A peristaltic pump comprising a casing defining a tube race, a flexible tube disposed in said tube race, and a rotor with one or more rollers adapted to act against the flexible tube, in which the casing comprises a first section comprising said tube race and a first part of fitting means, and a second section comprising said rotor and a second part of said fitting means, in which the first and second parts of said fitting means are a releasable snap-fit together.
