Abstract: A mixing valve for mixing steam and water comprising an inlet chamber for steam, an inlet chamber for water, and a mixing chamber for mixing the steam and the water. The mixing chamber has at least one outlet connected thereto. A valve member arranged in the steam inlet chamber is coupled to a diaphragm. The valve is responsive to pressure differentials in the water inlet chamber, and is utilized to control steam flow from the steam inlet chamber to the mixing chamber. The mixing valve includes an internal partition between the steam inlet chamber and the water inlet chamber. The internal partition includes a thermal break that minimizes the contact between the steam inlet chamber and the water inlet chamber, thus minimizing the heat transfer therebetween.

Abstract: A tennis teaching device for teaching the proper wrist position during the stroke of a tennis racket. The tennis teaching device comprises an elongated strap which is removably attached at a first end to the throat portion of a tennis racket. An attaching member removably attaches the second end of the strap to the forearm of the player. The second end of the strap is disposed at a predetermined upward extending angle and rotated a predetermined angular amount about the center axis of the strap with respect to the first end so as to be in registry with the forearm and wrist of the player when attached thereto to hold the wrist of the player in a fixed position throughout the entire stroke of the racket.