Duplex and A182 F51 valves and their use.
We manufacture valves in duplex stainless steel, particularly for use in desalination and sea-water-related processes.
Duplex material specification and equivalents
| Forged | A182 F51 |
| Cast designation up to 1998 | A890 Gr. 4A |
| Cast designation since 1998 | A995 Gr. 4A (Supercedes A890) |
| ASTM specification | A351 CD3MN |
| European (DIN) Werkstoff number | 1.4462 |
| Unified Numbering System (UNS) | S31802 and S33205 |
| Type | 22Cr5Ni3MoN |
| Other designations | Duplex SAF 2205 |
