1.Sealless Design 2.Low Material Shear 3.Ease of Maintenance 4.Can Run Dry without Damage 5.Portable 6.Self Priming 7.Easy-to-install 8.None dead spots:This avoids stalling issues associated with other pumps. 9.Big flow rate:Our DP11 Series AODD pumps apply bigger ball & wider fluid passage than other similar products. 10.Self-lubricating,lube-free and maintenance-free air systems. 11.More flow and less pulsation:Pilot air-distribution valve provides an ultra-positive,reliable shift signal that avoids stall-out,and provides faster pump trip-over with more flow and less pulsation. 12.The use of dual ceramic dynamic seals:More wear-resisting and to prevent & discharge pollution;Applicable to the harsh environment of air source;Long lifetime. 13.Anti-icing design:With bulit-in energy-dissipation chamber,it is anti-icing and effectively reduces the discharge air pressure and noise from work.