A single handle brass 3-way kitchen mixer is a type of faucet that is designed for use in kitchens. It is typically made of brass, which is known for its durability and resistance to corrosion. The "3-way" feature refers to the ability of the mixer to control three different water flows: hot water, cold water, and a mixed flow of hot and cold water.

The single handle design means that there is only one lever or knob that is used to control the water flow and temperature. This makes it easy to operate the faucet with one hand, providing convenience and efficiency in the kitchen.

The 3-way kitchen mixer typically has two water inlet pipes—one for hot water and one for cold water—and a single spout for dispensing the water. The lever or knob can be moved in different directions to adjust the temperature and flow rate. For example, moving the handle to the left might increase the flow of hot water, while moving it to the right could increase the flow of cold water.

The 3-way feature is particularly useful when you need a specific water temperature for tasks such as washing dishes or filling pots. It allows you to adjust the ratio of hot and cold water to achieve the desired temperature. Some 3-way kitchen mixers also come with additional features like a pull-out sprayer or a separate tap for filtered water.

When choosing a single handle brass 3-way kitchen mixer, it's important to consider factors such as the quality of the brass construction, the style and finish that matches your kitchen decor, and any additional features that may be important to you. It's also a good idea to ensure that the mixer is compatible with your existing plumbing setup and that it meets any local plumbing codes or regulations.