A piezoelectric actuator is described as including a vibration plate in which grooves associated with respective pressure chambers are formed on a surface of the vibration plate, and a piezoelectric layer on the surface of the vibration plate on an opposite side of a channel unit. The collar includes fasteners for securing the two opposing end portions. A horizontal track member is removably secured to the vertical member and can be adjusted in height on the vertical member to match the height of the pitcher.