CP PUMPEN AG, Im Brühl, 4800 Zofingen, Switzerland
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MKP – Stainless Steel Magnetic Drive Chemical Process Pump

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  • Pump dimensions to DIN EN ISO 2858
  • Compact design with virtually no dead areas, allowing easy and efficient heating
  • Horizontal and vertical configurations available
  • Hydraulically balanced impeller for minimum bearing loads
  • Internal and external bearing lubrication and flush options
  • Solids handling capability up to concentrations of 30% and a particle size of 1 mm depending on the pumped fluid
  • Lower installation costs due to a single heating jacket for heating
  • Excellent heat distribution reducing temperature differences and preventing cold zones
  • Fast heat-up time assured by high heat transfer efficiency and heating energy delivered directly into the fluid chamber
  • Modular system consisting of just a few components, easy assembly

MKP Brochure | Order »
MKP Fact Sheet
MKP Exploded View

MKP with baseplate and motor

MKP with bracket and motor

Operation Range
Capacities 0.25 to 1'200 m3/h
Heads 3 to145 m
Pressure ratings PN 16, PN 25
Temperatures -100°C to +350°C
Kinematic viscosities 0.5 to 350 mm2/s
Solids handling Up to 30% solids concentation and 1 mm particle size, depending on the pumped fluid
Casing Materials
Stainless steel 1.4581 (316Ti)
Other materials Stainless steel (e.g. 1.4306, Uranus® B6), duplex alloys (e.g. 1.4517),
nickel-base alloys (e.g. Hastelloy® C-4, C-22), nickel (e.g. 2.4170),
titanium (e.g. Grades 2 and 7) and titanium alloys (e.g. Grade 5)
ceramic coating
Working Principle
Radial flow pump
Stages Single stage
Priming Method
Flooded suction
Sealing System
Magnetic coupling
CP's standard configuration Close-coupled (-100°C to +250°C)
EN standard configuration Frame-mounted (-100°C to +350°C)
Additional options Horizontal, vertical, bracket, centreline support (HT), in-line
EC Directives 2006/42/EC (Machinery), 2014/34/EC (ATEX)
Standards DIN EN ISO 2858, 5199 and 15783
Other Regulations
FDA 21 CFR §177


Jacketed Casing

Materials of construction Stainless steel (e.g. 1.4306, Uranus® B6)
Duplex alloys (e.g. 1.4517)
Nickel (e.g. 2.4170) and nickel-base alloys (e.g. Hastelloy® C-4, C-22)
Titanium (Grades 2 and 7) and titanium alloys (e.g. Grade 5)
Ceramic coating
Connection flanges To EN 1092-1
Drilled to ANSI/ASME B16.5
Additional connections Casing drain (with or without flange)
External flush connection for bearing lubrication and/or flushing and cooling the magnet assembly
Manometer connection on the casing
Lantern monitoring connection
Flange connection for heating jacket*
Heating jacket drain (with or without flange)*
Other casing connections to meet customer needs
*Available for jacketed casing only
Gasket materials PTFE
Graphite/stainless steel 1.4401
Graphite/nickel-base alloy 2.4819 (Hastelloy® C-276)
Sigma 511®/NT-CHEM-beige®
Plug seal materials PTFE
Silver-plated nickel
Casing wear ring

Bearing Assembly
Materials SSiC (sintered silicon carbide)
SSiC with graphite
SSiC with diamond-like coating (ADLC)
SSiC mit FuturaSafe®
Nickel-bound tungsten carbide
Nickel-bound tungsten carbide with diamond-like coating (ADLC)

Containment Shell
Materials Stainless steel
Hastelloy® C
Heavy-duty plastic (eliminating eddy current losses)
Zirconia ceramic (eliminating eddy current losses
Coating Al2O3 ceramic
Cont. shell vortex breaker
Containment shell insulation
Double-walled cont. shell With containment shell leakage monitoring

Pump Protection
Thermocouple On containment shell
Double-walled cont. shell With containment shell leakage monitoring
Temperature monitoring Containment shell temperature monitoring, Pt100 temperature probe
Motor load sensor

Types Baseplate
Angle stand
Centreline support
Stilt support plate
Materials Steel
Stainless steel
Drip pan
Bearing Frame
Lubrication Oil lubrication
Grease lubrication
Oil lubrication options Hermetic seal (MagTecta OM™)
Constant level oiler
Oil cooling with or without thermostat
Coupling guard Steel


  • Chemical processing:
    basic and fine chemicals
    (agrochemicals, speciality chemicals)
  • Pharmaceuticals
  • Biotechnology processing
  • Food and beverages
  • Pulp and paper


A wide variety, including:

  • Aseptic processes
  • Chlor-alkali electrolysis
  • MDI processes
  • Refrigeration and heating cycles
  • Tank unloading
  • TDI processes


Acids, bases, solvents, heated, crystallising and refrigerated liquids, as well as fluids containing solids. For example:

  • Hydrogen peroxide
  • Molten sulphur
  • Nitric acid
  • Oleum
  • Phosgene
  • Phosphoric acid
  • Potassium hydroxide solution
  • Sodium hydroxide solution
  • Sulphuric acid
  • Toluene

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