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Chemical process pumps

Chemical process pumps

Product catalog summary

Overview
The PROCHEM chemical process pumps are single-stage horizontal centrifugal pumps designed in accordance with UNI EN 22858 standards. They feature an axial inlet and offer different impeller types: closed impeller (RN - RNS series) for clear or slightly cloudy liquids, and recessed open impeller (RKNS series) for solutions with suspended particles. These pumps are engineered for high fluid dynamics efficiency and reliability.

Specifications

Impeller Types: Closed impeller for clear or slightly cloudy liquids; recessed open impeller for solutions with suspended particles.
Materials: High-performance mechanical materials to prevent corrosion.
Bearings: Rolling-contact oil-lubricated bearings for long life and reliability.
Shaft: Heavy-duty pump shaft with low deflection for perfect sealing.
Maintenance: BACK PULL-OUT system for easy maintenance.

Operative Limits

Capacity (Q): Up to 2600 m3/h
Head (H): Up to 140 m
Pressure (P): Up to 16 bar
Temperature (T): From -50°C to +280°C
Diameter (DN): 32 to 300 mm

Applications
The pumps are suitable for use in various industries such as chemical, petrochemical, mining, steelworks, shipyards, pulp and paper, pharmaceutical, textile, food processing, power stations, and desalination plants. They can handle both clear and slightly cloudy liquids (RN, RNS series) and solutions with suspended particles (RKNS series).

Seal Systems

Single Mechanical Seal: Available with or without flush, lubricated by the pumped liquid or an external source.
Double Mechanical Seal: Flushed by clean liquid from an external source.
Soft Packing Seal: Lubricated by the pumped liquid or clean liquid from an external source.

Design Features

RN - RNS Series: Closed impeller design for high efficiency and performance, trapezoidal volute casing to reduce loss and increase efficiency.
RKNS Series: Open impeller design suitable for viscous liquids and solutions with suspended particles, reinforced support for heavy-duty applications.

Additional Options
Special pumps with cooled seal housing, heated casing, and vertical versions are available upon request.

Design and Materials
The pump casing has a trapezoidal volute to reduce losses and increase efficiency. It uses rolling-contact bearings for long life and reliability, with optional reinforcement according to ISO 5199 standards. The bearing support is robust and lubricated with oil. The impeller has an anti-unscrew device, and the shaft is protected for heavy-duty service.

Technical Data
The document provides detailed technical data, including pump series, material specifications, pressure and temperature limits, and execution types. It lists materials used for various components like casing, cover, wear ring, shaft, impeller, shaft sleeve, and nut cap, with references to relevant standards.

Performance and Dimensions
The document includes performance charts showing flow rates and head measurements in both metric and imperial units. It also provides overall dimensions for different support types and maximum dimensions for electric motors used in standard applications.

Standards and Compliance
The pumps comply with tolerances according to UNI EN ISO 9906 Grade 1. Flanges are specified according to UNI EN 1092 standards for both cast iron and steel pumps.

Contact Information
The document lists contact details for Robuschi's head office and various international branches.

Catalog excerpts

Pompe centrifughe per chimica Chemical process pumps Pompe centrifughe per chimica Chemical P R O pumpsE M process C H

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Le pompe PROCHEM sono pompe centrifughe orizzontali monostadio ad aspirazione assiale, progettate in accordo alle norme UNI EN 22858. In base alla conforma-zione della girante sono disponibili: serie RN - RNS girante chiusa serie RKNS girante aperta arretrata Un mix di componenti innovativi, che assicu-rano un elevato rendi-mento fluidodinamico: - i cuscinetti sono volventi, lubrificati ad olio, selezionati per garantire lunga durata ed elevata affidabilita; - l'albero dimensionato per servizi pesanti assicura elevata affidabilita, basse deflessioni ed un perfetto funzionamento della tenuta;...

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La girante delle pompe RN, RNS e del tipo chiuso, adatta a convogliare liquidi puliti o legger-mente torbidi, chimica-mente inerti od aggressivi, permette di raggiungere, anche grazie alle sezioni di passaggio increme-ntate, una elevata effi-cienza energetica della pompa congiuntamente a prestazioni eccellenti. Il corpo della serie RNS ha un disegno innovativo con voluta trapezoidale per diminuire le perdite ed aumentare ulterior-mente l'efficienza della macchina. A seconda delle necessity e possibile utilizzare, su 1° e 2° supporto, il coperchio corpo con camera conica per tenuta meccanica singola...

