Editing GNRI Class V (section)

{{Short description|Class of three-cylinder compound locomotives}}
{{Use dmy dates|date=March 2025}}
{{Use British English|date=April 2017}}
{{Infobox locomotive
|name= Great Northern Railway (Ireland) Class V
|powertype= steam
|image= Steam Train approaching Peter's Bridge - geograph.org.uk - 344126.jpg
|caption= 85 ''Merlin'' approaches Peter's Bridge, County Down on 18 June 2004
|designer= George Glover
|builder= [[Beyer, Peacock & Company]]<ref name=Kelly>{{harvnb|Kelly|1993|p=44}}</ref>
|serialnumber= 6731–6735
|ordernumber= 1524
|builddate= 1932<ref name=Kelly/>
|whytetype= [[4-4-0]]<ref name=Kelly/>
|uicclass= 2′B h3v
|gauge= {{RailGauge|5ft3in}}
|totalproduction= 5<ref name=Kelly/>
|cylindercount= Three – 1 HP (inside) and 2 LP (outside)<ref name=Kelly/>
|hpcylindersize= {{convert|17+1/4|×|26|in|mm|0|abbr=on}}<ref name=Kelly/>
|lpcylindersize= {{convert|19|×|26|in|mm|0|abbr=on}}<ref name=Kelly/>
|boilerpressure= {{convert|250|psi|MPa|2|abbr=on|lk=on}},<br> ''later'' {{convert|215|psi|MPa|2|abbr=on}}<ref name=Kelly/>
|tractiveeffort= {{convert|23762|lbf|kN|2|abbr=on|lk=on}},<br>''later'' {{convert|20435|lbf|kN|2|abbr=on}}<ref name=Kelly/>
|locotenderweight= {{Long ton|103|11| | |}}
|valvegear= [[Stephenson valve gear|Stephenson]]
|driverdiameter= {{convert|6|ft|7|in|m|3|abbr=on}}<ref name=Kelly/>
|operator= {{ubl|[[Great Northern Railway (Ireland)]] |[[Ulster Transport Authority]] |[[CIÉ]]}}
|operatorclass= V
|fleetnumbers= 83–87<ref name=Kelly/>
|nicknames= ''Pounders''; ''Compounds''
|retiredate= 1959–1963
|preservedunits= No. 85 ''Merlin''
|disposition= One preserved, four scrapped
}}

The '''Great Northern Railway V class''' steam locomotives were [[4-4-0]] three-cylinder [[compound locomotive]]s built in 1932 by [[Beyer, Peacock & Company]] for the [[Great Northern Railway (Ireland)]].