RB

RB pumps, with closed channel impeller, comply with EN ISO 5199 standard.

Passage of suspended solids, highly viscous liquids, low NPSH values and high efficiency are the main features of this series that can achieve great performance levels even in critical conditions. This series can guarantee an excellent suction capacity even in spite of dissolved gases and air, thanks to its big inlet and few impeller blades number.

Process pumps
Closed channel impeller
ISO 5199

Technical information

Use
Handling slightly contaminated liquids in waste-water treatment plants, clean water for cooling towers or condensate recovery plants, viscous liquids in evaporators of food or chemical industry.

Refineries, general industrial service, paper mills, food industry, sugar industry, sea water desalination plants, power stations, steel industries.

Advantages
• Conveying liquids containing suspended solids, such as sludge, debris or viscous liquids.
• Greater resistance to fouling and dirt build-up than standard closed impellers.
• Multi-Channel geometry helps maintain the liquid flow and prevent clogging. High efficiency and Low NPSH.

Modularity
4 different groups of bearing housing for 15 different sizes.

Discharge sizes
From DN 65 to DN 400.

Maximum working pressure
10 bar.

Flow rate
Up to 3.100 m³/h.

Differential head
Up to 70 m.

Temperature
Up to 220°C according to the pumped liquid.

Flange
EN 1092 PN10, on request ANSI B16.5 150# drilled.

Standard materials
Cast Iron, AISI 316, Superduplex (sizes from 80 to 125).

On request materials
AISI 904L and other alloys.

1.450 rpm

960 rpm

Template Elem 1

Sub-1 Elem 1

Sub-1 Elem 2

Sub-2 Elem 1

Sub-2 Elem 2

Template Elem 2

Nosub Elem 1

Nosub Elem 2

Technical features

➊ 1 casing, 2 impellers

Every size of pumps can use a unique casing that both applies to closed impellers (provided with a wearing ring) and open impellers (with replaceable wearing plate).

This versatility allows the pump to be easily used in new plants and processes.

➋ 1 casing cover, 12 seal arrangements

For every size of pump, a unique casing can hold any kind, brand and choice of seal. The seal chamber dimensions are designed to guarantee an efficacious and correct liquid circulation.

By changing a few components, the seal arrangement can be easily modified, thus making the pump ready for new plant or process requirements and reducing the spares stock.

Mechanical Seals comply with EN 12756 standard.

➌ Heavy duty bearing EN ISO 5199

The bearing housing is standardized according to EN ISO 5199 and guarantees a shaft deflection < 0,05 mm and a minimum of 18.000 working hours. It is designed to optimize axial and radial thrusts as to drastically reduce operating temperatures.

All bearing housings are suitable to host the heavy duty version “HD” which is equipped with angular contact bearings and roller bearings.

These series also include a stronger bearing housing able to operate up to 100.000 working hours.

➍ Wearing ring

The pump is provided with a replaceable wearing ring.