Abstract: A switch valve includes a valve body, a control stem rotatably mounted on the valve body, a limit ring mounted on the valve body, a locking member secured on the control stem and hidden in the limit ring, and a rotation head removably mounted on the limit ring and detachably engaged with the locking member. Thus, the locking member is only rotated by rotation of the rotation head to rotate the control stem so as to open/close the water flow in the valve body, so that the switch valve has a locking effect, thereby preventing the switch valve from being opened by a person intentionally.

Abstract: A switch valve includes a valve body, a control stem rotatably mounted on the valve body to open/close a water flow in the valve body, a limit ring mounted on the valve body to encompass the control stem, and a rotation head removably mounted on the limit ring and detachably engaged with the control stem for rotating the control stem. Thus, the distal end of the control stem is only rotated by rotation of the rotation head to rotate the control stem so as to open/close the water flow in the valve body, so that the switch valve has a locking effect, thereby preventing the switch valve from being opened by a person intentionally.

Abstract: A control valve includes a valve seat, a control switch, and at least one leakproof ring. Thus, when the control valve is disposed at a closed state, the water inlet or the water outlet of the valve seat is stopped by the leakproof groove of the control switch and is sealed closely by the leakproof ring, thereby enhancing the leakproof effect of the control valve.

Abstract: A structure is designed to switch the flow of fluid in a fluid conveying system. The structure includes two fluid-discharging pipes connected one to end, a valve slot formed at the juncture of the two fluid-discharging pipes, a fluid-admitting pipe fastened to the valve slot, and a ball valve rotatably disposed in the valve slot such that the ball valve can be turned by a valve knob to control the flow of fluid into the two fluid-discharging pipes from the fluid-admitting pipe.

Abstract: A valve knob is provided with a first confinement slot and a second confinement slot symmetrical to the first confinement slot. Both confinement slots have a first stop wall and a second stop wall to facilitate the confining of the valve knob at ON position and OFF position in conjunction with an arresting block of the valve body.