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Overhead Valve Single Compressed Air Model Engine Steam
Duration: 2:00
3/4" Bore, 7/8" Stroke, cam driven, pushrod operated overhead ballbearing valve with slave ballbearing valve for exhaust. Air pressure into the engine is controlled by the single overhead ballbearing valve. The exhaust valve, also a ball bearing is actuated by the incoming pressure when the inlet valve is opened. As long as the inlet valve is held open, the exhaust valve will held closed by the inlet air pressure. As long as the inlet valve is closed, the exhaust valve will be held open by an exhaust valve spring.