Standardized chemical pump NP and close-coupled chemical pump NP-B

Horizontal centrifugal pump with volute casing and single-entry, single-stage radial Impeller. Casing and fitting dimensions to EN 22858/ISO 2858, complemented by size 40-25-125, 250-200-400 and 300-250-400 pumps.

Type NP/NP-B standardized chemical pump

The NP pump series is excellently suited to pumping tasks in the chemical industry, electroplating plants, metallurgical industries, steel and stainless steel pickling lines, evaporation and regeneration units, wet flue gas cleaning systems downstream of waste incinerators as well as in exhaust air scrubbing and industrial waste water treatment. The MUNSCH REA mechanical seal, specifically developed for non-metallic pumps, ensures maximum operating reliability and a long service life while being easy to assemble and repair. The main construction material of the mechanical seal is silicon carbide. No other material offers better corrosion and wear resistance.

Corrosion resistant plastic casing

Sturdy, single-piece plastic casing and solid casing cover provide diffusion-tight containment, eliminating secondary sealing problems; superior mechanical wear resistance for maximum operating reliability in chemically aggressive and abrasive environments.

Silicon carbide seal rings

Rotating and stationary seal rings are fabricated from this advanced silicon carbide, that not only offers extreme abrasion resistance but is also resistant to virtually all acids and alkalis.

Various impeller designs

Impeller available in closed and semi-open designs.

  • Continuous flushing
  • Shutdown flushing
  • Spring chamber flushing
  • Volute casing drain

Series Pump capacity [Q]  Differential head [H] Operating temperature [t] Operating pressure [p] Discharge nozzle Motor rating
NP up to 1.200 m³/h up to 100 m from -20°C to +110 °C up to 10 bar DN 25 to DN 250 up to 200 kW
NP-B up to 160 m³/h up to 70 m from -20°C to +110 °C up to 10 bar DN 25 to DN 100 up to IEC size 132


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