part of a well pump, used to prevent short-cycling.
Used in conjuction with wells to maintain pressure.
A fully enclosed tank with an air space inside. As water is forced in, the air compresses. The stored water may be released after the pump has stopped. Most pressure tanks contain a rubber bladder to capture the air. If so, synonym: captive air tank.
A system of storing water in tanks under pressure for fire fighting purposes or for fire protection purposes; used instead of elevated tanks or auxiliary pumps in private fire protection.