MULTIRATE TUBING FLOW RESTRICTOR

摘要

A flow control valve for medical liquid is disclosed. A plurality of flow restrictors (54 a - c) are located in the flow path to define a plurality of flow streams of differing flow rates. A flow control member (48) is disposed in the flow path, and has a plurality of discrete apertures in a first region or plane and at least one aperture in a second region or plane spaced apart from the first plane. The flow control member may be rotated between a first position in which one of the plurality of apertures in the first plane is in communication with one of the flow streams to define a first flow rate through the valve, and a second position in which one of the at least one aperture in the second plane is in communication with a different one of the flow streams to define a second flow rate through the valve different from the first flow rate.