The microtube are emitters of small diameter and there has recently been developed a new type of microtube called of microtube with multiple outputs (MMO) and consists of a pressure regulator microtube attached to a connector with radial arrangement from where are derived six emitters microtubes. The microtubes are highly susceptible to clogging because of its small diameter. The aim of this study was to evaluate the sensitivity of the microtubes to obstruction by physical agents. We used the methodology proposed by Institut National de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture (IRSTEA) to evaluate the sensitivity of the microtubes to obstruction. In addition, we used the computational program ANSYS Fluent for better visualization of areas more conducive to obstruction of the MMO. Microtubes were assayed with a diameter of 1.074 mm and microtubes with multiple outlets operating with inlet pressure of 5 m. The MMO is less sensitive to clogging than the individual microtubes with internal diameters of 1.074 mm. The use of ANSYS Fluent program identified critical areas in the connector that can contribute to the obstruction of the emitter.