Double Acting Steam Engine Animation

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An animation of a double acting steam engine. The double acting steam engine has two power strokes per cycle. Steam is admitted to the cylinder by means of a sliding piston valve. This is out of phase with the displacer piston by 90 degrees - this ensures the correct timing of the steam entering into the cylinder. This animation of a double acting steam engine also shows the tubes and supply network of the steam, from the boiler and eventually back to the boiler.