Boat pump 3S

transferfor storage tanksseawater

The 3S three-screw pumps consist of a broad range of low maintenance pumps for lubricating, non-abrasive and chemically inert liquids. 3S pumps are the best choise in many various industrial applications. A universal design The 3S series has been thoroughly engineered and is applicable for various applications. With a range consisting of 29 different pump sizes with delivery rates from 5 – 2.900 l/min @ 1450 rpm the 3S series is one of the most comprehensive three-screw pump ranges available on the market. Furthermore, the individual pump sizes are available in several executions, which ensures a high degree of flexibility when specifying a pump for specific system designs. Low maintenance The 3S series pump is designed with a lifetime-lubricated external ball bearing with an expected lifetime of 30.000 hours. With a weep hole just between the shaft seal and the bearing, preventing accumulation of residue the bearing is well protected. The ball bearing is not exposed to the pumped liquid. The mechanical seal is well lubricated and cooled. The seal is designed to efficiently dissipate frictional heat. Magnetic coupled version The 3S pumps are also available in a magnetic coupled version. The pump is hermetically sealed and the liquid cannot escape or react by coming into contact with other materials. How it works The basic principle of the 3S screw pump is that the turning screws isolate fluid and convey it. The conveyance thus takes place through the axial displacement of closed volumes. The rise in pressure is directly related to the length of the screws.