Blackburn airtower 3 track pumpthe blackburn airtower 3 track pump construction consists of a steel barrel and welded base attaching to the valve is simple using the anyvalve pump head which automatically detects and adjusts accordingly between dunlop presta and schrader valves the airtower 3 with its rugged design can withstand knocks whilst pressure reading is easy via the diaphragm type gauge the ergonomically designed t handle offers a handy storage compartment at both ends for storing