TSRL Hybrid

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Power 7.5 kW and 11 kW
Mains frequency 50 or 60 Hz
Axial thrust up to 4,215 N
Circulating rate up to 5,975 m³/h
Propeller diameter up to 1,290 mm
Coolant/medium temperature max. 60 °C
Mechanical seal Pairing of SiC/SiC


Type Power rating Current rating Propeller speed Axial thrust Circulating rate *
  kW (P2) A rpm N m³/h
TSRL  74-160 7.5 13.8 116 2,920 4,433
TSRL 114-160 11 21 116 4,215 5,975
Motor 400 V, IE2 (IE3 available for selection), rated frequency 50 Hz, index of protection IP 68
Energy-saving motors have higher inrush currents due to their design!
  * Circulating rate according to ISO 21630:2007



Dimensions of TSRL submersible agitator
Dimensions of TSRL submersible agitator
Type D L L 1 H H 1 Weight
  mm mm mm mm mm kg *
TSRL  74-160 1,150 1,400 484 510 235 240
TSRL 114-160 1,290 1,400 484 510 235 300

* Agitator without carriage


Housing GG25
Seal holder Stainless steel 1.4301 (V2A)
Connecting elements Stainless steel 1.4301 (V2A)
Motor shaft 1.7225
Propeller Stainless steel 1.4301 (V2A)
Mechanical seal Silicon carbide
Carriage Stainless steel 1.4301 (V2A)
Corrosion protection Inertol Poxitar for standard applications
Ceramic coating or the like for aggressive media, or according to customer request


  • For use in potentially explosive atmospheres, TSRL submersible agitators are available with the "pressure-tight encapsulation" ignition protection type (Ex db) according to ATEX and IECEx (zones 1 and 2).
  • Temperature monitoring in the motor winding
  • Monitoring of the seal system by "streisal Toplimiter" leakage probe – optionally also in tandem version, i.e. with two mechanical seals and oil chamber on the inlet end.


The TSRL hybrid submersible agitator is perfectly suited for mixing and flow generation in biogas tanks with relatively high dry matter contents and substrate temperatures up to 60 °C. The propeller profiles with optimised flow characteristics and diameters of 1150 and 1290 mm ensure high efficiencies and excellent mixing performance with minimal flow losses.


For use in potentially explosive atmospheres, submersible motor agitators in the TSRL series are available in the "pressure-tight encapsulation" ignition protection type II 2G Ex db ib h IIA T3 Gb according to ATEX and IECEx. The maximum medium temperature is 60 °C.


A decisive feature for comparing the efficiency of agitators is what is referred to as the first performance number as a quotient of the generated thrust force and the energy observed at the operating point. The propeller geometry that has undergone further development in the streisal fluid mechanics laboratory involving the use of the latest measuring technology and has been optimised in the test tank (large scale) means that enormously high thrust values are possible with a low power consumption. This means much lower and operating costs!

Agitator Technology Centre


It has been shown in practice that reliability and durability of shaft seals are decisive criteria for trouble-free operation. In particular in media with relatively coarse or abrasive solids, long-fibre constituents and disruptive substances (such as plastic strands, films, etc.), the unique and patented seal system from streisal offers a series of advantages:

  • Highly wear-resistant streisal Seal Guard mechanical seal made of silicon carbide
  • Upstream labyrinth seal to prevent penetration by disruptive substances
  • Submersible agitator housing with easily replaceable wearing ring
  • Mechanical seals are protected by being mounted in a stainless steel holder
  • Spring elements on the inside, not in contact with the medium


streisal Seal Guard seal system
streisal Seal Guard seal system
Tandem version of streisal Seal Guard
Tandem version of streisal Seal Guard