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Sleeve valve closeup from a Bristol Centaurus Mark 175.
Sleeve valve closeup from a Bristol Centaurus Mark 175.
Bristol Perseus
Bristol Perseus
Knight sleeve-valve engine
Knight sleeve-valve engine
Argyll single sleeve valve
Argyll single sleeve valve
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Overhead camshaft engine
Overhead camshaft engine
Oscillating poppet valve on one of Chapelon's rebuilt 4-6-2 locomotives.
Oscillating poppet valve on one of Chapelon's rebuilt 4-6-2 locomotives.
Image: Poppetvalve
Image: Poppetvalve