A fluid valve which opens for a predetermined time before automatically closing. The valve (101) incorporates a control means including a control chamber (103), a first/inlet passageway (102) and a second/outlet passageway (120). A flow control element (104) is provided in one of the passageways (102) or (120). A biasing means (117) normally biases the valve to a first/closed position (Fig. 3). An activation means (113) is adapted to move the flow control element (104) to an activated position (Fig. 4) wherein flow of fluid is then permitted for a predetermined time.