Drip. Drip. Drip. It’s dripping quietly. Just a little. This can happen if you have a low-pressure mixer tap in your kitchen. What does it look like beneath your sink? If there a hot water heater or a boiler in your base cabinet? Yes? Then you need a kitchen mixer tap that has been specially made to compensate for the pressure between the water pipe and your hot water processing system via a low-pressure boiler. : A low-pressure mixer tap. It is easy to spot the difference with a high-pressure mixer tap: Three hoses hang from a low-pressure mixer tap, or you will be able to see three openings, while a high-pressure mixer tap only has two.