Jabsco Pump Catalog

Diaphragm Centrifugal Sliding Vane Electric pumps should always be installed in a dry, well-ventilated position as close as possible to the liquid to be pumped. Plumbing should always be reinforced, non-collapsible hose of the recommended size. Bilge pumps and water diaphragm bilge pumps in particular should always be fitted with a filter and strainer on the inlet plumbing to protect them from debris. These should be fastened to the boat structure to ensure their permanent location. Pumps must be installed with the overboard discharge well above the waterline (both static and heeled) to avoid water siphoning back into the vessel. Electric diaphragm pumps can be run dry for up to two hours. • Self-Priming: Vertical lift up to 16' (5m) for manual pumps and 6-10' (2-3m) for electric pumps. • Dry Running: Diaphragm pumps can be run dry for extended periods with no damage, therefore requiring less attention during use. • Versatility: Self-priming and dry running capabilities mean few limitations on use. Larger manual diaphragm pumps have the ability to handle some solids in suspension. Electric diaphragm pumps make excellent bilge pumps for boats with shallow bilges, or bilges with restricted areas. • Quiet Running: Electric pumps feature smooth flow and low noise levels. HOW IT WORKS a. The diaphragm, pulled upward by the movements of a piston or a handle, causes a partial vacuum, opening the inlet port and closing the outlet, drawing in liquid. b. Downward movement of the diaphragm pressurizes the liquid, closing the inlet valve and opening the outlet valve through which liquid is expelled by pressure. Pipe runs should be kept as short and straight as possible, avoiding rising and dipping over obstructions as this can cause airlocks. Always use hose of the recommended size, and of a rigid or reinforced type that will not collapse under suction conditions. Electric pumps should always be installed in a dry, well-ventilated position as close as possible to the liquid to be pumped. • Durable: Heavy-duty construction with quality materials gives long life. The body is designed to resist environmental damage. The vanes and rotor are constructed of a wear-resistant, long-life material. • Self-Priming: Self-priming up to 13' (4m). • Simplicity: There are few moving parts to replace. The rotor, vanes and seal are lubricated by the liquid being pumped. • Versatile: An excellent compact unit for pumping diesel fuel or hydraulic oil. • Can run in either direction. HOW IT WORKS a. The vanes create a partial vacuum for priming. b. As the rotor rotates, each successive vane draws and carries liquid from the intake to the discharge port. c. When the vanes contact the eccentric portion of the pump body, they force liquid out the discharge port head. Pipe runs should be kept as short and straight as possible, avoiding rising and dipping over obstructions as this can cause airlocks. Always use hose of the recommended size. Submersible bilge pumps must be installed with the overboard discharge well above the waterline (both static and heeled) to avoid water siphoning back into the vessel. • High-Volume Flow: Centrifugal pumps handle high volumes with a smooth, non-pulsating flow. The flow rate can be regulated from maximum output to no flow with no damage to the pump. An excellent pump for general transfer applications. • Low Maintenance: Few moving parts means that wear due to operation is minimal. • Easy Installation: Compact size for flow rate. Option of port positions simplifies pipe runs. • Versatility: Centrifugal pumps can be built in submersible form, making excellent bilge pumps. • Low Power Consumption: Electric centrifugal pumps consume less power than most other bilge pumps. HOW IT WORKS a. Centrifugal pumps must be either initially primed or mounted in such a way that liquid is permanently available at the inlet port (e.g., submersible pumps). b. The rotating impeller gives velocity energy to the liquid, moving it to the periphery of the volute casing and toward the discharge port. c. The volute casing discharge arrangement converts velocity energy into static pressure or available pump head. a b a b c a b c WARNING No pump manufactured by Jabsco or Rule should be used for gasoline, petroleum products or any fluid with a flash point below 100˚F (38˚C). 7 01 An Introduction to Pumps Introduction