HMD Kontro CSA/CSI – Chemical Service Sealless Magnetic Drive Pumps

The CSA/CSI magnet drive end suction sealless centrifugal pumps are a modular range of chemical service pumps, designed to cover a wide duty and application base using the minimum of pump models by maximising interchangeability of components.

The range is based on a number of hydraulic sizes and fully conform to the current ASME B73.3 (CSA) or ISO 2858/15783 (CSI) dimensional, performance and construction requirements.

The range is specifically designed for maximum part interchangeability, ease of onsite service and has a wide number of site upgradable features.

The CSI range has been expanded to include additional models, providing comprehensive hydraulic coverage to support specialist chemical processing applications. With a total of 13 Frame 1 and 16 Frame 2 sizes, there is greater variation in the inlet and outlet sizes, enabling flow rates to rise to 120 m3/h and heads up to 62m.

Key Design Features

  • No Seals: Minimises maintenance, all of the associated costs and eliminates potential leaks.
  • Sealless design: For total containment, essential for hazardous, aggressive or valuable product.
  • Modular & interchangeable components: For maximum convenience and minimal lead time.
  • High efficiency hydraulics: To benefit maximum flow / head coverage.
  • Low and High Flow hydraulic variants: Provides optimised hydraulic fit.
  • Robust design: Featuring ZeroLoss® containment shell for tolerance to system upsets.
  • Casing Gasket fully confined: Eliminating risk of blowout.
  • Internal & External Bump Ring Design: Providing additional level of robustness.
  • Modular Rotating Element Cartridge: Providing the most efficient way to perform rapid replacement and manage spare part inventory.
Flows to 120m³/hr (528 gpm)
Heads to 62m (296 ft)
Pressure 18.9 bar/275 psi
Temperature Range -40 to 260°C (-40 to 500°F)

Chemical Processing

  • Chlor-Alkali
  • Pesticides
  • Insecticides
  • Herbicides
  • Fertilizer

Hydrocarbon Processing

  • Sour water
  • Sulfuric acid
  • Benzene
  • Xylene
  • Toluene


  • Produced water
  • LACT

Aquatic and Marine

  • Seawater
  • Caustic

Battery Manufacturing

  • Sulfuric acid
  • Potassium hydroxide


  • Bio-diesel
  • Ethanol

Food and Beverage

  • Fragrances


  • Sodium cyanide
  • Sulfuric acid
  • Hydrochloric acid


  • Silicon oil (Heat transfer fluid)

Pulp and Paper

  • Chlorine
  • Sulfuric Acid

Semiconductor Manufacturing

  • Hydrofluoric acid
  • Sulfuric acid

Steel Finishing, Pickling, Etching and Plating

  • Hydrochloric acid

Water and Wastewater Treatment

  • Sodium hypochlorite
  • Sodium hydroxide
  • Sulfuric acid
  • Ferric Chloride

Our pumps combine cutting-edge technology with over seventy years of expertise and experience to give you complete piece of mind.

Product Security – Magnetic drive sealless pumps are the safest and most robust means for liquid transfer. By eliminating the seal, the primary opportunities for leaks associated with traditional sealed pumps are completely removed.

Efficiency – By improving performance and reducing maintenance calls, sealless magnetic drive pumps can dramatically lower downtime and lost production. In sum, this equates to maximised efficiency that can be seen on your bottom line.

Reliability – Sealless magnetic drive pumps have proven their reliability in even the most severe climate conditions, from the frozen tundra of Siberia to the deserts of the Middle East and the humid climes of Louisiana’s refineries. In fact, there are  HMD Kontro pumps that have been in operation for over 30 years and are still running today.

Safety – HMD Kontro sealless magnetic drive pumps are manufactured to conform to international design and safety standards, including ATEX, ISO, API and ANSI requirements.  Plus, with no mechanical seals to leak hazardous chemicals, these pumps offer a clear choice for process industry professionals who regularly deal with volatile or high value materials.

Cost-effective – Sealless magnetic drive pumps require less monitoring and maintenance than traditional sealed designs, equating to substantial savings over the life of the pump.

