1. Working pressure :4.0 Mpa
2. Working temperature :
-100℃--- +400℃
3. Face to face : DIN3202 K4
4. Flanged standards: EN1902-2 etc.
5. Testing : DIN3230 , API 598
6. Medium : Fresh Water , Sea Water , Food stuff , all kinds of oil , acid ,alkaline liquid etc.
| No. | Part | Material |
| 1 | Disc | SS316/SS304 |
| 2 | Body | SS316/304/Brass |
| 3 | Bolts | SS316 |
| 4 | Spring cover | SS316 |
| 5 | Spring | SS316 |
| DN(mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
| ∮D(mm) | 53 | 63 | 73 | 84 | 94 | 107 | 126 | 144 | 164 |
| ∮E(mm) | 15 | 20 | 25 | 30 | 38 | 47 | 62 | 77 | 95 |
| ∮L(mm) | 16 | 19 | 22 | 28 | 31.5 | 40 | 46 | 50 | 60 |
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