SPIRAL VANE PUMPS
RACN SERIES
Horizontal single stage centrifugal pumps with overhung impeller and axial suction, constructed using the "Back pull-out system" and available with five different sizes of support.
Main technical features

• Flow rate up to 1400 m3/h
• Discharge head up to 80 m
• Working pressure up to 10 bar
• Working temperature from -30 to +170°C
• Size from 80 to 300 mm
• Flanges drilling UNI PN10

Advantages

• The semi-open impeller, which is positioned further back, with wide inter-vane passages makes it possible to convey, without any danger of blockages, dense and/or highly viscous liquids with solid particles in suspension, solutions with high percentages or dry matter, and chemically inert or aggressive liquids.
• Very high suction capacity
• Extremely low NPSH values
• Particularly advantageous from the economic point of view for plants with low NPSH values

Fields of application

• The paper industry, conveying of paper pulp up to concentrations of 15% dry residue
• The chemical wood pulp industry, conveying of cellulose and wood pulp
• The farm-food industry
• The sugar industry
• The chemical industry

Materials
The RACN pumps can be made both of cast iron or AISI 304 or AISI 316 L stainless steel.
Shaft seal
The RACN pumps can be equipped with various types of seal:

• Soft packing with liquid barrage
• Mechanical seals (simple, balanced, double, cartridge, with quench ...,) with standard circulation and flushing in accordance with the API Standard 610 norms.
• Hydrodynamic seal: this is an innovative seal comprising a secondary impeller installed behind the main impeller which makes it possible to operate with particularly abrasive liquids or with solutions that easily deposit the solute.

Special productions
On request the pumps can be supplied:

• With cooled sealed chamber
• In vertical submerged version