To provide a valve ball receiver for valves of a diaphragm pump capable of preventing the valves from being inoperative even if sand-containing paint is used for a long period.

This valve ball receiver 1 comprises a tubular side wall part 2 used for the valves of the diaphragm pump using spherical valve balls as valve elements and a valve locking part 3 having a circular opening 5 formed at the downstream side end of the side wall part 2 and axially passing through the center part thereof and a plurality of small holes 4 axially passing through the peripheral edge of the opening part 5.