| Year | 1993 |
| Date | 17-Dec |
| Volume | 171 |
| Issue | 3,959 |
| Page | 766 |
| Category | Pump |
| Part | 7 |
| Title | Southworth Duplex Boiler Feed Pump |
| Author | John Bertinat |
| Notes | Describes the remaining components, final assembly and testing. Glands, pistons and piston rods, drive blocks and stays, valve chest details |