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La girante delle pompe RKNS e del tipo aperto adatta a convogliare, senza alcun pericolo di intasamento, soluzioni con cristalli in sospensione, liquidi torbidi e/o viscosi, con corpi solidi in sospensione od impurita filamentose, chimicamente inerti od aggressivi. La girante arretrata, unitamente al nuovo disegno del corpo, permette di raggiungere una piu alta efficienza energetica della pompa congiuntamente ad elevate prestazioni. La supportazione rinforzata con albero protetto risulta adatta in particolar modo a utilizzi gravosi, quali l'elaborazione di liquidi densi e/o viscosi, garantendo...

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Le pompe PROHEM possono essere impiegate nell’industria The PROCHEM pumps can be used in the chemical and chimica e petrolchimica, negli impianti minerari e petrochemical industries, in mines and steelworks, in siderurgici, nel settore cantieristico, nell’industria cartaria shipyards, in the pulp and paper industry, in the e della cellulosa, farmaceutica, tessile ed agroalimentare, pharmaceutical industry, in textile and food processing nelle centrali termoelettriche e negli impianti di industries, in power stations and in desalination plants, - liquidi puliti o leggermente torbidi (RN, RNS)...

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SEAL SYSTEMS Tenuta meccanica singola Tenuta meccanica singola senza flussaggio (PLAN 02), lubrificata dal liquido pompato (PLAN 11) o da fonte esterna (PLAN 32) con camera di tenuta conica (1˚ e 2˚ supporto) o camera di tenuta cilindrica (3˚, 4˚, 5˚ e 6˚ supporto). Single mechanical seal Single mechanical seal without flush (PLAN 02), lubricated by the pumped liquid (PLAN 11) or from an external source (PLAN 32) with conical shaped seal housing (1st and 2nd support) or with cylindrical shaped seal housing (3rd, 4th, 5th and 6th support). Tenuta meccanica singola con quench posteriore Tenuta...

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Girante chiusa disegnata per ottenere un’elevata efficienza energetica congiuntamente ad elevate prestazioni. Coperchio corpo con camera conica per tenuta meccanica semplice provvista di dispositivo per la deflessione del flusso circonferenziale che crea un ricircolo radiale prolungando notevolmente la vita della tenuta meccanica o coperchio corpo con camera cilindrica per tutte le versioni con tenuta meccanica doppia. Closed impeller designed to allow the pumps to reach high efficiency together with high performance. Casing cover with conical shaped housing for simple mechanical seal equipped...

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1 Girante chiusa disegnata per ottenere un’elevata efficienza energetica congiuntamente ad elevate prestazioni. Closed impeller designed to allow the pumps to reach high efficiency together with high performance. Possibilità di montare tenuta meccanica semplice, bilanciata, doppia, tandem, a cartuccia, con quench. Corpo a voluta trapezoidale capace di diminuire le perdite ed aumentare ulteriormente l’efficienza della macchina. Cuscinetti volventi selezionati per garantire lunga durata ed elevata affidabilità. Possibility of fitting mechanical seal single, balanced, double, tandem, cartridge seals,...

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Girante chiusa disegnata per ottenere un'elevata efficienza energetica congiuntamente ad elevate prestazioni. Closed impeller designed to allow the pumps to reach high efficiency together with high performance. Possibility di montare tenuta meccanica semplice, bilanciata, doppia, tandem, a cartuccia, con quench. Possibility of fitting mechanical seal single, balanced, double, tandem, cartridge seals, with quench. Cuscinetti volventi selezionati per garantire lunga durata ed elevata affidabilita. Rolling-contact bearings selected to grant long life and high reliability. Dispositivo anti svitamento...

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Girante chiusa disegnata per ottenere un’elevata efficienza energetica congiuntamente ad elevate prestazioni. Possibilità di montare tenuta meccanica semplice, bilanciata, doppia, tandem, a cartuccia, con quench. Cuscinetti volventi selezionati per garantire lunga durata ed elevata affidabilità. Closed impeller designed to allow the pumps to reach high efficiency together with high performance. Possibility of fitting mechanical seal single, balanced, double, tandem, cartridge seals, with quench. Dispositivo anti svitamento della girante. Rolling-contact bearings selected to grant long life and...

Open the catalog to page 11

Chemical process pumps

Chemical process pumps

Catalog excerpts

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