Liquidynamics 21073T 5:1 Oil Pump, 29” Suction Tube, Pump Only See Other Models::5:1 Pneumatic Pumps 29 21073T DUTY CYCLE (ON OFF) RD9V 25B 9 10 DUTY CYCLE (ON OFF) 30 Min 30 Min 3 millimeter) with a heavy duty follower spring for consistent priming and a posi lock follower rod with ergonomically designed T handle which provides a sure handed grip and easy filling at any position while the tough follower offers a superior seal and eliminates grease bypass These pumps are an excellent choice for high flow applications in truck shops or industry where multiple dispense points are required These pumps also have a maximum fluid pressure output of 600 PSI but have flow rates more than twice the output of normal 5:1 pumps