In this work, a methodology was developed with the objective of evaluating the variation of the discharge coefficients provided by commercial houses, with their coefficients obtained experimentally in a demonstration plot. The plot consisted of the power supply unit, the filter, the adduction line, the distribution lines, the selected emitters, analog volume meters and digital sensors to obtain pressure and flow. The plot had two sectors, the first low-pressure sector that operated under gravity and the second, high-pressure, fed by a pump. Nine types of emitters (drippers, micro-sprinklers, sprinklers) were used, including some self-compensating. Using an electronic data acquisition system, pressure and flow are obtained to generate characteristic curves. With the characteristic curves it is possible to determine the discharge equations of the emitters selected for the study. Subsequently, the modeling of the network is carried out using the coefficient and the discharge exponent obtained from each emitter. The results allow to know which of the experienced issuers comply with the technical specifications of the suppliers in the locality.