Dual-propulsion Working Principle Demonstration – This professional steam engine physics experiment equipment adopts a premium dual-propulsion structure design. By adjusting the steam reversing valve, it realizes alternating air intake at both ends of the cylinder, which continuously pushes the piston to reciprocate and output power. Full-transparent Visual Observation Design – Featured with high-quality transparent plastic cylinder and steam chamber, this teaching tool achieves dead-angle- full-view observation. Users can clearly watch the whole operating process of piston movement, steam circulation and reversing valve switching. Complete Standard Experimental Structure – This physical science experiment model is assembled with complete standard components, including cylinder, piston, steam chamber, steam flow reversing valve, crank connecting rod mechanism, cast iron flywheel, sturdy bracket and stable bottom plate. Adjustable Operating Speed & Stable Operation – Equipped with a professional steam Durable & Widely Applicable Teaching Aid – Adopting wear-resistant cast iron flywheel and high-strength transparent plastic materials, this steam engine demonstration model features solid structure and stable performance.