Vertical centrifugal immersion pumps by RENNER

Vertical pumps RT

RENNER vertical centrifugal immersion pumps are designed for vertical deployment in non-pressurized tanks, open basins or pits. They offer the same range of services as magnetic drive centrifugal pumps, and enable additional possibilities due to the vertically submerged installation in the container or tank.

  • Without sealings
  • Safe-to-run-dry
  • Space-saving by direct installation
  • Saving of suction pipes
  • Customer-specific installation flange
  • Construction in fully plastic material
  • Variable discharge connection
  • Direct mounting of the RENNER filter housings
  • All RENNER vertical pumps RT are available with an integrated variable speed drive
  • All pumps with high efficiency motors (IE2 + IE3 + IE4)
  • Electroplating industry
  • Etching and cleaning systems
  • Refrigeration machines
  • Solar systems
  • Treatment of waste water and fresh water
  • Photographic industry
  • Textiles and foodstuff industry
  • etc.
  • PP gray or natural (available with or without fiber glass)
  • PVDF natural (no fiber glass)
  • PPS (Ryton®)
  • PFA, ECTFE
  • PVC, CPVC
  • Stainless steel (1.4305; 1.4571)
  • Titanium
  • EPDM
  • FKM
  • FFKM
  • Kalrez
  • FEP-encased
  • Hmax = up to 45 mWS
  • Qmax = up to 180 m3/h [3,000 l/min]
  • 60 W to 22.0 kW
  • All voltages / frequencies
  • Asynchronous single or three phase
  • Synchronous PM
  • DC motors 12 V to 48 V
  • Protection classes: IP55, IP56, IP66, IP67, IP68
  • All motors from 0.37 kW with additional phase insulation suitable for frequency converter operation (for 60 W to 250 W available on request)
  • Tropical insulation
  • Anti-condensation heater
  • VIK version
  • UL, CSA-c/US version
  • Motor cooling IC 411 (integrated fan)
  • IC 410 (surface cooling)
  • Witworth pipe thread (sealing surface with O ring groove or for gasket)
  • Flange DIN2501, ANSI-Class 150
  • NPT adapter
  • Density:
    up to max. 2.0 kg/dm3
  • Viscosity:
    up to max. approx. 160 mPas (cP)
  • Acids, alcalines, mixtures
  • Solvents
  • Alkaline degreasing baths
  • Electroplating baths
  • Photo chemicals
  • Radioactive, sterile, precious media
  • Foodstuffs
  • Other low-viscosity media
  • PP:
    0 to +80 °C
  • PVDF:
    -20 to +100 °C
  • PFA/ECTFE:
    -20 to +100 °C
  • PPS (Ryton®):
    -20 to +100 °C
  • Stainless steel:
    -20 to +100 °C
  • Titanium:
    -20 to +100 °C
  • Corrosion-free plastic pumps
  • Alternatively also pumps made of stainless steel or titanium
  • Energy efficient thanks to high overall efficacy of the system (pump / motor)

Vertical centrifugal pumps overview

* = suitable only for 60 Hz operation
** = 4-poles

These pumps without sealings and safe-to-run-dry, out of fully plastic material, are expecially space-saving and are installed mainly in industrial facilities.

The pumps are equipped with special seals, which prevent, also with heavily creeping solutions, the escape of steam and so the hereby created undesired crystallization. As standard the pumps are equipped for immersion depths from 200 mm to 500 mm; in addition, by installing an intermediate bearing, immersion depths up to 2.500 mm are possible. The equipment with customer-specific installation flanges is possible, if desired.

OPTION: If required, Series RT vertical centrifugal immersion pumps can also be fitted with an integrated variable-speed drive.

In all RENNER centrifugal pumps, the pump, motor and frequency converter form one compact unit. This allows small dimensions, increases operational readiness and reduces costs.

The advantages of the variable-speed drive integrated in the motor:

  • Energy saving

  • Fluid control to suit your requirements

  • Space-saving drive

  • No power loss in the switch cabinet by the FC

  • Less installation work

  • The pump is delivered ready to connect and pre-programmed

  • No long, cost-intensive, shielded motor cables

  • No separate EMC-filter

  • Gentle pumping of the medium

  • No heating-up of the pumped medium by energy dissipation

  • No external motor circuit breakers thanks to integrated motor protection functions

The frequency converters are available in various versions. Control is optionally possible via:

  • Terminal strip

  • Analog input

  • Serial interface

  • Potentiometer

  • Control panel

  • Field bus (Profibus, etc.)

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Choice of material

Metal-free and all-plastic making of our pumps is standard since this design guarantees best protection from corrosion. Housings may be also made of special stainless steel. We offer the right combination of materials for any fluid to be delivered, depending on its temperature.

The following materials are available:

Components Short designation Material Temperature
All parts in contact
with the medium
PP Polypropylene 0 up to +80 °C
PVDF Polyvinylidenfluoride -20 up to +95 °C
PPS Ryton® -20 up to +100 °C
Stainless steel 1.4305, 1.4571 -20 up to +100 °C
Titanium 3.7035 -20 up to +100 °C
Oxide ceramic Al-Oxide 99.7 % -20 up to +100 °C
Seals EPDM Ethylene-Propylene-Diene-Rubber -15 up to +100 °C
FPM Viton® -20 up to +100 °C
FEP-encased Viton® FEP-encased -20 up to +100 °C
NBR Nitrile-Butadiene-Rubber (Perbunan) -20 up to +100 °C