Aspirin, also known as acetylsalicylic acid (ASA), is a salicylate medication, often used to treat pain, fever, and inflammation. Aspirin also has an antiplatelet effect by stopping the binding together of platelets and preventing a patch over damaged walls of blood vessels.
The device, which connects to the plumbing, regulates the home's water supply. When the water pressure drops to a certain level, the switch senses more water is needed, and spring-loaded electrical parts make contact, turning on the well pump. When the pressure returns to a preset level and the well tank is filled, the electrical contacts separate, and the well pump turns off.
The pump is controlled by a pressure switch located on the piping near the pressure tank. Systems typically run between 40 and 60 psi, but can be set to a higher or lower pressure. Often, pressure is set with a simple spring and screw adjustment inside the pressure switch housing. Loss of air cushion causes problems.