List of boiler types, by manufacturer

There have been a vast number of designs of steam boiler, particularly towards the end of the 19th century when the technology was evolving rapidly. A great many of these took the names of their originators or primary manufacturers, rather than a more descriptive name. Some large manufacturers also made boilers of several types. Accordingly, it is difficult to identify their technical aspects from merely their name. This list presents these known, notable names and a brief description of their main characteristics.

See also
  • Glossary of boiler terminology

A
Definitions Points of Interest
  • Admiralty three-drum boiler: the Royal Navy's standardised pattern of three-drum boiler.
  • annular fire-tube boiler: a vertical fire-tube boiler with the tubes arranged radially,[1] such as the Robertson.
  • annular water-tube boiler: a vertical water-tube boiler with the tubes arranged radially, such as the Straker with horizontal tubes, or near-vertically and conically[2] as used by Thornycroft for steam wagons.
  • auxiliary boiler: An auxiliary boiler, on a steam ship, supplies steam that is not used for main propulsion, but is necessary for some part of the essential machinery.[3]
    See also donkey boiler.
    A small boiler may be used as an auxiliary boiler when at sea, or a donkey boiler in port. A composite auxiliary boiler does this, using waste heat from the main engines when at sea, or is separately fired when acting as a donkey boiler. Auxiliary boilers were also present in some locomotives, in particular those used in passenger rail service, where steam was used as heating for the cars being pulled. With the advent of head end power, these steam boilers were phased out, often being replaced with concrete weights.
Thornycroft steam wagon boiler, an annular water-tube with inclined tubes

B
Definitions Points of Interest
  • Babcock-Johnson boiler: early production Johnson boilers operating at high pressures (850 psi [59 bar; 5,900 kPa]) and with water-wall ends to their furnace.[4]
  • Babcock & Wilcox boiler
  • Babcock & Wilcox marine boiler
  • Bagnall boiler: a development of the launch boiler, with an enlarged furnace. Also known in agricultural use as the 'colonial' or 'Britannia'.
  • Belleville boiler: an early marine water-tube boiler developed in France by Julien Belleville.[5]

[6][7]

  • Benson boiler: a monotube "once-through" steam generator.[8]
  • Blake boiler
  • Blechynden boiler: An early naval water-tube boiler.[6][9]
  • Bolsover Express boiler [10]
  • box boiler: An early marine boiler with flat sides. Owing to the flat sides, even with extensive rod stays, the boilers were only suitable for low pressures. These boilers were physically large and contained a few large flues, each heated by its own furnace. The flues were round, rectangular or arched and usually long and labyrinthine.[11]
  • Brotan boiler: a rarely used boiler for steam locomotives that combined a conventional fire-tube boiler barrel with a water-tube firebox. There is a prominent steam drum above the boiler barrel, making it resemble a Flaman boiler.[12][13]
    • Brotan-Deffner boiler: a variant of the Brotan boiler. The steam drum was shortened and placed behind the boiler barrel, giving a much more conventional silhouette. Around a thousand of these were used in Hungary.[12][13]
    • Brotan-Fialovits boiler: a further variant of the Brotan-Deffner boiler.[12]
  • bundled-tube water-tube boiler; early large-tube water-tube boilers where the tubes were grouped into bundles (of 19, for geometrical reasons) that shared a common header, so as to improve shared access for tube cleaning.[14]
  • Butterley boiler: a form of Cornish boiler where the furnace was opened up into a "whistle mouth", enlarging the grate area.
Babcock & Wilcox
Brotan-Defner boiler firebox

C
Definitions Points of Interest
  • Clarke Chapman "Tyne" boiler: a form of vertical water-tube boiler, a development of the cross-tube boiler intended to encourage better water circulation.
  • Clarke Chapman "Victoria" boiler: a form of vertical cross-fire-tube boiler.
  • Clarkson thimble tube boiler[15]: the original thimble-tube boiler, using a great many short closed-ended watertubes. Often used for heat-recovery from the exhaust of large Diesel engines.[16]
  • Climax boiler: A vertical water-tube boiler with many long spiral coils around a central steam-and-water drum.[17]
  • Cochran boiler: a vertical boiler with horizontal fire-tubes.[18]
  • composite boiler: a boiler used for either direct-firing, or as a heat-recovery boiler.[19]
  • Corner tube boiler: a natural circulation water tube boiler in which the pre-separation of steam takes place from the water-steam mixture outside the drum and the preheated downcomers.
  • Cornish boiler: a large horizontal stationary boiler with a single flue.
  • cross-tube boiler: usually a vertical flued boiler with a small number of large water-carrying cross-tubes within the firebox.
The term is also applied to vertical boilers with other arrangements of tubes, such as those with horizontal fire-tubes.
  • Crosti boiler:
section through a Cornish boiler
Vertical flue cross-tube boiler

