Products
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Product Name： Wafer butterfly valve (DH77X) Product Introduction： Wafer butterfly valve using advanced structural design, in line with international standards are the property of energy-related products. This product is non-return performance, security, reliability, low flow resistance, mainly used in petroleum, chemical, food, pharmaceutical, textile, paper, water, smelting and energy systems, used as a one-way valve. |
Technical Data
| DN（mm）Nominal Diameter | 50(2")~700(28") | 50(2")~450(18") | |
| Nominal pressure | 1.0 | 1.6 | |
| Testing Pressure | Sealing | 1.5 | 2.4 |
| Sealing | 1.1 | 1.76 | |
| ℃ Working Temperature | -15~+93 | ||
| Suitable Mediums | Fresh water,Sewage,sea Water,Air,Steam,Food,Medicine,Oils,Acids,etc. | ||
Features
1, small size, light weight, compact, and easy maintenance.
2, the valve plate with dual board plus two torsion springs designed to allow quick closing valve plate itself.
3, due to the speed and closing action to prevent the media back, eliminate water hammer effect is strong.
4, small size body length of the structure, good rigidity.
5, easy installation and can be installed on horizontal and vertical lines in both directions.
6, to be completely sealed, water pressure test leakage is zero.
7, safe and reliable performance, good anti-jamming.
8, flange dimensions of compliance GB4216.4-4216.5-84.
9. The length of the structure in line with GB12221-89, the provisions of ISO5752-82.
Note that when installed in horizontal pipelines, pumping turn this valve should be perpendicular to the horizontal, the vertical pipe should be installed to ensure the flow direction from bottom to top.
Meteria of Main Parts
| Body | Disc | stem | Bubber Gasket | Spring | ||||
| Name | 代號(hào) Code | Name | Code | Name | Name | Code | working temp | Name |
| Cast Lron | Z | Plated Ductile Iron | 1 | Stainless Steel | EPDM | X3 | -45~+121 Intemittence -50~+150 |
Stainless Steel |
| Ductile Lron | Q | Aluminum Bronze | 2 | Neoprene | X4 | -29~+99 Intemittence -35~+113 |
||
| Carbon Steel | C | ZGlCr.13Ni9T Stainless Steel | 5 | NBR | X5 | -23~+82 短時(shí)Intemittence -23~+93 -23~+150 |
||
| Stainless Steel | P | CF8MStainless Steel I | 7 | Neoprene | X7 | |||
Overall&Connection Dimensions&Weight of Wafer Butterfly Valve
| Nominal diameter DN |
Size(mm) | Weight (kg) |
||||||
| D | D1 | D2 | L | R | t | |||
| (MM) | (inch) | DH77X-10/16 | ||||||
| 50 | 2" | 107 | 65 | 43.3 | 43 | 28.8 | 19 | 1.5 |
| 65 | 2.5" | 127 | 80 | 60.2 | 46 | 36.1 | 20 | 2.4 |
| 80 | 3" | 142 | 94 | 66.4 | 64 | 43.4 | 27 | 3.6 |
| 100 | 4" | 162 | 117 | 90.8 | 64 | 52.8 | 28 | 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 | 35 | 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" | 539 555 |
450 | 419.9 | 152 | 217.8 | 58 | 101 107 |
| 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 |
