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High-pressure Vertical Multistage Centrifugal Pumps

The Lubi LCRNHS, LCRH and LCRNH series pumps are high-pressure, non-self-priming, vertical multistage centrifugal pumps with axial suction and discharge ports .

The high-pressure is achieved in two ways:

1.) SINGLE PUMP SYSTEM:
In this system a standard vertical multistage centrifugal pump is fitted with a high-speed Lubi motor with integrated frequency converter.
– Type LCRNHS
– Available models: LCRNHS 1 & LCRNHS 3

2.) TWO PUMP SYSTEM (FEED PUMP + HIGH-PRESSURE PUMP):
The pump consist of 2 pumps and they are installed in series. The first pump is a Feed pump which is standard vertical multistage centrifugal pumps i.e. LCR, LCRN. The second pump is a High- pressure pump i.e LCRH, LCRNH especially designed for high pressure. A feed pump is connected with a high-pressure pump in series and thus high-pressure is achieved.
– Type LCRH and LCRNH
– Available models: LCRNH 3 to LCRNH 150
LCRH 32 to LCRH 150

The high-pressure pump comes in two designs depending on pump size.

” LCRNHS 1, 3 & LCRNH 2 to 20: The chamber stack is upside- down as compared to a standard LCRN pump.
” LCRH, LCRNH 32 to 150: Standard LCR, LCRN pump with or without bearing flange.

The pressure generated by the high-pressure pump makes special demands to the design. This leaflet primarily describes the following aspects where the high-pressure pump is different from the standard pump:

” design
” operating conditions
” performance curves
” dimensions.

The performance curves show the high-pressure pump connected in series with a standard pump with various numbers of stages.

These pumps are suitable for a various types of applications demanding high-pressure, reliable and cost-efficient supply.

These pumps are suitable for a wide variety of applications from pumping of potable water to the pumping of chemicals.

Typical applications are as below:

Pressure boosting
• Process water systems
• Washing and cleaning systems
• High-pressure wash down systems
• Boiler feed and condensate systems.

Water treatment
• Ultra-filtration systems
• Reverse osmosis systems.

Flow range : 0.8 to 180 m³/h
Max. operating pressure : 50 bar
Ambient temperature : Max. + 40°C 
Liquid temperature range : -30°C to +120°C 


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