Abstract: A water purification core valve includes a shell having a top opening and a bottom opening. A cam bushing, a cam, a movable tile and a stationary tile are mounted inside the shell. A central portion of the cam is pivotally mounted to the cam bushing and a top portion protrudes beyond the top opening of the shell and is connected to a handle. The movable tile has a cam opening formed through the movable tile for the bottom portion of the cam to be inserted therein. Five water paths formed through the stationary tile and the movable tile and are respectively connected with three water inputs and two water outputs. The water purification core valve is operated by pivoting the handle to align the water paths to corresponding water supply, thereby fulfilling control over three ways of water input and two ways of water output.

Abstract: A fast detachable pipe connector includes a first pipe connector, and a second pipe connector inserted into the first pipe connector. In a center of the first pipe connector is provided with a first ring shape slot, while in the first ring shape slot is provided with an elastic ring having indention. On a bottom portion of the first ring shape slot is provided with an opening in communication with interior of the first pipe connector. On the elastic ring is provided with a barrier block extending from the opening to interior of the first pipe connector, and a handle is provided near the opening of the elastic ring. The fast detachable pipe connector is simple in construction, optimized in design, so that its installation and detachment can be achieved easily and swiftly.