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VS4 pump
  • vertical suspended
  • VS4
  • TAN
  • production VS4
  • Vertical pump
  • line shaft pump
  • single casing vertical pomp
  • Transporting VS4 pump
  • TAN pump
  • vertical pump
  • vertical suspended volute pump
  • vertical sump pump
  • TAN Rodelta
  • VS4 pump
  • VS4
  • TAN pump
  • extended suction pipe

Rodelta TAN (VS4) submerged pump

The pump type TAN is a single stage submerged pump (VS4). The compact TAN 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 TAN has a closed impeller and can be supplied with a wide variety of competitive hydraulics. Also see our pump types TAF (VS4), - TAE (VS4), for more hydraulic options.

For alternative specifications contact us.

  • Chemical Industry
  • Drinking Water
  • Flood Control
  • General Industry
  • Oil & Gas Downstream
  • Power Generation
  • Wast Water
  • Water Treatment

Rodelta TAN (VS4) submerged pump


  • 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 300mm
  • Capacity up to 1.200m3/hr
  • Head up to 120m per stage
  • Suitable for liquid Temperature: Up to 200ºC
  • Sealing Arrangement: Gland packing or with mechanical seals
  • Flanges Drilling Standard: Flanges can be as per BS EN/DIN/ANSI/ASA standard


  • Clean/contaminated fluids.
  • Chemical & petrochemical slurries.
  • Juices & juice slurries. Light Hydrocarbons Surface & waste waters


  • 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 tangential discharge.

Wear rings

The casing and cover and supplied with renewable axial wearrings.
Optional, impeller wearings can be supplied.


The closed impeller is mounted with a key to the shaft and locked by an impeller screw. For reducing the pressure behind the impeller balancing holes are drilled. No balancing holes will be drilled by application of a suction to avoid air entrance via the pump bearing.

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 by 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 TAF (VS4), – TAE (VS4), for more details.

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      TAN (VS4) submerged pump

      EU US
      • Features Single casing, volute, line shaft pump
      • Capacity @ BEP Upto 1200 m3/hr Upto 5280 Gpm
      • Head Upto 120 m Upto 390 feet
      • Temperature range -20 to 200 °C -4 to 392 °F
      • Discharge pressure PN 16 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 900/1200/1800 rpm
      • Options V-Rings / Gland packing / Mechanical Seal
      • Flange drilling standard BS EN/DIN/ANSI /ASA
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