SD341H/X Executive standard of telescopic flange butterfly valve
| Design and manufacture | Flange connection | Structural length | Test and inspection |
| GB/T12238¡¢JB/T8527 | GB/T9113¡¢JB/T79¡¢HG/T20592¡¢EN1092-1/2¡¢ASME B16.5/B16.47 | GB/T12221 | GB/T13927 |
SD341H/X Main technical parameters of telescopic flange butterfly valve
| Nominal diameter | DN(mm) | 50~2000 | ||
| Nominal pressure | PN(MPa) | 0.6 | 1.0 | 1.6 |
| Test pressure Ps(MPa) | strength test | 0.9 | 1.5 | 2.4 |
| Sealing test | 0.66 | 1.1 | 1.76 | |
| Airtight seal test | 0.6 | 0.6 | 0.6 | |
| Applicable temperature | ¡Ü120¡æ | |||
| Applicable media | Air, water, steam, gas, oil | |||
| Driving form | Worm gear drive, pneumatic drive, electric drive, hydraulic drive | |||
SD341H/X Material of main parts of telescopic flange butterfly valve
| Part name | Material Science |
| valve body | Cast steel, stainless steel, chromium molybdenum steel, alloy steel, dual phase steel |
| Disc | Cast steel, stainless steel, chromium molybdenum steel, alloy steel, dual phase steel |
| valve seat | Stainless steel, butt welding Stellite, etc |
| seal ring | Stainless steel and high temperature resistant asbestos board are combined into multi-layer |
| Stem | 20cr13, 1Cr13 stainless steel, chromium molybdenum steel, special materials |
| axle sleeve | Austenitic stainless steel, 304 nitriding |
| filler | Flexible graphite, PTFE |
| Packing gland | Cast steel, stainless steel |
| Bracket | Cast steel, stainless steel |
Product use
Telescopic butterfly valve is widely used in food with temperature ¡Ü 80 ¡æ and nominal pressure ¡Ü 1.6Mpa. It is used to regulate the flow rate and cut off the medium on the water supply and drainage and gas pipelines of medicine, chemical industry, petroleum, electric power, light textile and papermaking.
Product features
1. The design is novel, reasonable, unique in structure, light in weight, convenient in operation and quick in opening and closing;
2. The telescopic butterfly valve can not only adjust and cut off the flow, but also compensate for the expansion and cold contraction caused by the temperature difference of the pipeline, but also provide convenience for the installation, replacement and maintenance of the valve;
3. The sealing parts can be adjusted and replaced, and the sealing performance is reliable.
SD341H/X Design drawing of telescopic flange butterfly valve
SD341H/X-6/10/Q/C Main dimensions of expansion flange butterfly valve
| pressure | DN | Longest L2 | middle L | minimum L1 | D | D1 | D2 | Z-¦µd | H1 | H2 |
| 1.0MPa | 100 | 196 | 190 | 164 | 220 | 180 | 158 | 8-18 | 120 | 239 |
| 150 | 227 | 210 | 192 | 285 | 240 | 212 | 8-22 | 124 | 278 | |
| 200 | 247 | 230 | 212 | 340 | 295 | 268 | 8-22 | 170 | 295 | |
| 250 | 267 | 250 | 230 | 395 | 350 | 320 | 12-22 | 198 | 357 | |
| 300 | 286 | 270 | 252 | 445 | 400 | 370 | 12-22 | 218 | 353 | |
| 350 | 310 | 290 | 270 | 505 | 460 | 430 | 16-22 | 253 | 427 | |
| 400 | 332 | 310 | 290 | 565 | 515 | 482 | 16-26 | 285 | 465 | |
| 450 | 352 | 330 | 310 | 615 | 565 | 532 | 20-26 | 310 | 490 | |
| 500 | 375 | 350 | 330 | 670 | 620 | 585 | 20-26 | 340 | 520 | |
| 600 | 420 | 390 | 360 | 780 | 725 | 685 | 20-30 | 397 | 610 | |
| 700 | 465 | 430 | 395 | 895 | 840 | 800 | 24-30 | 467 | 690 | |
| 800 | 510 | 470 | 430 | 1015 | 950 | 905 | 24-33 | 530 | 765 | |
| 900 | 555 | 510 | 465 | 1115 | 1050 | 1005 | 28-33 | 595 | 830 | |
| 1000 | 600 | 550 | 500 | 1230 | 1160 | 1110 | 28-36 | 670 | 910 | |
| 1200 | 690 | 630 | 570 | 1455 | 1380 | 1330 | 32-39 | 785 | 1030 | |
| 1400 | 780 | 710 | 640 | 1675 | 1590 | 1535 | 36-42 | 835 | 1180 | |
| 0.6MPa | 1600 | 860 | 790 | 750 | 1830 | 1760 | 1710 | 40-36 | 1100 | 1300 |
| 1800 | 940 | 870 | 800 | 2045 | 1970 | 1920 | 44-39 | 1180 | 1400 | |
| 2000 | 1020 | 950 | 880 | 2265 | 2100 | 2125 | 48-42 | 1300 | 1580 |
Note: the flange dimensions in this table are in accordance with JB / T 79 Series 1 and en 1092-1 / 2, and the structural length is in accordance with GB / T 12221 / API 609 and en558 standards.
Like valve (Tianjin) Co., Ltd., a valve manufacturer located in Tianjin, has a complete production process, and has obtained many certificates and patents, such as ISO9001, ISO14001, OHSAS18001, TS, API, CE, CCCF, etc., to provide protection for global customers.
