embodiment of the invention the ball member is formed from a hard chromed stainless steel as can be understood in fig5 when the ball member 42 is in its fully closed position the side sealing lip 52 contacts the seating assembly 36 to provide a fluid tight seal around the ball member as the ball member 42 rotates to an open position an edge surface 68 fig5 that defines the junction between the planar side surface 44 and the side sealing lip 52 contacts the seating assembly 36 to clean the seating assembly of any debris thus in accordance with the present invention the improved quarter turn ball valve includes two sets of parallel side surfaces 44 that are in contact with the valve seats in the fully closed position in the fully closed position the two parallel side surfaces 44 are fully engaged with the valve seats thus providing tight sealing in the full open position the side sealing lips 52 fully cover and protect the valve seats in this manner the two sets of sealing lips 52 provide a wiping or scraping action during opening and closing of the ball valve which cleans the valve seats and avoids buildup further as was shown in fig5 the configuration of the ball member 42 allows debris to be carried around the ball member within the inner cavity 14 thus allowing debris to be discharged freely from the downstream side of the valve in addition to providing.