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Spandau pumps have been among the leading suppliers of spindle pumps and immersion pumps for more than 80 years, and not just in the mechanical engineering sector. The range of applications includes low, medium and high pressure applications.
Spandau-Pumpen was founded in Berlin in 1932 and received a patent for the first sealless immersion pump in 1934. Since 1986, Spandau-Pumpen has been part of SKF Lubrication Systems Germany, a Swedish technology group that is represented in 140 countries and employs more than 46,000 personnel.
The product range of Spandau pumps includes immersion pumps, ATEX ink pumps and hydrocyclones. The immersion pumps are subdivided into units for heavily contaminated media, for slightly contaminated media, and for clean media.
The company uses a wide range of materials and designs in the manufacture of its immersion pumps and spindle pumps in order to meet customer requirements. Spandau pumps are used, for example, in cooling lubricant circuits for machine tools, in printing machines, in humidifiers and air-conditioning devices, as well as in optical devices. Further areas of application include surface and process engineering as well as laser technology. Due to the extremely robust construction, the pumps of the traditional Berlin-based company can be used in practically any field, regardless of whether they are used in cryogenic or in extremely hot liquids. Of course, the pumps are also resistant to acids and alkalis.
Immersion pumps for heavily contaminated media are used in machine tools, cooling and temperature control equipment, filter systems and optical machines. The media to be transported can be various fluids for industrial use, as well as heavily contaminated water emulsions, both synthetic and mineral oil-based and with chemical additives, or it can be low-viscosity cutting and cooling oils as well as acids and lyes. The main features of these pumps with the factory designations PR, PRT / PRA, HCT, PMS and PSH are: sealless housing, optionally single or multi-grade, pump shaft with motorside bearing, connection dimensions standardised to DIN 12157 and slurp pumps for fluids containing trapped air. These pumps are characterised by their high operational safety, low maintenance requirements, smooth running, flexible immersion depths and quick and easy installation and commissioning.
Depending on the model, the immersion depths can vary from 120 mm at 30 l/min, model PR, up to 550 mm and 800 l/min, model PSH. In addition, models HCT and PMS have temperature resistances from minus 100 degrees to plus 170 degrees.
The pumps for slightly contaminated media are similar in specification to the pumps for heavily contaminated media but differ in details such as the option of designing the models without seals or with mechanical seals. Further deviations can be seen during operation. The PRG, PRK, PSR, PXA and PS/PSL models listed here have higher immersion depths on average but a smaller temperature range. For example, the PSR model can achieve an immersion depth of 739 mm, whereas the maximum temperature scale ranges from minus 10 to plus 80 degrees.
The LMP and PRV model series pumps are used in the main application areas for pure media, machine tools and filter systems. These are screw pumps with three spindles and self-priming design. Sixteen different sizes are offered in this model series. The standard equipment of these pumps includes hardened spindles and housings, a protective ring for the rotary shaft seal ring, leakage monitoring, and a pressure relief valve.
The hydrocyclones round off the range of pumps from the Berlin manufacturer. They are suitable, for example, for filter medium-free cleaning systems.