BKM Series

The BKM Series magnetic drive pumps are sealless centrifugal units specifically engineered for the high-security transfer of corrosive, toxic, or hazardous chemicals where total fluid containment is mandatory.

Key design features:

  • Hermetic Magnetic Coupling: Utilises a sophisticated magnetic drive system that eliminates mechanical seals and packings, ensuring zero leakage and a completely leak-proof, maintenance-free operation.

  • Dry-Run Resilience: Features a unique self-aligning impeller system that allows the pump to operate in dry conditions for short periods without overheating, by positioning the impeller in a neutral, friction-free state.

This serie is designed to fit on ISO2858 for high performance.
All internal components are manufactured in a material corrosive.

Total containment and zero emissions

The BKM Series is designed for processes that demand absolute safety. By employing a magnetic coupling system, torque is transmitted from the motor to the impeller through a hermetic isolation shell. This removes the need for any direct mechanical contact or seals, effectively eliminating the risk of hazardous emissions or product loss. It is the ideal solution for the pharmaceutical and chemical sectors where the transfer of volatile or highly toxic compounds requires total containment.

Robust construction and maintenance efficiency

Constructed from solid thermoplastic blocks (PP or E-CTFE) with steel structural reinforcement, the BKM series offers exceptional chemical resistance and mechanical rigidity. A key operational advantage is its back pull-out construction, which allows for the removal of the motor and internal components without disconnecting the pump from the pipework. Furthermore, unlike traditional magnetic drive pumps, the BKM is designed to handle liquids with impurities and suspended solids, significantly broadening its application range.

  • Pump Type: Horizontal, single-stage, sealless magnetic drive centrifugal pump.

  • Standards Compliance: Designed to meet ISO 2858, ISO 5199, and EN 22858 high-performance standards.

  • Maximum Flow Rate: Up to $50\text^3/\text$ (≈ 220 gpm).

  • Maximum Discharge Head: Up to $45\text$ (≈ 147 ft).

  • Wetted Materials: Available in PP and E-CTFE for superior chemical resistance.

  • Shaft & Bushing Materials: Shafts in Ceramic or Silicon Carbide (SiC); guide bushings in HD Carbon or PTFE+Carbon fibre.

  • Pressure & Temperature: Rated for system pressures according to ISO standards and temperatures up to $90\text$.

  • Surface Finish: Standard RAL 6011 green (ISO 12944), available up to C5M protection level.

  • Drive & Safety: Support for IEC and NEMA motor frames; full ATEX certification available for hazardous zones.

  • Connection Versatility: Both threaded and flanged connections available (EN 1092-1 PN16 or ANSI B16.5 150#).

  • Sealing Enhancements: Variseal systems and internal PVDF gaskets for extreme chemical compatibility.

  • Automated Protection: Electronic dry-run protectors, vapour protection systems, and self-priming equipment for specialised suction requirements.

Dimensional drawings and mounting parameters

The BKM series magnetic drive pumps feature a sealless, hermetically sealed design compliant with ISO 2858 and EN 22858 standards for the safe handling of hazardous fluids. These dimensional drawings provide the essential physical parameters and mounting coordinates required for precise system alignment and pipework connection.

By detailing the total unit length, suction/discharge orientations, and support plate footprints, these schematics ensure a secure, vibration-free, and leak-proof installation in demanding chemical environments.

Drawing Legend:

  • BKM Series: Horizontal magnetic drive centrifugal pumps featuring a hermetic isolation shell and back pull-out design.

  • Connections (Dna / Dni): Standardised suction and discharge ports available in threaded or flanged (EN 1092-1 / ANSI) configurations.

  • k1 (Total Length): The critical dimension determining the total footprint of the integrated motor and magnetic coupling assembly.

  • a / b / c: Specific longitudinal coordinates used for the exact alignment of the hydraulic body and mounting supports.

  • Heights (h1 / h2): Vertical measurements from the base to the pump axis and discharge outlet, essential for piping design.

  • Mounting Base (L / n / m): Footprint dimensions and anchor bolt centres (ø 12) to ensure a rigid and structurally stable fastening.

bkm magentic pump

The performance curves and dimensional schematics for the BKM series facilitate the precise selection and integration of these sealless magnetic drive pumps. These charts illustrate a versatile hydraulic range, reaching flow rates of 50 m³/h and discharge heads of 45 metres, ensuring total containment for hazardous fluids.

By utilising these technical parameters, engineers can achieve a secure, leak-proof installation tailored to the most demanding chemical processing requirements.

Frequently asked questions – BKM Magnetic drive pumps

The BKM Series is the primary choice for the chemical and pharmaceutical industries when handling volatile acids, alkalis, solvents, and chlorinated compounds.

It is essential in surface treatment plants for acid pickling and anodising circuits, as well as in energy and power generation for scrubber systems and condensate lines. Its ability to provide total containment also makes it ideal for fertiliser production and wastewater treatment where toxic reagents are metered or transferred.

Because the BKM series is sealless, it removes the most frequent maintenance requirement: the repair or replacement of mechanical seals.

The magnetic coupling transmits power hermetically, reducing friction and preventing the heat-related wear typical of traditional seals. This results in a significantly higher Mean Time Between Maintenance (MTBM) and lowers the total cost of ownership.

Yes. Unlike many standard magnetic drive pumps, the BKM is engineered to handle liquids containing impurities and suspended solids. Additionally, it features a specialized self-aligning support system.

If the pump runs dry, the impeller automatically moves to a neutral position between its guide bushings, preventing friction and allowing it to run dry for several minutes without overheating.

No. Thanks to its back pull-out design, the motor and the internal rotor assembly can be removed for inspection or service while the pump casing remains connected to the suction and discharge pipework. This design drastically reduces downtime during routine inspections.

Absolutely. The series is designed to fit ISO 2858 dimensions for high-performance service and is manufactured under ISO 9001 quality systems. It is fully CE compliant and we offer ATEX-certified versions for installations in classified areas where explosive gases or vapours may be present.

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