Wanner Engineering's C80 Series airbleed priming valves automatically open to allow F/G-20 through D/G-12 Series Hydra Cell pumps to self-prime by quickly relieving the system of trapped vapors or air rather than compressing the gas and causing pump airlock. The valves then automatically close to provide immediate full-system pressure. The valves are available in a variety of materials and mount horizontally or vertically to satisfy various application requirements. Wanner Engineering; 612-332-5681; sales@wannereng.com