Abstract: The invention relates to the means provided in a peristaltic pump to regulate the radial distance between a crushing roller and the axle of rotation of the rotor.The rotor comprises at least one reference face parallel to its axle of rotation, the regulating element being a support of the axle of rotation of the roller provided with a surface which is held in contact with the face of the rotor, whereas a plurality of orifices are provided in the rotor and one orifice is provided in the support and is designed to be placed over one of the orifices of said plurality by moving the support along the said face and surface and to receive a connecting member traversing them.The invention finds an application in peristaltic pumps.

Abstract: Deformable flexible tube constituting the body of a peristaltic pump having a stator and a rotor equipped with rollers progressively compressing the tube against the stator, said tube comprising two ribs extending along the length of the tube at points on the circumferential surface located on the same side of the line of contact of the inner walls when the tube is compressed, and symmetrical with respect to a plane perpendicular to this line of contact.