| Year | 2020 |
| Date | 14-Aug |
| Volume | 225 |
| Issue | 4,645 |
| Page | 278 |
| Category | Locomotive |
| Part | 1 |
| Title | An Improved 'Black 5' Regulator |
| Author | Richard Williams |
| Notes | Converts his 5 inch Gauge 'Black 5' Stroudley regulator to use a process ball valve. Ball valve supplier, background to this project, basic design considerations, scope of work and dismantling, the design |