Process Pumps – BN Series
Standardised chemical process pumps according to ISO 2858 / EN 22858 / ISO 5199
The BN Series from Tecnium are heavy-duty plastic process pumps specifically designed for the continuous transfer of corrosive and abrasive fluids under demanding industrial conditions. Built in solid thermoplastic materials, these pumps combine outstanding chemical resistance with robust mechanical performance, ensuring safe, long-term operation in aggressive environments.
Design and Construction
The BN Series features a solid monoblock casing machined from a single thermoplastic block, providing maximum rigidity and chemical resistance. The impeller is closed, guaranteeing high hydraulic efficiency and reduced turbulence. A steel shaft completely protected by a removable plastic sleeve prevents corrosion and facilitates maintenance. The modular back pull-out design allows full dismantling of the rotor group without disconnecting suction or discharge lines.
Performance and Range
- Flow rate: up to 1,500 m³/h (6,600 gpm)
- Head: up to 120 mcl (394 ft)
- Nominal pressure: PN 10
- Maximum operating temperature: up to 90 °C, depending on the thermoplastic material used
- Configuration: single-stage, end-suction, back pull-out design
- Impeller: closed type for optimal hydraulic efficiency
Applications
Tecnium BN pumps are ideal for industries requiring maximum resistance to corrosive and abrasive substances, including:
- Chemical and pharmaceutical industries
- Water and wastewater treatment
- Surface finishing and galvanisation
- Fertiliser and phosphoric acid production
- Power generation and cooling circuits
Mechanical Seal Options
The BN series can be fitted with a wide variety of mechanical seals depending on the application and chemical compatibility:
- IP: internal single mechanical seal (SiC/SiC)
- IF: internal single mechanical seal (PTFE/Ceramic)
- SF: external single mechanical seal (PTFE/Ceramic)
- DE: double external mechanical seal
The mechanical seal housing is designed to isolate the sealing area from plastic stresses, improving reliability and preventing deformation during operation.
Downloads:
Process Pumps Brochure – English – 179 KB
Plastic Pumps Catalogue – English – 1.17 MB
Standard Plastic Centrifugal Pumps Catalogue –English – 1.6 MB
Technical Advantages
- Torque transmission by steel core and keyed impeller connection.
- Independent removable shaft sleeve, isolated from the impeller.
- DIN 2501 flanges standard (ANSI 150 lbs optional).
- Minimal maintenance even under the harshest operating conditions.
- Corrosive dispersion prevented through fully sealed mechanical cover design.
- CE compliant according to the European Machinery Directive 2006/42/EC.
- ATEX-certified versions available (Directive 2014/34/EU) for use in explosive atmospheres.
Available Materials
The BN Series pumps are available in a full range of corrosion-resistant thermoplastics to ensure maximum compatibility with industrial fluids:
- PP (Polypropylene)
- UHMW-PE (Ultra-High Molecular Weight Polyethylene)
- PVDF (Polyvinylidene Fluoride)
- E-CTFE (Ethylene Chlorotrifluoroethylene)
- PVC (Polyvinyl Chloride)
- PTFE (Polytetrafluoroethylene)
Mixed configurations are also available, allowing the combination of different thermoplastics — for example, PP or UHMW-PE casings with PVDF or PTFE wetted parts — to achieve optimal chemical compatibility and cost efficiency according to process requirements.
More information
Give us your contact details and we will advise you on the best solution for your application.
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