QED’s special AutoPump® AP4 Ultra models are available to pump fluids up to 250 ºF (120ºC), and are already proven in service. These high temperature pumps use the highly reliable AutoPump core design and proprietary Ultra non-stick finishes, but add specialized materials of construction to extend the upper temperature limit. The end result is a proven pump that delivers long-term durability and withstands high liquid temperatures.