The RS series pumps are single-stage pumps with a special recessed impeller located at the rear of the housing. They are available with industrial flanges (RSM) or food connections (RSA). Most of the liquid flows through the pump housing without direct contact with the impeller, which ensures gentle pumping of the medium. All crystals, delicate solids, granules, flakes of biological sludge, pieces of skin, etc. are pumped without any damage to the device. Long and filamentous solids pass through the pump without causing any blockages. The Vortex impeller is able to pump mixtures up to 50% air or gas, as well as media with viscosity up to 700 cPs.
The pump has four types of seals to choose from: single, double tandem, double back-to-back, and gland packing packing. This allows these pumps to be used for difficult applications. A version with food-grade connections and a shielded motor is also available. The maximum working pressure is 8 bar depending on the pump size. All pump sizes are equipped with standard IEC electric motors.
RS series pumps can pump chemical and crystalline slurries, all viscous liquids, high-concentration fibrous suspension liquids, all types of sludge, and municipal and industrial wastewater. They are also used in general industrial services, the food industry, dissolved air flotation systems, wastewater treatment plants, the sugar industry, water/solvent recovery processes, power plants, the steel, textile, and tanning industries.
- Versatility – 7 different layouts of industrial sealing flange connections (PN16) or Food Grade (DIN 11851 as standard) means that these pumps can be used in many different industries for a variety of applications.
- Higher abrasion resistance – the pump body has been designed to pump liquids along with suspensions, even if they are abrasive. The continuity of the surface prevents any blockages from occurring. All wear points have been appropriately shaped.
- Vortex impeller with large free passage – free passage up to 60% of the nozzle diameter. The special recessed impeller ensures the flow of solids and fibrous materials equal to 90% of the discharge nozzle diameter. Long and fibrous solids pass through the pump without causing it to clog. Some examples: shavings, grass and plant parts, textile fibers, bags, cords, bones and butchery parts, leather parts in the tanning industry, tomato with skin and stem, apples and other fruits, green leafy vegetables, onion and potato skins, feathers, straw, food scraps, plastic parts or bottles, glass waste, wooden parts and shavings, sewage, etc.
- Standard IEC electric motor – the standard motors used in RS pumps are type B5 – B3B5 or B3B14 depending on the size and are normally available on the market. The shaft is mounted above the motor shaft and can be replaced if worn.
- Wide range of applications – for the food industry, water installations, sewage treatment plants, the sugar industry, water/solvent recovery systems, power industry, steel processing industry.
The two main parts of a centrifugal pump are the impeller with blades (impeller) and the pump housing (casing). In the most common type – the centrifugal pump with a volute casing – the liquid enters the pump near the center of the high-speed rotating impeller. The liquid on the suction side moves along the axis of the impeller and due to the centrifugal force generated by the blades, it is thrown radially into the chamber in the casing. The casing gradually expands in a spiral manner towards the discharge nozzle, which reduces the velocity of the liquid and thus increases the pressure (diffuser effect). At the same time, as the liquid is thrown radially by the impeller due to centrifugal force, the pressure in the center of the impeller drops, enhancing the effect of drawing liquid into the pump, which enables a continuous liquid transfer process.
