Embodiments of a fluid flow regulating device and methods of using the same are described. Certain embodiments manages fluid flow between one or more input ports and output ports at least partly in response to fluid pressure changes and/or by a mechanism driven by fluid flow, optionally without using electrical power.

A two-route switching water output system includes a water input converter and a water output device. The water input converter includes a water input valve body and a valve cock. In the water input valve body is provided with a first water input route and a second water input route. One of the first water input route and the second water input route is selected to open or close through the valve cock. The water output device includes a water output valve body and a control valve core. Inside the water output valve body is provided with a first water output route and a second water output route. The first water input route and the first water output route are connected to form a first water route. The second water input route and the second water output route are connected to form a second water route.

A new type water output converter includes: a valve body, and a valve sleeve. Wherein, in the valve body is provided with a first water route and a second water route. One of which is switched to open or close through using the valve sleeve. The water output of the second water route is controlled through an outside connected switch. The position of the valve sleeve is adjusted by the outside connected switch through feedback of water pressure in the second water route. When the outside connected switch is switched off, the valve sleeve is pushed to move upward by the water pressure in the second water route, to open the first water route. When the outside connected switch is switched on, the valve sleeve is pushed to move downward by the water pressure in the first water route, to close the first water route.

A water output converter includes a valve body and a valve cock. In the valve body is provided with a first water route and a second water route, while one of the two routes is switched to open or close through the valve cock. Water output of the second water route is controlled through an outside connected switch. The position of the valve cock is adjusted by the outside connected switch through feedback of water pressure in the second water route. When the outside connected switch is switched off, the valve cock is pushed to move upward by the water pressure in the second water route, to open the first water route. When the outside connected switch is switched on, the valve cock is pushed to move downward by the water pressure in the second water route, to close the first water route.