A holder for a curved duct portion of a tube pump. The holder includes a supply-side connector which includes a first cavity and a first plate connected together, the first cavity being adapted for receiving an end of the curved duct portion, and a discharge-side connector including a second cavity and a second plate connected together, the second cavity being adapted for receiving another end of the curved duct portion, where the connectors are movable the one with respect to the other between a storage configuration, in which the supply-side connector is positioned away to the discharge-side connector, and an operating configuration, in which the supply-side connector is close to the discharge-side connector and in which the first and second plate are engaged together substantially on a same plane.