Knew there was something odd about them
There's 3 cocks on them
1) Ingoing
found in the Boiler Compartment No 2 End on the
Secondmans side just inside the engine room door on the left
by the CO2 bott
2) Outgoing
continue into Engine Comp and turn right and should be just before the
Battery Isol Switch
3) Equipment
Stand by B.I.S and look towards No2 cab, and it's in the Elec cupboard
in front of you, usually low down and against the cupboard front side
Hope this will help