| Powertype: | Steam |
| GWR 4400 Class | |
| Designer: | George Jackson Churchward |
| Builddate: | 1905–1906, 1914 |
| Totalproduction: | 11 |
| Whytetype: | 2-6-2T |
| Leadingdiameter: | 3feet |
| Driverdiameter: | 4feet |
| Trailingdiameter: | 3feet |
| Length: | 36feet |
| Width: | 8feet |
| Height: | 12feet |
| Locoweight: | 56lcwt13lcwt (56LT) |
| Fueltype: | Coal |
| Fuelcap: | Originally: Later: |
| Watercap: | 1000impgal |
| Cylindercount: | Two, outside |
| Cylindersize: | 17x |
| Boilertype: | Standard 5[1] |
| Boilerpressure: | 1802NaN2 |
| Tractiveeffort: | 214402NaN2 |
| Locale: | Western Region |
| Withdrawndate: | December 1949 – September 1955 |
| Disposition: | All scrapped |
| Notes: | Sources for technical data: [2] |
The Great Western Railway (GWR) 4400 Class was a class of 2-6-2T side tank steam locomotive.
They were introduced in 1904 for work on small branch lines. The 4500 class was a later development with larger driving wheels. The 4400s were particularly used in hilly districts, notably the Princetown and Much Wenlock Branches.[2] All were withdrawn and scrapped between 1949 and 1955.[2]
The 4400, 4500 and 4575 classes, which all had 24inches stroke cylinders, the Standard 5 boiler and driving wheels under 5feet, were collectively known as "Small Prairies", as opposed to the 5100, 3150, 5101, 6100, 3100 and 8100 classes, with 30inches stroke cylinders, Standard 2 or 4 boilers and driving wheels over 5feet, known as "Large Prairies".