A system for dispensing a liquid sourced from a plurality of liquid sources comprising: - a first tap operably connected to a first one of the plurality of liquid sources, the first tap having a first tap spout, a first valve member biased closed so as to prevent fluid flow from the first liquid source to the first tap spout unless under a counter-biasing force, and a first actuator operably associated with the first valve member to apply the counter-biasing force; - a second tap operably connected to a second one of the plurality of liquid sources, the second tap having a second tap spout, a second valve member biased closed so as to prevent fluid flow from the second liquid source to the second tap spout unless under a counter-biasing force, and a second actuator operably associated with the second valve member to apply the counter-biasing force; and - an adaptor (100, 200) having a dispensing spout and a body to communicate fluid between the dispensing spout and each of the first and second tap spouts (120a, 120b) and having means for mechanically applying the counter-biasing force to the first and second taps (102a, 102b), characterized in that - the means for mechanically applying the counter-biasing force to the first and second taps (102a, 102b) comprising: ° a first counter-biasing member having a first front flange and a first actuator flange, the first counter-biasing actuator flange being disposed in an abutting relationship with the first actuator; and ∘ a second counter-biasing member having a second front flange and a second actuator flange, the second counter-biasing actuator flange being disposed in an abutting relationship with the second actuator such that when the front flanges (140, 155) of the first and second counter-biasing members (135, 150) are pinched together the actuator flanges (145, 160) of the first and second counter-biasing members (135, 160) push against the first and second actuators (115a, 115b) counter-biasing them to allow fluid flow between the first and second liquid sources and the first and second tap spouts (120a, 120b). - a first tap operably connected to a first one of the plurality of liquid sources, the first tap having a first tap spout, a first valve member biased closed so as to prevent fluid flow from the first liquid source to the first tap spout unless under a counter-biasing force, and a first actuator operably associated with the first valve member to apply the counter-biasing force; - a second tap operably connected to a second one of the plurality of liquid sources, the second tap having a second tap spout, a second valve member biased closed so as to prevent fluid flow from the second liquid source to the second tap spout unless under a counter-biasing force, and a second actuator operably associated with the second valve member to apply the counter-biasing force; and - an adaptor (100, 200) having a dispensing spout and a body to communicate fluid between the dispensing spout and each of the first and second tap spouts (120a, 120b) and having means for mechanically applying the counter-biasing force to the first and second taps (102a, 102b), - the means for mechanically applying the counter-biasing force to the first and second taps (102a, 102b) comprising: ° a first counter-biasing member having a first front flange and a first actuator flange, the first counter-biasing actuator flange being disposed in an abutting relationship with the first actuator; and ∘ a second counter-biasing member having a second front flange and a second actuator flange, the second counter-biasing actuator flange being disposed in an abutting relationship with the second actuator such that when the front flanges (140, 155) of the first and second counter-biasing members (135, 150) are pinched together the actuator flanges (145, 160) of the first and second counter-biasing members (135, 160) push against the first and second actuators (115a, 115b) counter-biasing them to allow fluid flow between the first and second liquid sources and the first and second tap spouts (120a, 120b). ° a first counter-biasing member having a first front flange and a first actuator flange, the first counter-biasing actuator flange being disposed in an abutting relationship with the first actuator; and ∘ a second counter-biasing member having a second front flange and a second actuator flange, the second counter-biasing actuator flange being disposed in an abutting relationship with the second actuator such that when the front flanges (140, 155) of the first and second counter-biasing members (135, 150) are pinched together the actuator flanges (145, 160) of the first and second counter-biasing members (135, 160) push against the first and second actuators (115a, 115b) counter-biasing them to allow fluid flow between the first and second liquid sources and the first and second tap spouts (120a, 120b).