351980/351981/351982/351983/351984/351985/351986/351987/351988/351989/351990/351991
| CODE | Nom. Size (inch) | Nom. Size (mm) |
| 351980 | 1/2 | 13 |
| 351981 | 3/4 | 20 |
| 351982 | 1 | 25 |
| 351983 | 1-1/4 | 32 |
| 351984 | 1-1/2 | 40 |
| 351985 | 2 | 50 |
| 351986 | 2-1/2 | 65 |
| 351987 | 3 | 80 |
| 351988 | 4 | 100 |
| 351989 | 5 | 125 |
| 351990 | 6 | 150 |
| 351991 | 8 | 200 |
