Sanitary-ware couplable to a mains water supply, the sanitary- ware comprising: a flushing assembly including: at least one flushing tank having a first chamber, a second chamber and a pressure exchange mechanism; said first chamber having a first volume and an inlet, said second chamber having a flushing outlet and a second volume, larger than the volume of the first chamber; said pressure exchange mechanism disposed between the first chamber and the second chamber; the inlet couplable to a source of water at high pressure, e.g. such as to the incoming mains water supply, receiving a first quantity of water at the high pressure from the source; the first chamber receiving the first quantity of water therein received at the high pressure from the source; wherein the pressure exchange mechanism separates said first and second chambers, wherein the second chamber having a second quantity of water which is larger than the first quantity, characterized in that the flushing assembly further includes a cistern (35, 135) and the first quantity of water in the first chamber applies pressure, by means of said pressure exchange mechanism, the second chamber has the second quantity of water therein received from said cistern and the first quantity of water in the first chamber applies pressure by means of said pressure exchange mechanism, to the second quantity of water in the second chamber, pushing it out of the second chamber through the flushing outlet at a pressure lower than at the inlet. a flushing assembly including: at least one flushing tank having a first chamber, a second chamber and a pressure exchange mechanism; said first chamber having a first volume and an inlet, said second chamber having a flushing outlet and a second volume, larger than the volume of the first chamber; said pressure exchange mechanism disposed between the first chamber and the second chamber; the inlet couplable to a source of water at high pressure, e.g. such as to the incoming mains water supply, receiving a first quantity of water at the high pressure from the source; the first chamber receiving the first quantity of water therein received at the high pressure from the source; wherein the pressure exchange mechanism separates said first and second chambers, wherein the second chamber having a second quantity of water which is larger than the first quantity, characterized in that the flushing assembly further includes a cistern (35, 135) and the first quantity of water in the first chamber applies pressure, by means of said pressure exchange mechanism, the second chamber has the second quantity of water therein received from said cistern and the first quantity of water in the first chamber applies pressure by means of said pressure exchange mechanism, to the second quantity of water in the second chamber, pushing it out of the second chamber through the flushing outlet at a pressure lower than at the inlet. at least one flushing tank having a first chamber, a second chamber and a pressure exchange mechanism; said first chamber having a first volume and an inlet, said second chamber having a flushing outlet and a second volume, larger than the volume of the first chamber; said pressure exchange mechanism disposed between the first chamber and the second chamber; the inlet couplable to a source of water at high pressure, e.g. such as to the incoming mains water supply, receiving a first quantity of water at the high pressure from the source; the first chamber receiving the first quantity of water therein received at the high pressure from the source; wherein the pressure exchange mechanism separates said first and second chambers, wherein the second chamber having a second quantity of water which is larger than the first quantity, characterized in that the flushing assembly further includes a cistern (35, 135) and the first quantity of water in the first chamber applies pressure, by means of said pressure exchange mechanism, the second chamber has the second quantity of water therein received from said cistern and the first quantity of water in the first chamber applies pressure by means of said pressure exchange mechanism, to the second quantity of water in the second chamber, pushing it out of the second chamber through the flushing outlet at a pressure lower than at the inlet.