1. A system for controlling the flow of fluid associated with a tissue site, comprising: a fluid source configured to supply fluid, a reduced pressure source configured to supply reduced pressure, a first valve in fluid communication with the reduced pressure source, the first valve being made with the ability to move between the open position and the closed position and with the possibility of activation depending on the presence of reduced pressure, the second valve, flow-through communicating with the source of lower pressure, and the second valve is arranged to move between the open position and the closed position and with the possibility of activation depending on the presence of reduced pressure, while at least one of the first valve and the second valve is in the closed position to prevent the flow of liquid at low pressure reservoir connected to the first valve and the second valve and configured to store fluid from a fluid source, a first delivery pipe that is flow-through communicates with the reservoir and is configured to deliver fluid from a fluid source, and a second delivery pipeline that is fluidly connected to the reservoir and configured to deliver fluid from the reservoir to the tissue site. 2. The system according to claim 1, further comprising a line located close to the tissue site and for distributing fluid to the tissue site. The system according to claim 1, in which the first valve moves from an open position to a closed position in the absence of reduced pressure, wherein1. Система для управления потоком жидкости, связанной с участком ткани, содержащая:источник жидкости, выполненный с возможностью подачи жидкости,источник пониженного давления, выполненный с возможностью подачи пониженного давления,первый клапан, проточно сообщающийся с источником пониженного давления, причем первый клапан выполнен с возможностью перемещения между открытым положением и закрытым положением и с возможностью активации в зависимости от наличия пониженного давле