Container and cap assembly

A fluid delivery system for selectively dispensing a material comprising:

• a container comprising a top wall in which an opening is formed, a bottom wall, and at least one container side wall extending between the top wall and the bottom wall defining a cavity for storing the material;
• a surface cleaning apparatus comprising a receiver configured to couple with the container, the receiver comprising at least one receiver fluid inlet, at least one receiver fluid outlet and a locking mechanism;
• and
• a cap received on the opening in the top wall of the container to close the opening and comprising:
• an end face having at least one cap fluid inlet and at least one cap fluid outlet;
• and
• a side wall extending from the end face and having at least a first retaining element provided on an exterior surface of the side wall and configured to engage the locking mechanism on the receiver;
• and
• an air pump fluidly coupled with the receiver to selectively deliver air to the at least one receiver fluid outlet;
• wherein, when the cap is coupled with the receiver such that the at least one cap fluid outlet is aligned with the at least one receiver fluid inlet and the at least one cap fluid inlet is aligned with the at least one receiver fluid outlet, the air pump is configured to selectively deliver air into the cavity through the at least one receiver fluid outlet and the at least one cap fluid inlet to pressurize the cavity to displace at least a portion of the material through the opening, the at least one cap fluid outlet and the at least one receiver fluid inlet to dispense the material stored within the container.