Description
Check valve is a device in a pipeline that allows fluids or gases to flow in only one direction. When the pressure of the fluid or gas in the pipeline exceeds a certain value, the valve opens, allowing the substance to pass through. However, when the pressure drops or tries to move in the opposite direction, the valve closes, preventing backflow. Check valves are widely used in various industrial and commercial applications to ensure safety and control the flow in pipeline systems.
Technical data of check valves DNOVA connection type - flanged, valve type - lifting VC1130M-F
| Working pressure, bar | 16 |
| Temperature of working environment t, °C | ≤200 |
| Working environment | water, steam, oil |
| Direction of supply of working medium | arrow on the valve body |
| Connection to the pipeline | flanged |
| Sealing class | D according to ISO 5208 |
| Body material | cast iron GG25 |
| Application areas | heating and water supply systems; steam plants; industrial pipelines. |
Dimensions of the check valve DNOVA 287A, body material - cast iron GG25
| DN | L, mm | D, mm | D1, mm | D2, mm | B-f, mm | Z-Ød | Weight,kg |
| 15 | 130±2 | 95 | 65 | 46 | 14-2 | 4 – Ø14 | 2,73 |
| 20 | 150±2 | 105 | 75 | 56 | 16-2 | 4 – Ø14 | 3,48 |
| 25 | 160±2 | 115 | 85 | 65 | 16-2 | 4 – Ø14 | 4,43 |
| 32 | 180±2 | 140 | 100 | 76 | 18-2 | 4 – Ø19 | 6,51 |
| 40 | 200±2 | 150 | 110 | 84 | 18-2 | 4 – Ø19 | 7,7 |
| 50 | 230±2 | 165 | 125 | 99 | 20-2 | 4 – Ø19 | 12,16 |
| 65 | 290±2 | 185 | 145 | 118 | 20-2 | 4 – Ø19 | 18,76 |
| 80 | 310±2 | 200 | 160 | 132 | 22-2 | 8 – Ø19 | 24,48 |
| 100 | 350±2 | 220 | 180 | 156 | 24-2 | 8 – Ø19 | 34,84 |
| 125 | 400±2 | 250 | 210 | 184 | 26-2 | 8 – Ø19 | 50,6 |
| 150 | 480±2 | 285 | 240 | 211 | 26-2 | 8 – Ø23 | 68,27 |
| 200 | 600±2 | 340 | 295 | 266 | 30-2 | 12 – Ø23 | 108,2 |
Dimensional sketch of check valve DNOVA 287A, body material - cast iron GG25, closure element material - stainless steel AISI 420, seal - stainless steel
Materials of the check valve parts DNOVA 287A, body material - cast iron GG25
| № | Part name | Material |
| 1 | Body | cast iron HT250(GG25) |
| 2 | Bolt | steel 35 |
| 3 | Cover | GGG40 cast iron |
| 4 | spool | Z2Cr13 (G-X20Cr14) |
| 5 | Spring | 304 (G-X6CrNI189) |
| 6 | gland | steel 08 + thermally expanded graphite |
| 7 | Housing O-ring | Z2Cr13 (G-X20Cr14) |
Material sketch of check valve DNOVA 287A, body material - cast iron GG25, closure element material - stainless steel AISI 420, seal - stainless steel
Specifications
Delivery
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