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Horizontally installed KSB submersible motor pump of the type Amarex KRT with Amaslide maintenance aid

Remains cool, even in dirty conditions: the Amarex KRT submersible motor pump with cooling jacket

Transporting waste water is something KSB has been working on at the highest level of expertise for many decades while also taking a major step forward into the future: At IFAT 2022, hosted in Munich from 30 May to 3 June 2022, KSB is presenting many highlights, one of which is its new compact Amarex KRT submersible motor pump with integrated cooling jacket.

Welcome to our green vision: Using less energy for reliable waste water transport


The global population keeps growing continuously – and so does the demand for intelligent solutions for efficient and reliable waste water disposal. The new compact Amarex KRT submersible motor pump complements KSB's product range, offering the right pump set for the most diverse of applications. 
The new models are available with a drive rating of 10 - 65 kW and can be installed vertically or horizontally. Since the pump motors remain fully operational when not submerged, the pump sets can also be used in pump sumps when water levels have dropped. Further benefits:
  • High-efficiency IE3* motors and variable hydraulic systems for optimum hydraulic efficiency and energy efficiency
  • New D-max impeller with enhanced efficiency for handling raw waste water 
  • Thanks to their IP68 enclosure, the pumps also offer trouble-free continuous operation when flooded.
  • Long service life due to corrosion-resistant wetted components made of stainless steel
  • Meets all explosion protection requirements set out in the ATEX, EAC, FM and CSA standards
  • Motor cooling via a closed circuit: No contact between the circulating water-glycol mixture and the fluid handled
  • Suitable for fluid temperatures of up to 40 °C and ambient temperatures of up to 55 °C – perfect for use in countries with high ambient temperatures. No air-conditioning is required for ambient temperatures of up to 55 °C. 
  • Sensor package fitted as standard for accurate operation monitoring and analysis with the Amacontrol III protection module
* IEC 60034-30 standard not binding for submersible motors. Efficiencies calculated/determined according to the measurement method specified in IEC 60034-2. The marking is used for submersible motors whose efficiencies are comparable to those of standardised motors to IEC 60034-30.

Apart from offering maximum operating reliability, we at KSB always make sure our products are highly efficient – not only to help operators save energy but also to protect the climate, true to our trade fair motto: Welcome to the world of green solutions!

KSB - 4STK mechanical seal

Double cartridge seal of the KSB type 4STK
A critical point of many pumps is the mechanical seal between the rotating shaft and the stationary pump casing. KSB has now developed a special mechanical seal for dry-installed pumps of the Amarex KRT type series that are fitted with a cooling jacket.
The 4STK model is a double cartridge seal that, if necessary, can be replaced as a complete unit to make servicing work easier and faster. The seal can be dismantled without the need to remove the discharge cover. Further, an impeller integrated between the seal at the impeller end and the seal at the motor end ensures the best possible circulation of the cooling liquid.

Our services relating to waste water

Successfully operating your pump systems requires more than excellent products: We also invite you to benefit from our broad service portfolio covering planning, operation and maintenance of valves, pumps and other rotating equipment. We are there for you, with more than 3500 specialists in over 190 service centres around the globe.

Our products for waste water transport

KSB is a full-range supplier for pumps, valves and services for waste water applications with decades of experience and in-depth application knowledge. All KSB products offer long-term efficiency and reliability and require minimal maintenance, ensuring the economical, trouble-free operation of systems.

Amarex KRT

Amarex KRT
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