D
Definitions Points of Interest
  • De Poray boiler: patented French designs with a secondary combustion chamber to improve combustion efficiency. A vertical form of this uses field-tubes.
  • Doble steam-car boiler:
  • donkey boiler: A donkey boiler is used to supply non-essential steam to a ship for 'hotel' services such as heating or lighting when the main boilers are not in steam, for example, when in port.[3] Donkey boilers were also used by the last sailing ships for working winches and anchor capstans.
    See also auxiliary boiler.
  • du Temple boiler: An early naval water-tube boiler, patented in 1876.[6][9][20]
  • Dublin "economic" boiler: a vertical multitubular return fire-tube design, for model engineering-scale uses.[21]
  • Dürr boiler An early naval water-tube boiler, developed and mostly used in Germany, but also trialled in the British HMS Medusa (1888)[22]

E
Definitions Points of Interest
  • egg-ended boiler: an early form of tubular wagon boiler, with hemispherical ends to support higher pressures.
  • Elephant boiler: an early multi-cylindered wagon boiler, popular in France.
  • express boiler: another term for small-tube water-tube boilers, on account of their high ratio between heating surface area and water volume, and thus their rapid steam-raising.
Egg-ended boiler
with (wagon boiler behind)

F
Definitions Points of Interest
  • Fairbairn's five-tube boiler
  • Fairbairn-Beeley boiler, a fire-tube boiler with multiple joined shells of small diameter
  • Fairfield-Johnson boiler: a later form of Johnson boiler operating at lower pressure (450 psi [31 bar; 3,100 kPa] rather than 850 psi [59 bar; 5,900 kPa]), but still a high superheat temperature 825 °F (441 °C).[4]
  • Fairlie boiler: A double-ended locomotive boiler with a central firebox, used in Fairlie's patent for double-ended articulated steam locomotives.
  • field-tube boiler:[23]
  • fire-tube boiler: A boiler with many narrow fire-tubes inside a water drum. A development of the flued boiler, where the many smaller tubes give a much larger heating surface area for the overall boiler volume.
  • Flaman boiler: an attempt to squeeze the largest possible locomotive boiler into the loading gauge by splitting the boiler into two drums: a fire-tube boiler beneath and a steam drum above.[24]
  • flued boiler: A boiler with only one or two large diameter fire-tubes inside a water drum. These later developed into the fire-tube boiler.
  • forced-circulation boiler: boilers where circulation is forced by a pump, rather than relying on thermosyphon effect. These may use either forced-water-circulation (e.g. La Mont) or forced-steam-circulation (e.g. Löffler).[25]
  • Foster-Wheeler boiler
    • D type
    • controlled-superheat type
    • ESD type (External Superheat, D type)
  • Franco-Crosti boiler:
Flaman boiler

G
Definitions Points of Interest
  • Galloway boiler: a Lancashire boiler fitted with Galloway tubes. Originally these fused the Lancashire boiler's original two flues into a single kidney-shaped flue, with the tubes mounted in the joined section. Later boilers kept the cylindrical flues separate and placed the tubes within them.
  • gothic boiler: an early locomotive boiler, where the outer firebox was particularly large and served as the steam dome, often highly decorated with polished brass. These were popular for early railway locomotives, from 1830 to 1850.[26]
This is another form of boiler frequently described as a "haystack".
  • gunboat boiler: similar to the commonly known locomotive boiler, from steam locomotives.
    A horizontal boiler drum contains multiple fire-tubes and a separate furnace. However, the furnace in a gunboat boiler has no opening at the bottom of the furnace to allow dumping of ash; the furnace is completely water-cooled, similar to a Scotch boiler furnace. These boilers were used in early torpedo boats and gunboats, having low height for protection from enemy gunfire.
Galloway boiler

