| Year | 1980 |
| Date | 01-Aug |
| Volume | 146 |
| Issue | 3,638 |
| Page | 942 |
| Category | Nautical |
| Part | 2 |
| Title | Marine Model Engineering |
| Author | D.G.Gordon |
| Notes | Reducing valve, arrangement of control valves, boiler pressure controlled gas valves, main burner, pilot burner, boiler |