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This paper treats the experimental research of the erosion of the poppet valve chamber by changing the configuration of the poppet valves and seats and the pressure of the poppet valve chamber.As the result of the experiment, the following became clear: 1) The erosion in the valve chamber is the result of the cavitation and jet. 2) There occur extreamly erosion in the case of the diverging flow than parallel and converging flow. 3) Erosion has its maximum value against the back pressure, and at this time the noise level becomes maximum. 4) Ersion of the valve chamber become small according to an increase in the diameter of the valve chamber. 5) Effective and simple preventive measure of the erosion is presented.

EROSION OF POPPET VALVE CHAMBER BYHIGH WATER CONTENT FLUID