VALVE ELEMENT FOR POPPET VALVE

摘要

PROBLEM TO BE SOLVED: To manufacture a poppet valve applied to an engine and a compresser as a suction and a discharge valve by press-forming instead of a usual forged part. SOLUTION: A cone-shaped seating face 21a provided on a peripheral edge; a hollow stem 22; and a bevel part 21 having an about cone-shaped skirt part 21 between the two parts 21a, 22 are unitedly formed by the plastic forming with a steel plate, and the stem is also hollowly formed for reducing the inertial weight of a valve system.