Patent ID: 7373950

Claim:
A ceramic control valve comprising: a valve casing; and a control device mounted in said valve casing, said control device comprising: a ceramic disk assembly having a fixed disk and a movable disk laminating and movable relative to said fixed disk so as to change a mixing proportion of cold water and hot water and to change an output flow rate; a linking seat secured on said movable disk of said ceramic disk, said linking seat having a receiving hole formed therein; a lever seat laminating said linking seat; and a control lever rotatably mounted in said lever seat, said control lever having a first end protruding from said valve casing and a second end formed with a drive block inserted into said receiving hole of said linking seat, said drive block having a spherical surface, said receiving hole of said linking seat having a wall, said receiving hole having a portion in contact with said spherical surface and a second portion spaced from said spherical surface so as to form a plurality of gaps between said second portion of said receiving hole and said spherical surface, a diameter of said drive block being greater than a maximum width of each of said plurality of gaps, said first portion of said receiving hole having four flat faces, said second portion of said receiving hole having four arcuate faces located respectively between said four flat faces.