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London & North Western Railway Society
Glossary for the LNWR Society

Glossary Results for Word "Displacement Lubricator"

Displacement Lubricator A displacement lubricator works by admitting steam into the oil reservoir; the steam condenses and sinks to the bottom of the oil. As the condensate gathers, the oil is forced back down the steam pipe to the valve chest, cylinders, etc. Displacement lubricators work at steam pressure, so taps are fitted so that the oil can be replenished while the loco is in steam. They were often of polished bronze.