The CAT, a captive acceleration tube from Cat Pumps, Minneapolis, is said to eliminate cavitation in pumps. Cavitation is the collapse of gaseous formations in the pumped liquid. Energy from the collapse causes erosion and pitting in pumps. The CAT stores liquid energy and kicks it into the pump as needed to assure adequate liquid to each cylinder at the beginning of its stroke. The accessory removes peaks and valleys to provide smooth, consistent inlet pressure. The pumps are 316 stainless steel and come in a range of sizes with straight and elbow adapters.