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vortex pump

Rodelta TAF (VS4)

The pump type TAF is a single stage submerged pump (VS4). The compact TAF range are vertically mounted line shaft pumps with intermediate bearings for line shaft support. Many applications can be supported with open or enclosed line shaft configurations combined with various shaft sealing options such as V-ring, gland packing and mechanical or gas seals. standard oil lubricated bearings, executed with constant oil leveler. The TAF has a vortex fully open impeller and can be supplied with a wide variety of competitive hydraulics. Also see our pump types TAN (VS4), - TAE (VS4), for more hydraulic options.

For alternative specifications contact us.

  • chemical industryChemical Industry
  • Drinking waterDrinking Water
  • Flood contoleFlood Control
  • General IndustryGeneral Industry
  • Power generationPower Generation
  • Wast WaterWast Water
  • Water treatmentWater Treatment

Rodelta TAF (VS4)


  • Easy maintenance Space coupling allows seals/bearing servicing without pump removal, replaceable wear plate
  • Top or bottom mounted seal option
  • Media or external lubrication option


  • Delivery size up to 200mm
  • Capacity up to 400m3/hr
  • Head up to 25m per stage
  • Suitable for liquid Temperature: Up to 170ºC
  • Sealing Arrangement: Gland packing or with mechanical seals
  • Flanges Drilling Standard: Flanges can be as per BS EN/DIN/ANSI/ASA standard


  • Fibrous, textile, leather, rubber, polymer suspensions.
  • Delicate crystals such as salt and xylene.
  • Hydrocarbons.
  • Generally low shear applications.


  • Steel mills
  • Chemical & Petrochemical plants
  • Oil & Gas
  • Paper mills
  • Power plants
  • All kinds of sump duties

Constructional features:

Pump casing / cover

The casing is executed as a single volute with central discharge.


The open impeller is mounted with a key to the shaft and locked by an impeller screw.

 Bearing arrangement

–  Top bearing
The bearing bracket is executed with radial and axial ball bearings.
The bearings are grease lubricated and they can be re-lubricated via a grease nipple on the bearing housing.

–  Pump bearing and intermediate bearings
The pump bearing and intermediate bearings are executed as plain bearing. Lubrication method by product, grease or external fluid.

Shaft sealing

–  Standard execution
Due to the design with the separate discharge pipe a shaft sealing against the pumped medium is in  principle not required.
–  Shaft sealing variants
An execution with several shaft sealings for gastight execution is possible and will be used in application as:

  • Toxic gassing fluids
  • Fluids with explosive dangerous gasses
  • Overpressure in the tank
  • Bad smelling fluids
  • Hazardous liquids

Possible options as packed gland, double lipseals or mechanical seal are available

Baseplate & discharge pipe
The baseplate is standard supplied with rectangular baseplate optionally flanged (round) baseplate available.
The discharge pipe have EN1029 PN10 flange as standard and optional ANSI16.5 150#

Strainer is used to protect the pump against particles from the medium. The strainer baskets are constructed from perforated (stainless) steelplate (openings 5x5mm).

Extended suction pipe
Possibility for extended suction pipe construction. This results in a larger immersion suction depth and  can also lead to lower purchase costs.
More info extended suction pipe construction.

This versatile unit can be supplied with a wide variety of competitive hydraulic options. See our pump types TAN (VS4), – TAE (VS4), for more details.

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  • Features Volute type, Open Votex type impeller, line shaft pump
  • Capacity @ BEP Upto 400 m3/hr Upto 17600 Gpm
  • Head Upto 25 m Upto 80 feet
  • Temperature range -20 to 170 °C -4 to 248 °F
  • Discharge pressure Upto PN 10 Upto Class 125
  • Material (Casing/Impeller) Cast Iron, Bronze, SS, Duplex, Super Duplex
  • Nozzle Orientation (suc/dis) Discharge through side discharge pipe
  • Standard Motor Sync. Speed 750/1000/1500 rpm 720/900/1200 rpm
  • Options V-Rings/Gland packing / Mechanical Seal
  • Flange drilling standard BS EN/DIN/ANSI /ASA
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