Abstract: A valve assembly and mounting cup combination which comprises a mounting cup having an exterior, outwardly facing surface and an interior, inwardly facing surface, and a perimeter curl for attaching the mounting cup to a desired rim of a container. The mounting cup includes a pedestal portion with a conically-shaped top surface having a centrally located aperture formed therein and a gasket is disposed within the pedestal portion between an undersurface of the pedestal portion and a valve assembly. The valve assembly comprises a valve body, a valve stem with a base, and a spring. The assembly is disposed in and retained by the pedestal portion, via a conventional crimping process, with a product outlet carried by the valve stem and protruding through the aperture in the gasket and the central aperture. The spring biases the valve base against the gasket to form a seal therebetween.

Abstract: A valve having a valve body, defining a longitudinal axis, with a circular side wall extending down beyond a floor of the body to define a socket. Into this socket is frictionally engaged an appendage having a circular upper end and a nipple at its lower end. The appendage is partitioned into a primary product passage, communicating with a product outlet extending through the floor of the valve body, and a ball chamber, the lower of which is provided with a valve seat with a bypass opening communicating with the primary product passage. A ball chamber passage is formed in the ball chamber above the valve seat and a ball is normally seated, via gravity, on the valve seat when the container is in a normal upright position. When the container is inverted, the ball drops away from the seat and permits passage of product through the ball chamber passage, through the bypass opening into the primary product passage and up into the valve body for discharge.