Rotho® Peristaltic Pump

Rotho® Peristaltic Pump

The Rotho peristaltic pump is a volumetric pump and able to resolve a number of production problems in a variety of industrial sectors.
Thanks to the concrete results achieved in the most diverse production processes, the Rotho has attracted interest from all sector experts.

No alterations to organoleptic qualities

Rotho pumps can transfer fragile chemical products, foods and beverages with great efficiency. Thanks to the delicate transfer process, products are not agitated.
This avoids the formation of unwanted substances and alterations to the product's organoleptic properties, maintaining the integrity indispensable for end product quality.

For example, in the wine-making and olive oil sectors, the Rotho is the only pump able to preserve the intrinsic qualities of wines and musts (whether grape clusters or destemmed grapes), oily must, olive paste and clear oils.

No clogging, no contamination

Only Rotho peristaltic pumps are able to circulate viscous or abrasive liquids and fluids containing suspended solid parts without clogging and without interrupting production.

The Rotho pump is ideal for all liquids which must not be contaminated, or which must not come into contact with mechanical parts as they are too chemically aggressive or dangerous.

Rapid maintenance

Many peristaltic systems use sliding blocks to compress the tube. This means the tube must be immersed in refrigerant liquids to mitigate the friction caused by the blocks compressing the tube.

Rotho technology using rollers on bearings does not require refrigerant liquid in the stator. Maintenance is therefore faster and less wasteful and there is no refrigerant liquid to dispose of.

The Rotho pump also safeguards the quality and hygiene of the product, as there is no refrigerant liquid which could contaminate the product if the tube ruptures.

Ease of use

The Rotho peristaltic pump can be used in numerous applications thanks to its ease of use:

it is self-priming from -9.8 m
it can operate dry
flow is reversible
it can be perfectly sanitised

How does the Rotho peristaltic pump work?

The pump operates on the principle of peristalsis, as used by the human digestive system, which contracts then relaxes a muscle around a tube causing the contents to move through it.

In the pump, an elastomer tube is repeatedly compressed down its full length by rollers. Between one pass of the propelling roller and the next, the tube returns to its original diameter, creating a vacuum which draws in the product to be transferred.

This movement generates a delicate pumping action, avoiding even minimal damage to the product and preventing any form of contamination by eliminating contact with mechanical parts.

The advantages of the Rotho for your production process

In the Rotho pump, the mechanism employed to compress the tube by means of rollers on bearings has a number of advantages

It can operate dry
No refrigerant liquid is needed in the pump casing as no friction is generated by the roller on the surface of the tube, thus prolonging its working life. This is very different from the traditional system in which the surface of the tube is compressed by sliding blocks which must work in a lubricating bath.
Energy-savings
The lack of friction on the tube means that less powerful motors can be used to perform the same work, resulting in less energy consumption.
No product contamination
There is no risk of product contamination if the tube ruptures as there is no refrigerant liquid in the pump.
Immediate leak detection
Because there is no refrigerant liquid in the pump, the safety sensor can detect product leaks caused by tube wear immediately.
Easy tube replacement
Replacing the tube is faster, cleaner, safer and less wasteful as there is no liquid to be evacuated and replaced along with the tube.
Easy flow reversal
The flow can be reversed by reversing the direction of the motor.
Transfer of products containing solid parts
Products containing suspended solid parts measuring up to 45% of the bore of the tube can be transferred.
Transfer of fragile or contaminating products
Fragile, shear-sensitive, pollutant or contaminating products can be transferred.
It can draw up to 98% of full vacuum
No valves or seals
Possibility of CIP and SIP sanitation

Rotho® peristaltic pumps

ask for an offer all models

Retractable roller system

An indispensable accessory for washing, flushing and sanitising tubes. Available for all the MS series and the PSF1 model.

ask for more information learn more

Performance of the Rotho pump

RAGAZZINI s.r.l

Via A. Volta, 8 - 48018 FAENZA (RA) - Italy
Tel. +39 0546 620433
Fax +39 0546 621394
E-mail rotho(at)ragazzini.it
Tax and VAT no. IT00080310394 • Company capital €104000 fully paid up • A.E.R. no.60311 Comp. Reg. Ra 3142 - EXPORT RA 000124