(EN) NOVEL VALVE EMPLOYING HYDROPHOBIC AND HYDROPHILIC MEMBRANES Abstract of the Disclosure A novel valve employing hydrophobic and hydro- philic membranes and providing a combined air barrier and liquid sequencing valve. The novel valve is useful in gravitational flow systems and equipment sets for the se- quential administration of medical liquids, wherein a pri- mary liquid can be administered at a flow rate independent of the flow rate of a secondary liquid, and includes bar- riers substantially impervious to air to prevent the inad- vertent administration of air when the liquids are de- pleted.
