CHECK VALVE CAPABLE OF CONTROLLING FAST AND SLOW CLOSING BY MEANS OF VARIABLE THROTTLE

摘要

The invention relates to a check valve capable of controlling fast and slow closing by means of a variable throttle and, more particularly, to a check valve capable of controlling fast and slow closing by means of a variable throttle, the valve being operated as a fast closing with high speed at the time of an initial closing of the valve, and then operated as a slow closing with low speed by means of a buffering damper, thereby being capable of preventing water impact as well as noise and vibration.