- Continuous flushing
- Shutdown flushing
- Spring chamber flushing
- Volute casing drain
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.
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.
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.
Impeller available in closed and semi-open designs.
|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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We have supplied durable pumps and metering systems for applications such as the hydrocracking process for over 50 years. Petrochemicals generate starting products for the manufacture of plastics, pharmaceuticals, colorants, detergents, and other products. Contact our experts and allow us to provide you with detailed information about metering and pumping solutions for the hydrocracking process!More Details
When critical, environmentally hazardous, toxic, or flammable fluids and suspensions need to be reliably conveyed or metered in high-pressure processes, there is no alternative to hermetically sealed metering pumps, process diaphragm pumps, and metering systems from LEWA. Hermetically sealed LEWA pumps with pressures up to 1200 bar are the first choice for the production of chemical intermediate and end products. Contact our experts and let us advise you about your individual chemical pump or system solution!More Details
We offer you special expertise for all compounding processes in the plastics processing industry (addition of waxes, flame retardants, and lubricants). Contact our experts! We're happy to give you advice about metering and pumping solutions for the plastics industry such as in polyethylene processing.More Details
Processes with strict quality and hygiene requirements, such as GMP or the need to avoid preservatives, require the right equipment. We support you in the selection and the design of hygienic components and systems for producing personal care products. Contact our experts and let us advise you – we will work with you to develop customized metering solutions for your process, such as for manufacturing personal care products.More Details
LEWA offers customized solutions and references for almost all industries in which processes require exact metering or the reliable conveyance of fluids. As specialists in fluid handling, we of course also have experience in areas outside of our key markets.More Details