| Year | 2021 |
| Date | 04-Jun |
| Volume | 226 |
| Issue | 4,666 |
| Page | 755 |
| Category | Steam |
| Part | |
| Title | Steam Regulator |
| Author | David Fulton |
| Notes | Presents a regulator valve with a finely graduated opening and decisive shut-off. The valve, regulator body, centre part, spindle, cap nut and bottom nut, grinding-in |