There are four main types of faucets. The internal mechanisms that allow water to travel through them are what make each one unique. The types are disc, cartridge, ball and compression. When a plumber goes to fix a faucet, his or her first step is to identify what kind it is. An easy way to gain insight into this is to identify how many handles the fixture has. Single handles that control both cold and hot temperatures are disc, cartridge or ball faucets. Those with two handles, one for each temperature, are most likely compression faucets. To further learn about the faucet’s workings, We can take apart the inner workings. This allows him or her to easily identify what the issue is and how to fix it.