Abstract: A sullage diversion valve assembly (10) enables a user to selectively divert sullage to a waste line or to a hose for irrigation or other purposes. The valve assembly (10) is designed to be fitted to the outlet pipe (11) of a laundry tub (12) or other source of sullage, and comprises a rotary valve (20 ) operated by handle (23 ). When the valve is open, sullage flows to a waste pipe (16) as normal. However, when the valve is closed, the passage to the waste pipe (16) is blocked, and the sullage is diverted to an outlet (17) connected to the hose (18 ). An overflow outlet (19 ) is provided to enable sullage to flow to the waste line (16) in the event that the hose (18 ) is obstructed.