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Munsch NP Standardised Chemical Pump

Horizontal pump with mechanical seal

The Munsch NP series are designed to meet chemical process industry standards and are ideally suited to the safe pumping of fluids posing an environmental or health hazard such as acids, alkalis, solvents and chemically contaminated fluids in the presence or absence of solids. The series has been specifically developed for applications in demanding tough service environments.

Typical applications include the chemical and metal finishing industries, steel and stainless-steel pickling lines, evaporation and regeneration units, flue gas scrubbing downstream of waste incinerators as well as exhaust air cleaning and scrubber effluent treatment.

The NP range includes the metal free Munsch REA mechanical seal, specifically developed for non-metallic pumps to ensures maximum operating reliability and a long service life while being easy to assemble and repair. Models are available with either a single or double seal and offer easy conversion.

Ceramic components and a variety of flushing options make the pumps suitable for applications involving high solid loads.


Horizontal centrifugal pump, process pump design; casing and fitting dimensions to EN 22858/ISO 2858; complemented by size 40-25-160 and 250-200-400

The NP Series pumps meet the requirements of EU Directive No 94/9/EG for use in explosion hazard zones.

093 Munsch Mechanically Sealed NP image 1
Video Thumbnail
Video Thumbnail
093 Munsch Mechanically Sealed NP image 1

Performance Data

  • Pump capacity: up to 1200 m³/h
  • Total differential head: up to 100 m
  • Operating temperature [t]: -20°C up to +110 °C
  • Operating pressure [p]: up to 10 bar
  • Diameter of discharge nozzle: DN 25 up to DN 250
  • Drive rating [P]: up to 200 kW

Features and Benefits

  • Robust metal armour accommodates all allowable system pressures and piping loads
  • Impeller types: closed and semi-open
  • Back pull-out design
  • Quick and precise pump assembly, no adjustment or alignment work needed for the mechanical seal
  • Single or double mechanical seals available
  • Flexible flushing connections that can be retrofitted at any time.
  • Suitable for applications with high solid load through ceramic components and a variety of flushing options
  • Optimum seal chamber geometry without dead flow pockets ensures continuous liquid movement
  • Models
  • Materials
  • Performance Charts
  • Optional Extras
  • 40-25-160
  • 50-32-160
  • 50-32-200
  • 65-40-200
  • 65-40-250
  • 65-40-315
  • 65-50-160
  • 80-65-160
  • 80-50-200
  • 80-50-250
  • 80-50-315
  • 100-65-200
  • 100-65-250
  • 100-65-315
  • 125-80-200
  • 125-80-250
  • 125-100-200
  • 125-100-250
  • 125-100-315
  • 150-125-250
  • 150-125-315
  • 200-150-400
  • 200-200-400
  • Main material: Polypropylene, PE-UHMW and PVDF
  • Impeller:  Polypropylene, PE-UHMW and PVDF
  • Shaft: Steel (plastic coated)
  • Mechanical seal: Silicon carbide
  • Base plate
  • Levelling bolts as an alternative to concrete pads
  • Coupling with / without spacer sleeve
  • Coupling guard
  • Priming pot
  • Thermosiphon buffer system
  • Quench tank
  • Motor overload switch
  • Casing drain

Enquire about this product

Send a message to the Chem Resist sales team for more information.

Alternatively, contact Neil Williams on +44 1924 499466 or [email protected].

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