DHR B Class

{{Short description|Class of narrow gauge steam locomotives built for Darjeeling Himalayan Railway}}

{{Infobox locomotive

| name = DHR B Class

| powertype = Steam

| image = DHR 792 with School Train 05-02-23 02.jpeg

| alt =

| caption = No. 792 hauling a school train, 2005

| designer =

| builder = {{ubl|Sharp, Stewart & Co. (12)|North British Locomotive Co. (16)|Baldwin Locomotive Works (3)|DHR Tindharia Works (3)}}

| ordernumber =

| serialnumber =

| buildmodel =

| builddate = 1889–1925

| totalproduction = 34

| rebuilder =

| rebuilddate =

| numberrebuilt =

| whytetype = {{Whyte|0-4-0|ST}}

| uicclass = B n2t

| gauge = {{Track gauge|2ft}}

| driverdiameter = {{convert|26|in|m|3|abbr=on}}

| minimumcurve =

| wheelbase =

| length =

| width =

| height =

| axleload = {{convert|7.75|LT}}

| weightondrivers =

| locoweight = {{convert|14|LT}}

| tenderweight =

| locotenderweight =

| tendertype =

| fueltype =

| fuelcap =

| watercap =

| tendercap =

| sandcap =

| boiler =

| boilerpressure = {{convert|140|psi|MPa|2|abbr=on}}

| feedwaterheater =

| firearea = {{convert|9|sqft|m2|abbr=on}}

| tubearea =

| fluearea =

| tubesandflues =

| fireboxarea =

| totalsurface = {{convert|316|sqft|m2|abbr=on}}

| superheatertype = None

| cylindercount = Two, outside

| cylindersize = {{convert|11|x|14|in|mm|0|abbr=on}}

| valvegear =

| valvetype =

| valvetravel =

| valvelap =

| valvelead =

| transmission =

| maxspeed =

| poweroutput =

| tractiveeffort = {{convert|7750|lbf|kN|2|abbr=on}}

| factorofadhesion =

| trainheating =

| locobrakes =

| locobrakeforce =

| trainbrakes =

| safety =

| operator = {{ubl|Darjeeling Himalayan Railway|→ Indian Railways}}

| operatorclass = B

| powerclass =

| numinclass =

| fleetnumbers = {{ubl|DHR: 17–30, 32–36, 39–53|All-India: 777–806}}

| officialname =

| nicknames =

| axleloadclass =

| locale =

| deliverydate =

| firstrundate =

| lastrundate =

| retiredate =

| withdrawndate =

| preservedunits =

| restoredate =

| scrapdate =

| currentowner =

| disposition = Some still in service

| notes = {{sfn|Hughes|1994|p=34}}{{sfn|Marshall|2001|pp=60–61}}

}}File:Darjeeling train in shed. 1979.jpg

The DHR B Class is a class of {{Track gauge|2ft}} gauge {{Whyte|0-4-0|ST}} saddle tank steam locomotives used on the Darjeeling Himalayan Railway (DHR) in West Bengal, India.{{sfn|Hughes|1994|p=34}}{{sfn|Marshall|2001|p=60}}