Đặc điểm của Van an toàn Nordsteam NST-OKEV/Y
NST-OKEV/Y Proportional lift safety valves with springs are prefered in hot/cold water systems,fluid that no properties of acid and alcaline and also not flammable.
[TABS_R id=12416]
Sơ đồ cấu tạo

Thông số kỹ thuật
| SPARE PARTS | ||
| No | Part Name | Material |
| 1 | BODY | GG25 –EN GJL 250 GGG40 –EN GJS 400-15 |
| 2 | COVER | GG25 –EN GJL 250 GGG40 –EN GJS 400-15 |
| 3 | SEAT | X5CrNi18-8 –AISI 302 |
| 4 | SPRING | X12CrNi18 8 –AISI 302 |
| 5 | FLAP | X5CrNi18 10 –AISI304 |
| 6 | SHAFT | X5CrNi18 10 –AISI304 |
| DIMENSIONS | ||||
| SIZE | d | L1 | L | H |
| DN25 | 115 | 100 | 105 | 405 |
| DN32 | 140 | 105 | 115 | 410 |
| DN40 | 150 | 115 | 140 | 430 |
| DN50 | 165 | 125 | 15, | 480 |
| DN65 | 185 | 145 | 170 | 512 |
| DN80 | 200 | 155 | 195 | 555 |
| CONNECTIONS | FLANGED | |||||
| SIZES | DN25 | DN32 | DN40 | DN50 | DN65 | DN80 |
| WEIGHTS (KGS) | 9,8 | 11,7 | 13,8 | 17 | 26,5 | 30 |
| TECHNICAL SPECIFICATIONS | |
| THE RANGE OF OPERATING TEMPERATURE (°C) | -10/120C DEGREE AT 16 BAR 13 BAR 200 °C 11 BAR 250 °C 10 BAR 300 °C |
| CONNECTION SIZES | TS EN 1092-2 (PN16) |
| NOMINAL PRESSURE (BAR) | PN6 |
| FACE TO FACE DIMENSIONS | TS EN 558 |
| DESIGN | TS EN ISO 4126 |
| TESTS | TS EN 12266-1 |









