Patent ID: 8591479

Claim:
A gravity-fed emergency eyewash station comprising: a dispensing nozzle; a solution bag containing a sterile eyewash solution; a flow conduit connecting said solution bag and said dispensing nozzle, said solution bag being located above said dispensing nozzle such that head pressure of said sterile eyewash solution within said solution bag creates a gravity-fed flow of said sterile eyewash solution through said flow conduit to said dispensing nozzle; and a flow regulator disposed within said flow conduit to maintain a constant flow rate of said sterile eyewash solution; said flow regulator comprising a valve body and a float, said flow regulator containing a variable air pocket within said valve body, said solution bag containing a volume of sterile air above said sterile eyewash solution, said flow regulator further including an air tube connecting said valve body and said volume of sterile air within said solution bag; whereby said tube is adapted to allow air to flow freely therethrough between said sterile volume of air and said variable air pocket allowing said float to rise and fall with the level of said sterile eyewash solution without introducing outside air.