The BX Series motor pumps are compact, close-coupled units specifically engineered for the reliable transfer and circulation of corrosive and abrasive liquids in space-restricted installations.

Key design features:

  • Solid Thermoplastic Construction: Machined from high-grade solid blocks to ensure exceptional chemical resistance and dimensional stability, preventing casing deformation under mechanical stress.

  • Integrated Sealing & Protection: Features a mechanical seal seated without strain on the plastic body and a removable shaft sleeve that ensures zero contact between the process fluid and the high-resistance metallic shaft.

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

Compact monobloc engineering

The BX Series features a close-coupled (monobloc) design, which eliminates the need for a separate bearing housing and flexible coupling. This results in an incredibly compact footprint, making it the ideal solution for integrated machinery, small-scale chemical skids, and laboratory environments. For less severe applications where simplicity is the priority, the BXC sub-series provides a streamlined alternative without sacrificing the range’s core chemical-resistant properties.

Advanced mechanical sealing and safety

A critical innovation in the BX Series is the mechanical seal seating, which is mounted free of mechanical strain on the plastic casing. This prevents the common issue of plastic deformation over time. Additionally, a specialised mechanical-seal cover prevents any corrosive dispersion, significantly improving plant safety and cleanliness. The torque is transmitted via a robust key and a large-surface steel core, ensuring vibration-free operation and long-term mechanical stability.

  • Pump Type: Single-stage, end-suction centrifugal motor pump (monobloc).

  • Maximum Flow Rate: Up to 14 m³/h (model-dependent).

  • Maximum Discharge Head: Up to 20 mcl (model-dependent).

  • Standards & Quality: Manufactured under ISO 9001; CE compliant (Machinery Directive). ATEX versions are available for hazardous areas.

  • Shaft Protection: Features a removable thermoplastic sleeve, independent of the impeller, for rapid servicing and complete protection of the internal metallic shaft.

  • Materials of Construction: Available in PP, PE, PVDF, PVC, and E-CTFE.

  • Connections: Standard flanges per DIN 2501 / PN-16 or ANSI B16.5 150 lbs.

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

  • Mechanical Seal Configurations:

    • SF: Single external seal with bellow.

    • DE: Double external mechanical seal (for high-risk fluids).

    • IP: Internal single seal (SiC/SiC).

    • IF: Internal single seal (PTFE/Ceramic).

  • Global Drive Options: Support for IEC (50/60 Hz) and NEMA motor frames.

  • Advanced Components: Variseal technology and internal PVDF gaskets for enhanced chemical sealing.

  • Safety & Automation: Dry-run protection, vapour protection seals, and self-priming equipment for versatile installation.

Dimensional drawings and mounting parameters

The BXC and BHC horizontal motor pumps feature a compact monobloc design, facilitating seamless integration into space-restricted industrial installations. These technical drawings provide the physical parameters and fundamental mounting coordinates required for precise system alignment and pipework connection, ensuring a secure and structurally stable installation for corrosive fluid transfer.

Drawing Legend:

  • BXC / BHC: Compact horizontal pump variants featuring close-coupled (monobloc) drive configurations.

  • Connections (DNi / DNs): Standardised nominal diameters for the suction and discharge ports to ensure perfect coupling.

  • f (Total Length): The critical dimension determining the total footprint of the integrated motor-pump unit.

  • Coordinates r / q: Precise position markers used for the exact alignment and orientation of the discharge pipework.

  • Heights a, b, c, d: Key vertical measurements required to verify component clearances and intermediate support levels.

  • Mounting Base (h1, h2, Px, pd): Specific dimensions for the support plate and anchor points to ensure a rigid and vibration-free installation.

Motorpumps BX Series

Frequently asked questions – BX Motor Pumps

The BX Series is predominantly utilised in the chemical and pharmaceutical industries for the circulation of reagents and the transfer of high-purity or corrosive liquids. It is an excellent choice for surface treatment and laboratory skids where space is limited.

Additionally, its robust plastic construction makes it suitable for water treatment (WWTP) dosing systems and HVAC applications involving aggressive cooling media or brine.

The monobloc (close-coupled) layout significantly reduces the total length of the pump-motor unit. This space-saving design allows the pump to be installed in tight compartments or integrated directly into larger industrial machines.

Furthermore, because the pump is directly coupled, there is no need for manual shaft alignment, which reduces maintenance time.

Safety is enhanced through several design features: a mechanical-seal cover that prevents the accidental dispersion of corrosive fluids, and a seal seating that does not exert stress on the plastic casing.

This prevents cracks and leaks caused by material fatigue. Also, all metallic parts are completely isolated from the fluid by a removable thermoplastic sleeve.

Yes. We offer four primary seal configurations (SF, DE, IP, and IF) using materials ranging from SiC/SiC to PTFE/Ceramic. This allow us to tailor the pump to your fluid’s temperature, concentration, and abrasive profile, ensuring the longest possible service life for the seal faces.

Absolutely. Despite their compact size, BX pumps are engineered for continuous heavy-duty service. The solid thermoplastic hydraulics provide the dimensional stability required for 24/7 operation, and the high-surface steel core ensures the torque transmission remains stable and low-vibration over time.

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