The invention relates to a diversion which can be used under load conditions in a fluid distribution system without interrupting the fluid supply or installing a by pass. The diversions consists of a body that is formed by two complementary components including an upper component comprising openings which are oriented transversely to the direction of the pipe to be cut off, which are equipped with seals and which are designed such as to enable the insertion and passage of a cutting blade that is associated with an external guillotine. The aforementioned upper component comprises an inner collar or flange which can be coupled and secured to the pipe segment to be cut off, said collar or flange being joined to a threaded longitudinal element which extends externally and which is used to remove the cut-off pipe segment. The invention also includes elements for sealing the openings once the cutting operations have been performed and the guillotine has been removed.