Ideal Standard A954352NU11 SE clockwise close bath tap ceramic disc 3/4"

The cartridge is the entire basis for the faucet's function. It contains a rocker switch capable of blocking off or opening both hot and cold water lines entirely, as well as to varying degrees. In other words, when you raise the lever to turn the water on, you're pushing the cartridge forward, causing both water lines to unblock.

When you push the lever down, both water lines are blocked entirely, turning off the water flow. This is the simple part, the genius of this device is that, based on how far the lever is pressed to one side or the other, the hot and cold water lines are opened at different ratios. When centered, the cartridge lets water from both lines pass equally. When pressed to the left, the cartridge lets more water from the hot line pass than the cold line until the cold line is blocked entirely. Similarly, when pressed to the right, the catridge lets more water from the cold line pass than the hot line until the hot line is blocked entirely. This Cartridge can be used in the following Taps