A distribution device to distribute a product on a surface, such as agricultural land is provided that includes at least one distribution ramp element and a product distribution circuit. The distribution circuit includes an input port in fluid communication with a product source and a plurality of nozzles fluidly linked in series. The distribution nozzles are disposed along the distribution ramp element and linked to the input port. Each distribution nozzle presents a pressure value. A pressure controller configured to equalize the pressure values of each nozzle is proved to control the pressure of the product along the distribution ramp element. The pressure controller includes a first control member and a second control member, each of the first and second pressure control members being linked in series to the plurality of nozzles and to the input port. The nozzles are disposed between the first and second control members.
