3:1 Air operated pumps are designed for most demanding operations. Unique pre-lubricated air motor, lubricator NOT required. Quiet and double acting operation and easy to fit to drum, 2” drum adapter included, seals in NBR/PU Max air pr.: 1.0 MPa (150 psi) Air inlet: 1/4” BSP (F) Outlet: 3/4” BSP (F) Capacity: Max 25l/min Pump tube: Ø34mm. L=200mm