wafer type butterfly check valve
technical parameter
item model number: dh76x
nominal diameter: dn50~600mm
nominal pressure: pn1.0~4.0mpa
operating temperature: ≤100°c/425°c
applicable medium: water, steam, oil, etc.
product description
dh76x wafer type butterfly check valve is an energy-saving product designed by our factory with advanced foreign structure, in line with relevant national standards. this product has good non-return performance, safety and reliability, and small flow resistance coefficient. it is mainly used in petroleum, chemical, food, medicine, light textile, papermaking, water supply and drainage, smelting and energy systems as a one-way valve.
product features
1. small size, light weight, compact structure and easy maintenance.
2. the valve plate adopts the dual type, which can be closed quickly by itself under the elastic moment of the spring.
3. due to the quick closing effect, it can prevent the backflow of the medium and has a strong effect of eliminating water hammer.
4. the valve body has small length and dimension, good rigidity, safety and reliability.
5. to achieve complete sealing, the leakage of hydraulic test is zero.
6. easy to install, can be used for horizontal and vertical installation.
7. the flange connection size conforms to the provisions of gb/t17241.6.
8. the length of the structure conforms to the provisions of gb/t12221 and iso5752.
main external connection dimensions
dn(mm) | nps(in) | d | d1 | d2 | l | r | t | wt (kg) |
100 | 4" | 162 | 117 | 90.8 | 64 | 52.8 | 27 | 5.7 |
125 | 5" | 192 | 145 | 116.9 | 70 | 65.7 | 30 | 7.3 |
150 | 6" | 218 | 170 | 144.6 | 76 | 78.6 | 31 | 9.0 |
200 | 8" | 273 | 224 | 198.2 | 89 | 104.4 | 33 | 17 |
250 | 10" | 328 | 265 | 233.7 | 114 | 127 | 50 | 26 |
300 | 12" | 378 | 310 | 283.9 | 114 | 148.3 | 43 | 42 |
350 | 14" | 438 | 360 | 332.9 | 127 | 172.4 | 45 | 55 |
400 | 16" | 489 | 410 | 381.0 | 140 | 197.4 | 52 | 75 |
450 | 18" | 539 | 450 | 419.9 | 152 | 217.8 | 58 | 101 |
500 | 20" | 594 | 505 | 467.8 | 152 | 241 | 58 | 111 |
600 | 24" | 690 | 624 | 572.6 | 178 | 295.4 | 73 | 172 |
700 | 28" | 800 | 720 | 680 | 229 | 354 | 98 | 219 |