Ball valve for use in cooling tower of cooling system, has filter element attached inside throughflow opening of ball cock plug

摘要

The ball valve has a filter element (3) attached inside a throughflow opening of the ball cock plug (4). The method is implemented for half or complete automatic cleaning of the filter element by a clean blowing of a compressed-air or by cleaning the medium over a nozzle in the interior of throughflow opening of the ball cock plug (2) and by the discharge units (13,15). The impurities flung towards exterior of the throughflow opening of the ball cock plug are either evacuated or permeated.