Abstract: The invention discloses a pressure balanced mixing device comprising a balanced module including a fixed tube and a movable element including a cylinder which connects with two cups and is between the two cups blocking a cold-water inlet and a hot-water inlet of the fixed tube, wherein each cup has an opening and a base plate, each opening is in communication with a cold-water outlet and a hot-water outlet of the fixed tube. The cylinder has two side walls and two connecting rods. One of the two side walls is separated from the base plate of one of the two cups by a cold-water space, the other side wall is separated from the base plate of the other cup by a hot-water space. The cold-water space and the hot-water space are in communication with the cold-water inlet and the hot-water inlet of the fixed tube, respectively.

Abstract: The invention discloses a pressure balanced mixing valve comprising a balanced device including a fixed tube and a movable element including a cylinder which connects with two cups and is between the two cups blocking a cold-water inlet and a hot-water inlet of the fixed tube, wherein each cup has an opening and a base plate, each opening is in communication with a cold-water outlet and a hot-water outlet of the fixed tube. The cylinder has two side walls and two connecting rods. One of the two side walls is separated from the base plate of one of the two cups by a cold-water space, the other side wall is separated from the base plate of the other cup by a hot-water space. The cold-water space and the hot-water space is in communication with the cold-water inlet and the hot-water inlet of the fixed tube, respectively.