Patent ID: 11857994
Assignee: nan
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B  F

Claim 9:
10. A crossover prevention valve for a multi-component fluid mixing and dispensing system, said crossover prevention valve comprising:
a valve body having a forward body surface, a rearward body surface spaced from said forward body surface, and a perimeter body surface directly connecting said forward and rearward body surfaces, wherein said forward body surface is configured to define a portion of a fluid mixing chamber, and wherein said perimeter body surface of said valve body is configured to sealingly and releasably engage an inner wall portion of a dispensing nozzle that defines a forward portion of said fluid mixing chamber;
first and second fluid passageways extending through said valve body, each of said first and second fluid passageways including an inlet proximate said rearward body surface and an outlet proximate said forward body surface; and
first and second valves positioned at respective ones of said outlets of said first and second fluid passageways;
wherein said first and second valves are operable to permit fluid flow through respective ones of said first and second fluid passageways in response to an elevated fluid pressure in said first and second fluid passageways relative to a fluid pressure in an area forward of said forward body surface; and
wherein said first and second valves are operable to prevent fluid flow through respective ones of said first and second fluid passageways in response to equal or elevated fluid pressure in the area forward of said forward body surface relative to a fluid pressure in said first and second fluid passageways.