Positive displacement pumps

Volumetric pumps represent a fundamental category of hydraulic machines designed to transfer fluids through the mechanical movement of mobile elements that create sealed chambers of variable volume. This technology, at the foundation of Nova Rotors solutions, guarantees precise and controlled fluid transfer, making them indispensable in numerous industrial applications where precision and reliability are essential requirements.

The operating principle of volumetric pumps is based on the creation of sealed chambers that increase and decrease in volume cyclically, generating fluid suction and discharge. Unlike centrifugal pumps, volumetric pumps maintain constant flow rates regardless of operating pressure, a characteristic that makes them particularly suitable for applications requiring precise dosing and transfer of viscous fluids or those containing solid particles.

Nova Rotors has developed various volumetric pump technologies, each optimized for specific application needs. The rotation of mobile elements within the pumping chamber creates uniform and continuous flow, eliminating typical pulsations of other systems and ensuring accurate control of the transfer process.

Types of Nova Rotors volumetric pumps

Progressive cavity single-screw pumps

Single-screw pumps use a helical rotor that rotates within an elastomeric stator, creating sealed chambers that progressively move along the pump axis. This configuration guarantees:

• Gentle transfer of sensitive fluids without product damage
• Effective handling of high viscosity liquids containing solid particles
• Precise dosing with constant flow rates regardless of pressure
• Application versatility in food, pharmaceutical and chemical sectors

The Diamond series from Nova Rotors represents excellence in this category, offering solutions for both transfer and precision dosing, with certifications that guarantee safe use in the food and pharmaceutical sectors.

Twin-screw pumps

Twin-screw volumetric pumps employ two synchronized rotors that rotate in opposite directions within a shaped chamber, creating uniform fluid transfer without contamination. Nova Rotors' Raptor technology excels in sanitary applications where absolute hygiene is fundamental.

These volumetric pumps are characterized by smooth surfaces completely free of dead zones, enabling CIP cleaning and SIP sterilization operations with maximum effectiveness. Compliance with 3A, CE 1935/2004, HACCP, FDA, EHEDG and GMP standards positions them as the ideal solution for food and pharmaceutical industries.

Floating stator pumps

Floating stator volumetric pumps represent an advanced engineering innovation where the stator can move freely within the pumping chamber. This characteristic gives Nova Rotors' Wobble technology exceptional operational versatility, allowing dynamic adaptation to operating conditions.

The floating design enables effective handling of complex, viscous fluids containing solid particles, maintaining optimal performance even under variable operating conditions. This flexibility significantly reduces plant downtime and ensures production continuity.

Advantages of volumetric pumps

Nova Rotors volumetric pumps offer numerous advantages over other pumping technologies, making them the preferred choice for demanding industrial applications. Constant flow rate regardless of pressure ensures stable and repeatable processes, fundamental for quality control in food and pharmaceutical sectors.

The ability to handle high viscosity fluids, from food creams to industrial oils, significantly expands the application field. Nova Rotors volumetric pumps gently transfer sensitive products preserving their organoleptic characteristics, essential for wine-making applications and the dairy industry.

The energy efficiency of volumetric pumps contributes to optimizing operating costs, while robust construction ensures long operational life even under the most severe conditions. Ease of maintenance and availability of certified spare parts complete the picture of economic advantages.

Volumetric pumps: industrial application sectors

Volumetric pumps for food and beverage industry

In the food sector, Nova Rotors volumetric pumps are used for transferring doughs, creams, sauces and beverages, ensuring maximum hygiene and preservation of organoleptic qualities. Food contact certification and ease of sanitization make them compliant with the most stringent HACCP regulations.

The wine industry particularly benefits from volumetric pump characteristics for gentle transfer of musts and wines, avoiding oxidation and preserving aromas. Controlled flow management enables precise racking and filtration operations.

Volumetric pumps for pharmaceutical and cosmetic sector

Sanitary volumetric pumps represent the standard for transferring pharmaceutical active ingredients, cosmetic creams and gels. GMP compliance and SIP sterilization capability guarantee the highest purity standards required by international pharmaceutical regulations.

Precise dosing ensured by volumetric pumps is essential in medicine and cosmetic production, where consistency and uniformity of the final product depend on transfer process precision.

Volumetric pumps for water treatment and environment

In the environmental sector, Nova Rotors volumetric pumps effectively handle sewage sludge, industrial waste liquids and fluids containing solid particles. The ability to pump abrasive materials without compromising performance makes them ideal for wastewater treatment plants.

Precise dosing of chemical additives for water treatment is guaranteed by volumetric metering pumps, enabling accurate control of flocculation and disinfection processes.

Volumetric pump selection criteria

Choosing the most suitable volumetric pump requires careful analysis of fluid characteristics to be transferred, operating conditions and specific application requirements. Nova Rotors supports customers in this crucial phase through specialized technical consulting services.

Physical fluid characteristics, such as viscosity, temperature, presence of solid particles and chemical properties, determine selection of the most appropriate volumetric pump type. Required flow rate, necessary head and dosing precision complete the sizing parameters.

Regulatory requirements of the destination sector significantly influence choice, especially for food, pharmaceutical and chemical applications where specific certifications are mandatory. Installation environment, utility availability and space constraints contribute to defining the optimal configuration.

Maintenance and technical assistance for volumetric pumps

Nova Rotors volumetric pumps are designed to ensure ease of maintenance and long operational life. The modular design enables rapid component replacement interventions, minimizing plant downtime and optimizing management costs.

Scheduled preventive maintenance is essential to preserve volumetric pump performance over time. Nova Rotors provides customized maintenance plans and certified original spare parts, ensuring operational continuity and compliance with industry regulations.

Nova Rotors specialized technical support accompanies customers throughout the entire volumetric pump lifecycle, from selection and sizing phases to extraordinary maintenance interventions, always ensuring the best performance and maximum operational reliability.