 178 | 445 | 400 | 12-22 | 460 | 410 | 12-26 |
| 350 | 190 | 505 | 460 | 16-22 | 520 | 470 | 16-26 |
| 400 | 216 | 565 | 515 | 16-26 | 580 | 525 | 16-30 |
| 450 | 222 | 615 | 565 | 20-26 | 640 | 585 | 20-30 |
| 500 | 229 | 670 | 620 | 20-26 | 710 | 650 | 20-33 |
| 600 | 267 | 780 | 725 | 20-30 | 840 | 770 | 20-36 |
| 700 | 292 | 895 | 840 | 24-30 | 910 | 840 | 24-36 |
| 800 | 318 | 1015 | 950 | 24-33 | 1025 | 950 | 24-39 |
