Type 31 Safety-Valve
| Standard version: | ||||
|---|---|---|---|---|
| Material: | Inlet body | / | Spring bonnet, outlet body |
|
| Type 31.1: | BG I BG II-IV | 1.0460 1.0460, 1.0619 | / / | 0.7043 1.0619 |
| Type 31.2: | BG I BG II-IV | 1.4571 1.4571, 1.4581 | / / | 1.4581 1.4581 |
| Type 31.7: | BG I-IV | 1.4571 | / | 1.4308 |
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