Larox Severe Duty Industrial Series

Design

The operating principle of Larox pumps is based on "peristaltic effect". As a cylindrical rotor rolls along the hose, a process medium gets pushed forward through the hose.  At the same time the hose behind the compression point reverts to its original round shape creating a suction at the pump inlet port and the hose bore re-fills with pumped medium. No backward flow can occur as the hose is squeezed tight by the roller.

The elastomer hose forming a full circle inside the casing is compressed only once per pump revolution. The hose is the only part of the pump in contact with the pumped medium, as well as the only wearing part. Because the pump is seal-less it is not damaged even if runs dry for longer periods of time. Due to the very smooth peristaltic operation principle, hose pumps are very gentle and do not stir or shear the pumped medium.

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Benefits

• Hose is compressed only once per revolution. As a result, the hose serves up to five times longer than in shoe design pumps.
• Larox pumps can run continuously at high speed without heating or damage to hose or bearings, as compared with shoe design peristaltic pumps.
• Rolling over the hose creates less friction, and therefore, only a fraction of glycerine required by shoe design peristaltic pumps. Glycerine is not needed for heat dissipation.
• No U-turns are necessary. Larox inlet and outlet mounting are inline similar to a usual pumping scheme.
• Larox motor size is typically ½ the size of traditional shoe design peristaltic pump motors, saving thousands of dollars annually in energy consumption.
• At low speeds Larox motor will not trip due to drag like shoe design pumps.
• Floor space requirements for Larox pumps are typically 1/3 that of conventional shoe hose pumps. The annual operating cost savings compared to shoe design peristaltic pumps is often as much as the cost of a new pump.
• Ideal for accurate dosing, metering and flow control as the pump discharge flow does not depend on the pipeline pressure.
• Reversible rotation.
• No mixing or shearing of the medium.
• Easy installation and maintenance.

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Typical Applications

Larox peristaltic pumps have proven their superiority in a wide range of industries and applications. Larox heavy duty pumps are a perfect solution for dosing and industrial transfer of various slurries with high solid content, abrasive, aggressive, corrosive, viscous, and crystallizing media.

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Specifications

Larox pumps come in two types: LPP (for general purposes) and LPP-D (for dosing applications). The general purposes LPP pumps are available in hose sizes of 1", 1.5", 2.5", and 3". The LPP can also be equipped with a control unit. Please see Auxiliaries and Expendables for a list of accessories.

The dosing LPP-D pumps are available in hose sizes of 0.5", 0.75", and 1".

For optional helical bevel geared motors with electro-mechanical brake please proceed to ordering information.

Available hose materials:

Please go to ordering information for different hose diameters and catalogue numbers.

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Auxiliaries and Expendables

LPP pumps:

• Optional helical bevel geared motors with electro-mechanical brake.
• Electric cooling fan (required when turn down ratio in control use (VFD) bigger then 1:2.5 from nominal flow).
• Drive controls:

– Nord Gear SK 700-series frequency inverter.
– Nord Gear Vector MC-series frequency inverters with control panel MC.
– Nord Gear SK300-series integrated frequency inverter.

• Hose leak detector.
• Pressure transmitter.
• Revolution detector.
• Connector for pressure transmitter.
• Connector hose.
• Spare hoses.
• Genuine hose lubricant.

LPP-D pumps:

• Optional helical shaft geared motors with termistors TF.
• Electric cooling fan (required when turn down ratio in control use (VFD) greater than 1:2.5 from nominal flow).
• Drive controls:

– Nord Gear SK 500-series frequency inverter.
– Nord Gear Vector MC-series frequency inverters with control panel MC.
– Nord Gear SK300-series integrated frequency inverter.

• Hose leak detector.
• Revolution detector.
• Spare hoses.
• Genuine hose lubricant.

Please refer to ordering information for details and catalogue numbers.

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Documentation

	LPP Pumps	LPP-D Pumps
Brochure	Metric Units; Imperial Units	Metric Units; Imperial Units
Datasheets	Metric Units: pump types DN25, DN40, DN65, DN80 Imperial Units: pump types DN1", DN1.5", DN2.5", DN3"	Metric Units: pump types DN15, DN20, DN25 Imperial Units: pump types D0.5", D0.75", D1"
Manuals	Full version; Abridged	Full version; Abridged

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Ordering Information

We represent and distribute Larox products across western Canada, including the provinces of British Columbia, Alberta, Saskatchewan, and Manitoba. To download the detailed list of auxiliaries, expendables, their specifications and catalogue numbers (MS Excel format) please click the links below:
• LPP pumps;
• LPP-D pumps.

Do not hesitate to contact us if you have any questions or wish additional information.

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