Unsteamed in some years when it came to us, the boiler has had recent hydraulic and steam tests, with new certification issued. On the track it ran well, free-steaming and responsive to the regulator - there's some video of it on our YouTube channel here.
Boiler feed is by injector and axle pump - the mechanical pump well-sized for the job, keeping up with demand whilst not drowning the boiler. There is a second injector fitted with steam feed, although not piped up for delivery.
There is a driver's brake valve and vacuum gauge fitted, apparently the start of a project to fit vacuum brake equipment - it would require some pipework and an ejector to complete.
| gauge | 7 1/4 inch |
| length/inches | 39 |
| width/inches | 13 |
| height/inches | 18 |
| wheel material | cast iron |
| axlebox type | plain bearing |
| cylinder material | gunmetal |
| valve type | slide |
| valve gear | Stephensons |
| reverser type | pole |
| lubricator type | mechanical |
| injector(s) | 1 |
| boiler number | 717-251 |
| year built | 1979 |
| CE mark | n/a - pre-2002 |
| working pressure/psi | 90 |
| boiler type | locomotive |
| boiler material | copper |
| boiler construction | silver soldered |
| hydraulic test valid to | 24/Oct/26 |
| steam test valid to | 24/Dec/23 |
| superheater(s) | 2 |
| superheater type | radiant |
| safety valve(s) | 2 |
| safety valve type | spring |
| mechanical pump | 1 |
| hand pump | 1 |
| whistle | yes |