Responsiveness to auditory and visual components of a sounding/moving com-pound in human infants

A valve particularly adapted to be used in the bottom of a tank and particularly desirable for use in connection with food products because of the ease with which it may be disassembled and cleaned can be constructed utilizing a two part cylindrical housing having an inlet opening in one end of the housing. A movable poppet is located within the housing in such a manner that a handle attached to the poppet body and extending out through a diagonal slot in the housing may be moved in the slot so as to move a poppet head serving as a valve closure with respect to this inlet opening. Seals are carried by the poppet body so as to engage the interior of the housing in order to prevent leakage out around the handle.