Overflow device for bathtub

摘要

An overflow device (10) for a bathtub (34) has an overflow inlet (36) arranged for mounting in a conventional overflow hole of the bathtub, an overflow outlet (52) for connection to a waste; a water inlet (22,28) for connection to a water supply; a water outlet (24,30) for connection to a conventional bath tap; a valve (26,32) connected between the water inlet and water outlet; means (88), for example a spring, for storing energy that can be used to change the valve (26,32) from its open state to its closed state; a float (58) and trigger lever (68) or the like for detecting water that has entered the overflow inlet (36) and triggering the device to change, using energy stored by the spring (88), from a set state in which the water valve (26,32) is open to a triggered state in which the water valve (26,32) is closed; and a manually operable resetting element (48) that can be operated by a user to replenish the spring (88) with energy and to return the device to the set state. Because the device is arranged to be connected between the water supply and a conventional bath tap, it can be permanently plumbed in and the bulk of the device can be hidden from view outside the bathtub, for example behind a conventional bath panel. Because the device has a spring or the like that can be replenished with energy upon manual operation by the user, rather than relying, for example, purely on the buoyancy of a float (58) to close a valve (26,32), the device can be of small size and yet have sufficient energy stored to close the valve reliably.