Ball valve with cyclic noise reduction, witha threading pin (10) with a spiral spindle groove (11) on the outer surface;a mother (20),which has a continuous interior (21), which extends axially through the mother so that the thread pin (10) can pass through, with a mother roller (22) formed at the inner surface of the interior (22) corresponding to the spindle roller (11), so that the spindle roller (11) and the mother roller roller (22) form a loading channel (23) together, with two mounting holes (241) connected to the interior (21) at the outside of the nut (20);at least one feedback element (30), which has two feet (31), a connecting section (32), which is connected between the upper extremities of the feet (31) and a feedback channel (33) passing through the feet (31) and connecting section (32), with the feedback channel (33) at the bottom of the feet (31) each is an opening (331);at least two noise reduction elements (40),which completely encapsulate the outer surface of the two feet (31) of the feedback element (30), using the two feet (31) of the feedback element (30) in the mounting holes (241) of the mother (20), so that each noise reduction element (40) on the outer surface of each foot (31) and the hole wall of the installation box (24) is located at the junction point of the loading channel (33) and the feedback channel (23), where the feedback channel (33) with the loading channel (23) forms a circulation channel; and a multitude of roller bodies (60),which are arranged in the circulation channel to perform a cyclic roll.
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