Self-inflating tire assembly

A self-inflating tire assembly (10) is disclosed. It comprises a tire (12) having a tire cavity (30), first and second sidewalls (32) extending respectively from first and second tire bead regions (34) to a tire tread region (38), a passageway (43) in the tire (12), and a pump (41, 100, 210) positioned in the passageway (43). The pump (41, 100, 210) includes a tube (60) and a plurality of check valves (45, 50) mounted in the tube (60) and spaced apart from each other and forming a plurality of tube segments (110). The tube (60) has a first end in fluid communication with the atmosphere, and a second end in fluid communication with the tire cavity (30).