GWR 2221 Class

GWR 2221 "County Tank" Class[1]
2221 in 1907
Type and origin Power type Steam Designer George Jackson Churchward Builder Swindon Works Order number Lots 151, 175, 188 Serial number 2076–2085, 2320–2329, 2466–2475 Build date 1905–1909, 1912 Total produced 30
Specifications Configuration: ​  • Whyte 4-4-2T  • UIC 2′B1 ht Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Driver dia. 6 ft 8+1⁄2 in (2.045 m) Fuel type Coal Firebox: ​  • Grate area 20.35 sq ft (1.89 m2) Boiler: ​  • Type GWR Standard No. 2 Boiler pressure 200 lbf/in2 (1.38 MPa) Heating surface: ​  • Firebox 121.31 sq ft (11.27 m2)  • Tubes and flues 1,396.58 sq ft (129.75 m2)  • Total surface 1,517.89 sq ft (141.02 m2) Superheater: ​  • Heating area 184.75 sq ft (17.164 m2) Cylinders Two, outside Cylinder size 18 in × 30 in (457 mm × 762 mm)
Performance figures Tractive effort 20,530 lbf (91.32 kN)
Career Operators Great Western Railway Numbers 2221–2250 Withdrawn 1931–1934 Disposition All scrapped

The Great Western Railway (GWR) 2221 Class or County Tank was a class of 4-4-2T steam locomotive, effectively a tank engine version of the 3800 "County" Class 4-4-0 tender locomotives. The two classes had different boilers, standard no 4 for the tender locomotive, and the smaller (by about 350 sq ft or 33 m²) standard no 2 for the tank. 2230 was fitted with the larger boiler when new, but this was unsuccessful and was quickly altered.^[2]