| Design | 2-way ball valve | ||
| Sealing principle | Soft | ||
| Type of mounting | In-line installation | ||
| Switching position indicator | Slot direction = flow direction | ||
| Inside diameter | 50 mm | ||
| Valve function | 2/2 | ||
| Flow direction | Reversible | ||
| Actuating torque | 54 Nm | ||
| Symbol | 991.458 | ||
| Media temperature | -10 °C ... 200 °C | ||
| Note on materials | Contains paint-wetting impairment substances RoHS-compliant | ||
| Material number housing | 1,44 | ||
| Material ball | High-alloy stainless steel | ||
| Material shaft | High-alloy stainless steel | ||
| Product weight | 6.200 g | ||
| Explosion protection | Zone 1 (ATEX) Zone 2 (ATEX) Zone 21 (ATEX) Zone 22 (ATEX) |
| Type of actuation | Mechanical | ||
| Mounting position | optional | ||
| Connection Process valve | Ring housing with threaded flange | ||
| Flange hole pattern | F05 F07 | ||
| Nominal size DN | 50 | ||
| Manual override | None | ||
| Nominal pressure PN | 40 | ||
| Based on standard | EN 1092-1 ISO 5211 | ||
| Medium | Compressed air to ISO 8573-1:2010 [-:-:-] Inert gases Water – no water vapour Neutral fluids Other media on request | ||
| Flow rate Kv | 275 m³/h | ||
| Material housing | High-alloy stainless steel | ||
| Material seals | PTFE PTFE reinforced | ||
| Material number ball | 1,44 | ||
| Material number shaft | 1,44 | ||
| CE mark (see declaration of conformity) | In accordance with EU Pressure Equipment Directive | ||
| Corrosion resistance class CRC | 3 - high corrosion stress |