H
Definitions Points of Interest
haystack boiler

I
Definitions Points of Interest

J
Definitions Points of Interest
  • Johnson boiler: one of the first "modern" classes of high-pressure marine oil-fired water-tube boilers. They have a single steam drum above a single water drum. Their small-diameter water-tubes curve outwards on each side to form a cylindrical furnace. As there is no grate or ashpan beneath, firing must be by oil. Return circulation is by external downcomers. Early versions also used water-walls at each end of the furnace, later ones had plain firebrick walls.[4]

K
Definitions Points of Interest
  • Kier: (sometimes Keeve or Kieve) an un-fired boiler, a pressure vessel heated by an external steam supply, used for bleaching in dyeworks and processing paper pulp. In use they were continuously rotated by an engine, steam being supplied through a rotating joint in the axle. They were usually spherical, sometimes cylindrical, and some were recycled from old boiler shells.[31]
  • Kingdom boiler: an uncommon pattern of water-tube boiler.[32]
  • Kewanee Boiler Corporation: Maker of fire tube boilers

L
Definitions Points of Interest
Sometimes small return-tube boilers of just this form are also described as "launch-type".
Lancashire boiler
Locomotive boiler

M
Definitions Points of Interest
monotube boiler (White steam car)
Mumford

N
Definitions Points of Interest
  • Napier boiler: A high-domed low-pressure boiler used on early steamships.[41]
Also known as the "haystack", although not the usual, and even earlier, haystack boiler.[41]
Normand boiler

O
Definitions Points of Interest
  • One Atmosphere Boiler: A compact boiler capable of producing superheated steam to over 1000C at one atmosphere's pressure.[45]

P
Definitions Points of Interest
  • Paris boiler:[46]
  • Paxman "economic" boiler: a form of Scotch boiler, adapted for stationary use and set in a brick surround as an external flue.
  • pistol boiler: a form of small locomotive boiler with a circular firebox, to avoid the need for staying.

R
Definitions Points of Interest
  • Ramzin boiler or 'straight-through boiler': a once-through monotube boiler with a water-wall furnace. It was distinguished from similar boilers, such as the Benson, by its use of near-horizontal tubes in a shallow helix.[47] It was invented by the Russian Leonid Ramzin, whilst imprisoned in a sharashka.
  • Rastrick boiler: a vertical heat-recovery boiler, typically used in ironworks. Owing to the conditions of their use, they acquired a poor reputation for safety and explosions.[48]
  • Reed boiler: An early naval water-tube boiler.[6][9]
  • return-flue boiler: flued boiler with a single large flue that folds back on itself. Used in early steam locomotives.
  • return-tube boiler: fire-tube boiler with multiple small fire-tubes that reverse the direction of gas flow within the boiler. Individual tubes are not folded: there is usually a furnace, a combustion chamber that reverses the flow, then the tubes return from that. The Scotch is a well-known example of this type.
  • Robertson boiler
  • round-topped boilers are a form of locomotive boiler, where the outer wrapper of the firebox is a semi-circular continuation of the cylindrical boiler barrel.
return-flue boiler
Robertson boiler

