CareFusion Gravity Set, Model #44000-07 || The CareFusion Gravity Sets are used to administer fluid and medication through a needle or catheter inserted into the patient's artery or vein. The CareFusion Gravity Set is comprised of components commonly found on intravascular administration sets and extension sets. It includes a check valve, injection ports, 4-way stopcock, anti-siphon valve, roller clamp and tubing.