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118 Posts
June 2008
K-28 #478 pulls into Silverton
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5,727 Posts
Cool video!!
What's the purpose of stepping on the snifter valves? Just to make sure they are operational?
What's the purpose of stepping on the snifter valves? Just to make sure they are operational?
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118 Posts
Not sure, maybe reliving steam pressure off the cylinders while the engine is idle? They did tell me that there is plans to reopen the silver mines next year...........BOOOM!!!!!!!/DesktopModules/NTForums/themes/mls/emoticons/laugh.gif
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yes stepping on the snifter/drifting valves is to release pressure on the valve chests, could also be done on piston valve loco's by opening the cylinder drains. Usually only on D-valves must you open the drifting valves if they do not drop when the cylinder cocks are opened.
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