The present invention provides a kind of system, the system can be in succession by two kinds of fluid administrations in a pair of of container (101,102) to patient.The system can have delivery apparatus (11), the delivery apparatus that two valve modules are integrated into single device, and preferably, and there are two check valves and pump communications ports (124,125) for each tool in the valve module.For example, the valve module can share one or more walls and/or one or more rooms each other.Preferably, only outlet in the shell is attached to input pipe, efferent duct and pump connector.Preferably, the system uses single pump (12).By reversing the pumping direction of the pump, liquid can be extracted out from a container or another container in succession.Slit valve (13d) can be used to prevent the free-flowing of fluid for the valve module.
