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closed coupled DIN24255

Rodelta WNC+ (OH1)

The OH1 closed coupled type, WNC+ are with volute casing, radially split pump with a back-pullout design and stub shaft design suitable to align with standard motors. Compact WNC+ pump sets offer the advantage of space saving and elimination of need a base plate, coupling and coupling guards. WNC+ range of pumps provides close coupled versions of Rodelta’s WN+ series which is designed based on the DIN 24255/ EN733 standards. The range covers 25 pump sizes from 32mm to 125mm discharge. The WNC+ pumps are suitable for applications with clean and clear liquids without solid abrasive particles suitable to water supply, firefighting, sprinkler, irrigation, air conditioning, drinking water and cooling water. This pump is also available in a non close coupled execution the WN+ / WNL+ (OH1)

For alternative specifications contact us.

  • chemical industryChemical Industry
  • district heatingDistrict Heating
  • Drinking waterDrinking Water
  • Fire fightingFire Fighting
  • Flood contoleFlood Control
  • General IndustryGeneral Industry
  • IrrigationIrrigation
  • Mining and MineralsMining & Minerals
  • Power generationPower Generation
  • Water treatmentWater Treatment

Rodelta WNC+ (OH1)


  • Back pullout facility permits removal of motor, support frame, stub shaft along with impeller without distributing the casing and piping.
  • Interchangeability – major components like pump casing (with feet), impeller, casing cover, etc. are interchangeable with popular WN+ series frames.
  • Low NPSHR – Excellent suction performance
  • Robust casing and support frames
  • Modular component design across the range minimizes spares holding of shaft, seals and wear rings.
  • All standard pumps are fitted with high efficiency shell moulded impellers.
  • TEFC motors fitted as standard. Other motor options available.
  • Compact WNC+ pump sets offer the advantage of space saving and elimination of need a base plate, coupling and coupling guards. Apart from the elimination of bearing support arrangement in pumps.

Constructional features:

Pump casing
Pump casing had axial suction and top center-line delivery suction and delivery nozzles are integral with casing.

Impellers are enclosed type. The hydraulic thrust is balanced either by back vanes or through balancing holes and back vanes.

Stub Shaft
A special designed stub shaft is used to connect the pump with standard motor with greater ease.

Mechanical Seals
WNC+ pumps are supplied along with mechanical seal arrangement as a standard source of supply. Mechanical seal will be as per DIN24960 standard dimensions. Two sizes of mechanical seals cover the entire range of WNC+ pumps sets.

Standard seal faces for mechanical seal
Standard seal: Ceramic
Rotating seal: Carbon

Direct drive through stub shaft
Direction of rotating will be clockwise when seen from motor side.

Pump casing flanges are drilled as per BSEN: 1092-2 (old 2533ND) plain face. Flange drilling can also be given as ASA, BS, IS standards.

This pump is also available in a non close coupled execution the WN+/WNL+ (OH1)

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WNC+ (OH1)

  • Design standard DIN 24255 DIN 24255
  • Features OH1-Closed coupled, volute casing, radially split design, back Pull-out
  • Capacity @ BEP Upto 800 m3/hr Upto 3520 Gpm
  • Head Upto 100 m Upto 328 feet
  • Temperature range -10 to 100 °C -14 to 212 °F
  • Discharge pressure upto PN 10/PN 16 upto Class 125/150
  • Material (Casing/Impeller) Cast Iron, Bronze
  • Nozzle Orientation (suc/dis) Top center-line discharge(self venting)
  • Standard Motor Sync. Speed 1000/1500/3000 rpm 1200/1800/3600 rpm
  • Options Mechanical Seal DIN24960 / Stub shaft
  • Flange drilling standard BS EN/DIN/ANSI /ASA
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