Y-set, a device composed of plastic components, used for delivering IV fluids through a primary IV line connected to a combination drip chamber filter section from which two separate plastic tubes lead to fluid sources. The Y-set also includes three clamps, one for the primary IV line and one for each of the two separate tubes. It is often used to transfuse blood cells for any type of blood administration that must be diluted with saline solution to decrease their viscosity. In such a transfusion one of the tubes is connected to the container of blood cells. The other tube is connected to the container of saline solution. Also called Y-tubing. Compare component drip set, component syringe set, microaggregate recipient set, straight line blood set.