Patent ID: 7726630

Claim:
A flow-directing vessel for installation into an interfacing cavity having a cylindrical wall with a threaded portion, a supply passage located below the threaded portion, and a delivery passage located below the threaded portion; the vessel comprising a sleeve, a plunger movable relative to the sleeve, a cup fixedly attached to the sleeve, and a capsule fixedly attached to the cup; the sleeve having a threaded portion for mating with the threaded wall of the interfacing cavity to connect the vessel to the interfacing cavity, the cup having a U-shape cross-section formed by radially spaced apart inner and outer walls, and an upper axial wall extending between and connecting the inner and outer walls, the upper axial wall including at least one opening, wherein the inner and outer walls and the upper axial wall define a chamber that opens downwardly for communication with the supply passage; the capsule comprising an orifice in communication with the at least one opening in the upper axial wall, an exit for communication with the delivery passage, and a passageway from the orifice to the exit; the plunger sealing and unsealing the orifice to thereby seal and unseal the passageway from the orifice to the exit such that when the passageway is unsealed, fluid from the supply passage can enter the chamber and pass through the at least one opening in the upper axial wall to the orifice and then through the orifice into the passageway to the exit.