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  • ISO 2858
  • DIN 24256
  • Chemical Norm pump
  • Chemical pump
  • DIN24256
  • ISO2858
  • Chemical norm pump
  • CNP
  • DIN 24256
  • chemical pump
  • pump magnetic coupling
  • mag pump
  • mag drive

Rodelta CNP+ (OH1)

The OH1, type CNP+ is an overhung end suction, volute casing, radially split pump with a back pullout design. These pumps are developed for process applications and conform to ISO5199, DIN 24256 (EN22858) and ISO 2858. Stuffing box chamber are designed confirming to ISO 3069-C. Delivery size ranging from 25mm to 150mm.

For alternative specifications contact us.

  • chemical industryChemical Industry
  • district heatingDistrict Heating
  • Drinking waterDrinking Water
  • Dry dockDry Dock
  • Fire fightingFire Fighting
  • Flood contoleFlood Control
  • General IndustryGeneral Industry
  • Marine AplicationsMarine Applications
  • Mining and MineralsMining & Minerals
  • Oil & Gas Down streamOil & Gas Downstream
  • Oil & Gas UpstreamOil & Gas Upstream
  • Power generationPower Generation
  • Pulp and paperPulp & Paper
  • Water treatmentWater Treatment

Rodelta CNP+ (OH1)

This pump its part of the Rodent on stock program.


  • End suction centrifugal process pump
  • Back pull out design
  • Top centerline discharge with foot mounted as well as centerline volute casing
  • Availability of cooling jackets to cool stuffing box for liquids having temperature more than 105 deg C
  • The pumps are offered with CE marking
  • Depending on the application, area classification ATEX certification possible
  • These pumps are developed for process applications and conform to ISO5199, DIN 24256 (EN22858) and ISO 2858.


  • Delivery size: Up to 150 mm
  • Capacity: up to 500 m3/h
  • Head: up to 150 m
  • Working pressure: 16bar
  • Temperature: -50°C to 350°C


  • Acids, Alkalies and Light chemicals
  • Hydrocarbons, oils
  • Various Process Chemicals
  • Food processing units

Constructional features:

  • Shaft deflection limited to 50 µm
  • Bearing life as per ISO 76 and ISO 281-1; the basic rating life (L10) not less than 17500 hours
  • Allowable values of forces and moments for nozzle as per ISO 5199
  • Vibration limit as per ISO 5199
  • Back pull out design for easy and quick maintenance
  • Wide hydraulic coverage with 46 different models and hydraulic performance
  • Enclosed impeller having smooth hydraulic passages for better efficiency
  • Modular design concept for maximum interchangeability of components
  • Available in variety of material of constructions based on the liquid to be pumped
  • Corrosion allowance of 3 mm for pressure containing parts
  • Angular Contact ball bearing for Axial Thrust and Roller bearings for Radial Thrust
  • Positive locking of impeller on shaft with the help of impeller nut and screw lock insert
  • Labyrinth type metallic liquid deflector to protect bearing from ingress of process liquid & dust at non driving end
  • Bearing Isolator(AES LabTecta or Inpro Seals) for driving & non driving end as optional
  • Availability of casing cooling/heating Jackets and cooling seal chamber
  • Conical (Taper) seal chamber for improved seal reliability
  • Hook type shaft sleeve with one end free to expand at higher temperature
  • Heavy duty construction for continuous operation
  • Provision upon request for bearing temperature detection and vibration sensor in Horizontal Direction on left side when viewed from drive end for both DE and NDE bearing. Size of tapping will be M6 to ¼” NPT depending on size of pump

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CNP+ (OH1)

  • Design standard DIN 24256, EN 22858, ISO 2858, ISO 5199 DIN 24256, EN 22858, ISO 2858, ISO 5199
  • Features OH1-Over hung end suction, volute casing, radially split design, back pull-out
  • Capacity @ BEP Upto 500 m3/hr Upto 2200 Gpm
  • Head Upto 150 m Upto 492 feet
  • Temperature range -50 to 350 °C -58 to 662 °F
  • Discharge pressure upto PN 16/ PN 20 upto Class 125/ Class 150
  • Material (Casing/Impeller) Cast Iron, Bronze, SS, Duplex, Super Duplex, Hast alloy
  • 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
  • Flange drilling standard BS EN/DIN/ANSI /ASA

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