Centrifugal pump NMB

for gasoilfor chemicals

Overview
The NMB is a single-stage chemical pump built to ISO 2858 dimensions with a magnetic drive. The split canister (spalttopf) provides hermetic containment of the pumped fluid; induced eddy currents are handled by internal circulation. The shaft is supported by product-wetted SiC sleeve bearings for maintenance-free, wear-resistant operation. Full axial thrust compensation across the entire performance curve is ensured by the integrated hydraulics. The direct-mounted standard motor eliminates coupling alignment. A wide range of variants and monitoring options allows tailored solutions for operators.

Applications

• Oil & Gas
• Chemicals
• Petrochemicals
• Offshore
• Shipbuilding / Marine
• Refuelling & Aviation
• Tank farms / terminals
• Renewable energy / Environmental engineering

Key features

• Type: NMB — single-stage chemical pump to ISO 2858
• Sealing: magnetic drive for hermetic, leakage-free operation
• Direct-mounted standard motor (no coupling alignment required)
• Split canister for hermetic separation; internal circulation to remove eddy currents
• Product-wetted SiC sleeve bearings (maintenance- and wear-free)
• Complete axial thrust compensation across the whole duty range via integrated hydraulics
• Wide range of variants and monitoring options for customised solutions

Performance data (typical / maximum)

• Q max: 300 m³/h (depends on size and speed)
• H max: 250 m (depends on size and speed)
• Operating pressure: 16 / 24 / 40 bar (higher on request)
• Temperature range: up to 200 °C (higher on request)
• Max speed: 3500 rpm
• Configuration: horizontal
• Self-priming: yes
• Bearings: rolling bearings outside medium; product-side SiC sleeve bearings
• Lubrication: grease
• Materials: Duplex, Ni-based alloys, spheroidal cast / grey cast iron, austenitic cast steel
• Standards: DIN EN ISO 2858, ISO 15783
• Ex protection: Category 2 / Zone 1

Note
Values for pressure, temperature and flow depend on pump size and rotational speed; higher values available on request.

Technical specifications

• Model: NMB
• Installation: horizontal, direct-mounted standard motor
• Sealing solution: magnetic drive for leak-free transfer
• Bearings and lifetime: SiC sleeve bearings in product-wetted area for wear-free operation; rolling bearings outside the medium
• Hydraulics: integrated complete axial thrust compensation across the duty field
• Material options: Duplex, nickel-base alloys, spheroidal/steel castings, austenitic castings
• Compliance: ISO 2858, ISO 15783
• Explosion protection: selectable for Zone 1 / Category 2