Patent ID: 8281814

Claim:
A water supply valve cartridge, comprising: first and second rotary disks ( 130 and 150 ) that are rotated by operation of a temperature control unit ( 170 ) and a flow rate control unit ( 160 ), thus opening or closing hot and cold water inlet holes ( 121 and 122 ) formed in a first fixed disk ( 120 ) and a water passage hole ( 141 ) formed in a second fixed disk ( 140 ) and a plurality of water discharge holes comprising a water discharge hole ( 123 ) formed through the first fixed disk ( 120 ), a water discharge hole ( 132 ) of the first rotary disk ( 130 ), and a pair of water discharge holes ( 142 ) formed in the second fixed disk ( 140 ), wherein the second fixed disk ( 140 ) among the fixed disks ( 120 and 140 ) of the valve cartridge ( 100 ), which has the water passage hole ( 141 ) to introduce inlet cold water, inlet hot water or a mix of the cold and hot water, is provided with the pair of water discharge holes ( 142 ), which are symmetrically formed through a center of the second fixed disk at a position spaced apart from the water passage hole ( 141 ) by a predetermined gap, are opened or closed by the second rotary disk ( 150 ) and controllably discharge the cold water, the hot water or the mix of the cold and hot water, and the second rotary disk ( 150 ) among the rotary disks ( 130 and 150 ), which controls the amount of inlet cold water and inlet hot water and discharges the water by operation of the flow rate control unit ( 160 ), has a diameter to cover only the area around the water discharge holes ( 142 ) of the second fixed disk ( 140 ), with a pair of flow rate control grooves ( 151 ) formed on both sides of an end surface of the second rotary disk ( 150 ) to open only the water discharge holes ( 142 ) during rotation of the second rotary disk ( 150 ).