The B80KGKG3 two-stage pump series sets a new standard for plastic centrifugal pumps and opens up new possibilities for reliable and safe operation of plant engineers and operators.

Today, in applications for flue gas cleaning, gas scrubbing or surface cleaning, the demand for vertical submersible pumps is increasing. These types of pumps are indispensable to ensure reliable operation and a faster cleaning process.

However, due to the different technical characteristics of the materials, the leading technology applied to metal pumps cannot be simply applied to the design of plastic pumps. Due to the limited thermal elasticity of plastics, plastic pumps cannot withstand the same high bearing loads as metal pumps.

Due to the increase in the size of the impeller, the demand for the primary and intermediate bearings of a single-stage pump with a immersion depth greater than 2000 mm is balanced by the high radial forces generated by pumps operating at high speeds. This exposes the limitations of thermoplastic materials.

To this end, a modular system was developed for the development of a two-stage pump series with a rated speed of 1,450 rpm, which satisfies operational safety and system availability even in continuous operation. The product uses two impellers arranged in one impeller behind the other so that the pump lift reaches 85 meters. When used to pump liquids containing solids or with low lubricity, the wear resistance of the two-stage pump is significantly better than that of a fast-running single-stage pump.

Another important advantage is that the installation size is much smaller – an important aspect of factory engineering. Due to the use of a four-pole drive system, the pump produces very little noise.

The two-stage centrifugal pump has a flow rate of 280 cubic meters per hour and a lift of 85 meters. The applicable temperature range is from minus 10 degrees Celsius to 90 degrees Celsius depending on the material selected. The pump is submerged to a depth of 4,000 mm. The dry gas seal is used to protect the bearing and the motor is mounted as an atmospheric shaft seal. The shaft can also be sealed by a single-acting standard balanced mechanical seal.

The axial force is absorbed by the grease/oil infiltrated rolling bearing. Excess radial force is absorbed by the wide main bearing, which is made of PTFE-GF/ceramic or SiC fiber toughened silicon carbide (SiC/SiC), depending on The condition of pumping media.

The pump casing is made of polypropylene and polyvinylidene fluoride. Glass fiber reinforced or coated polypropylene is suitable for high temperature applications.

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