S
Definitions Points of Interest
Scotch marine boiler

T
Definitions Points of Interest

V
Definitions Points of Interest

W
Definitions Points of Interest

Y
Definitions Points of Interest
Yarrow boiler
Yorkshire steam wagon

References
  1. Harris, Model Boilers, pp. 56–57.
  2. Harris, Model Boilers, p. 55.
  3. Milton, J. H. (1961) [1953]. Marine Steam Boilers (2nd ed.). Newnes. p. 60.
  4. Milton, Marine Steam Boilers, pp. 111-115.
  5. Uri Zelbstein (1987). "L'histoire d'une invention: Julien Belleville et sa chaudière à tubes d'eau". History and Technology, an International Journal (in French). 3 (2): 205–218. doi:10.1080/07341518708581667.
  6. Brassey, Thomas Allnutt (1896). The Naval Annual. Brassey. pp. 118–119. ISBN 1-4212-4178-1.
  7. Brown, David K (2010) [1997]. Warrior to Dreadnought. Chatham. p. 137. ISBN 978-1-84832-086-4.
  8. Milton, Marine Steam Boilers, pp. 144-145.
  9. Brown (1997), p. 140.
  10. Harris, K. N. (1974). Model Boilers and Boilermaking. MAP. pp. 58–59. ISBN 0-85242-377-2.
  11. Rippon, Commander P.M., RN (1998). The evolution of engineering in the Royal Navy. Vol 1: 1827-1939. Spellmount. p. 29. ISBN 0-946771-55-3.CS1 maint: ref=harv (link)
  12. Douglas Self. "Brotan". Loco Locomotive gallery.
  13. "Brotan".
  14. Kennedy, Modern Engines, Vol VI.
  15. "Clarkson Thimble Tube Boiler Co". Grace's Guide. Retrieved 10 April 2018.
  16. Harris, Model Boilers, pp. 58-60.
  17. Kennedy, Modern Engines, Vol V.
  18. Milton, J. H. (1961) [1953]. Marine Steam Boilers (2nd ed.). Newnes. pp. 63–66.
  19. Milton, Marine Steam Boilers, pp. 119–137.
  20. Gardner D. Hiscox (2001) [1904]. 970 Mechanical Appliances and Novelties of Construction. Algrove Publishing. p. 58. ISBN 1-894572-37-8.
  21. Harris, Model Boilers, pp. 160–161.
  22. Brown (1997), p. 165.
  23. Harris, Model Boilers, pp. 52–53.
  24. "Flaman". Loco Locomotive gallery.
  25. Milton, Marine Steam Boilers, pp. 138-145.
  26. Hewison, Boiler Explosions, p. 12.
  27. Harris, Model Boilers, pp. 158–160.
  28. Harris, Model Boilers, pp. 58–59.
  29. Milton, Marine Steam Boilers, p. 59.
  30. Harris, Model Boilers, p. 47.
  31. McEwen, Alan (2009). Historic Steam Boiler Explosions. Sledgehammer Engineering Press. ISBN 978-0-9532725-2-5.
  32. Harris, Model Boilers, pp. 60–61.
  33. Milton, Marine Steam Boilers, pp. 138-141.
  34. "German high-pressure locomotives". Loco Locomotive gallery.
  35. Harris, Model Boilers, pp. 150-151.
  36. Ahrons, E.L. (1966). The British Steam Railway Locomotive. I, to 1925. Ian Allan. p. 351.
  37. Harris, Model Boilers, p. 56–58.
  38. "Monotube steam generator". Light Steam Power. XXIV (3): 157–159. July–September 1975.
  39. "A. G. Mumford". Grace's Guide. Retrieved 20 March 2016.
  40. Kennedy, Rankin (1912). The Book of Modern Engines and Power Generators. V. London: Caxton. pp. 43–45.
  41. Harris, Model Boilers, p. 54.
  42. Harris, Model Boilers, pp. 63,65.
  43. Cisin, Harry G. (1921). Modern Marine Engineering. New York: Van Nostrand. p. 84.
  44. Robertson, Leslie S. Water-tube boilers. p. 38.
  45. "One Atmosphere Boiler - Superheated Steam Boiler". Micropyretics Heaters Industrial.
  46. Harris, Model Boilers, pp. 63–64.
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  48. McEwen, Historic Steam Boiler Explosions.
  49. "Schmidt high-pressure system". Loco Locomotive gallery.
  50. Harris, Model Boilers, pp. 167-168.
  51. Harris, Model Boilers, p. 57.
  52. Harris, Model Boilers, pp. 169-171.
  53. Greenly, Henry (1922). Model Steam Locomotives. Cassell. pp. 52–56.CS1 maint: ref=harv (link)
  54. Milton, Marine Steam Boilers, pp. 130-132.
  55. Hills, Power from Steam, pp. 130–131.
  56. Naval Marine Engineering Practice (1971), pp. 8–10.
  57. Harris, Model Boilers, p. 51.
  58. Milton, Marine Steam Boilers, pp. 143-144.
  59. Stokers Manual ((1912 edition) ed.). Admiralty, via HMSO, via Eyre & Spottiswoode. 1901.
  60. "Thuile". Loco Locomotive gallery.
  61. "Velox locomotive". Loco Locomotive gallery.
  62. Douglas Self. "The Colombian Steam Motor Locomotive". Loco loco gallery.
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  64. Britannica, 1911
  65. Hills, Power from Steam.
  66. Harris, Model Boilers, p. 36.
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