Service – Global service centres keep HMD Kontro sealless magnetic drive pumps operating with peak performance.  Standard pumps and parts are available from the factory and in the field.

US 60 Hz

Heads to 296 ft
Flows to 528 gpm
Maximum Motor Power 40 hp
Temperature Range -40 to 500°F
Maximum Case Working Pressure 275 psi
Hydrotest Pressure 425 psi
Maximum Viscosity 200 csT
Motor Details Industry standard
Solids Range 5% w/w <150 microns
Mounting Configuration Close and long coupled
Dimensional Standards ASME B73.3/ISO 2858
Number of Available Hydraulics 10 (CSA), 11 (CSI)
Available Flanges ANSI 150lb/DIN 2543 PN16 RF

Metric 50 Hz

Heads to 62 m
Flows to 120 m³/hr
Maximum Motor Power 22 kW
Temperature Range -40 to 260°C
Maximum Case Working Pressure 18.9 Bar
Hydrotest Pressure 29.3 Bar
Maximum Viscosity 200 csT
Motor Details Industry Standard
Solids Range 5% w/w <150 microns
Mounting Configuration Close and long coupled
Dimensional Standards ASME B73.3/ISO 2858
Number of Available Hydraulics 10 (CSA), 11 (CSI)
Available Flanges ANSI 150lb/DIN 2543 PN16 RF

Standard materials of construction

  • Stainless Steel with Alloy C & Alloy 20 Optional variants. complete with Silicon Carbide internal bearings.

Other material options are available on request


Installed in the Motor Control Centre (MCC), a power monitor measures the power required to operate the pump.  By setting High and Low trip points, the power monitor is the perfect solution for protecting your pump from:

  • Dry running
  • Low flow operation
  • High flow operation
  • Severe cavitation
  • Magnet decoupling

ZeroLoss® Shell

  • 18.9 bar Design pressure
  • PEEK Composite design
  • Suitable for process temperatures up to 120°C
  • High Power NdFeB Magnetic Coupling
  • High efficiency – no induction losses,
  • no heat into process liquid
  • Provides highest process upset tolerance
  • In-built vortex breaker

Metallic Shell

  • 18.9 bar Design pressure
  • Proven welded construction
  • High strength alloy C276 tube
  • Suitable for process temperatures up to 260°C
  • Range of SmCo Magnetic Couplings to suit specific duty requirements
  • In-built vortex breaker

A gas detection system designed to bolster the reliability and eliminate dry-running of HMD Kontro API-685 sealless magnetic drive pumps. This warning system mitigates costly pump component replacements and downtime that can result from dry running, entrainment or cavitation.

The VapourView® is powered by an industry standard 24 VDC supply and returns a 4-20 mA signal suitable for monitoring using a distributed control system (DCS). It features both light emitting diode (LED) and liquid crystal displays (LCD) to provide information on process fluid conditions inside of the pump to process engineers.

The VapourView® has been performance tested and is compliant with explosive atmosphere and electro-magnetic compatibility requirements. The VapourView® non-intrusive gas-in-liquid detector can be easily retrofitted into any HMD Kontro API 685 pump and will operate at temperatures between -40 and +350 degrees F (-40 and +180 degrees C).

Choice of secondary control or secondary containment systems

  • Secondary housing designed for 18.4 bar pressure conditions
  • O-rings to completely seal secondary housing
  • Provision for Liquid Sensing probe or Pressure
  • Sensing device to be fitted in Secondary housing
  • Fully compliant to ASME requirements
  • Available on both Close Coupled and Separately Mounted design configurations
  • Extended Spacer and Shaft design utilised on Separately Mounted designs
  • For process temperatures < 205°C

All HMD Kontro pumps, as standard, can handle up to 5% hard solids and 150 microns diameter. The solid size can increase to 8% solids and 250 microns by fitting a self-cleaning in line filter.

For larger solids, HMD Kontro can provide pumps with a clean flush system or filter built into the flush pipework.