Question 1

FAQ (Frequently Asked Questions): Progressive Cavity Pumps

Accepted Answer

1. Is the pump reversible? (Up to what pressure?)Yes, our progressive cavity or single screw pumps are reversible. The flow direction can be reversed based on operational needs, but it is recommended to use it only in the direction set during the order. The maximum pressure depends on the specific model (pumping stage) and the application characteristics, but generally, our pumps are designed to handle high pressures efficiently with proper precautions up to 48 bar in one direction and with balanced shafts up to 12 bar in the opposite direction, depending on the chosen model.2. Is the pump self-priming?Yes, our pumps are self-priming. Thanks to a very good NPSH (Net Positive Suction Head), they can self-prime without the need for a separate priming system, depending on the specific application parameters. This makes them ideal for applications where the pump must draw liquids from a certain height or when air is present in the fluid. Keep in mind that this varies depending on the type of fluid being pumped, viscosity, etc.3. Do the pumps work at low pressures?Our progressive cavity and single screw pumps are designed to maintain high performance even at low pressures. However, efficiency may vary depending on specific application parameters. For low-pressure applications, we recommend carefully considering the type of fluid and process requirements.4. Is the pump suitable for dosing?Yes, Nova Rotors offers a range of pumps suitable for dosing. Thanks to their precision and ability to handle fluids with variable viscosity, they are ideal for applications requiring precise and continuous dosing.5. What are the advantages of progressive cavity or single screw pumps?Progressive cavity or single screw pumps offer numerous advantages, including the ability to handle viscous fluids and suspended solids, continuous and stable flow, and a low pulsation level. They are particularly suitable for industrial and environmental applications, ensuring efficiency and reliability even in challenging conditions. 6. How can I choose the right pump for my application?The choice of the pump depends on various factors, including the type of fluid to be pumped, viscosity, required flow rate, operating pressure, and environmental conditions. Our technical team is available to help you select the most suitable pump for your needs, providing tailored advice for each type of application.7. Are Nova Rotors pumps suitable for sludge treatment?Yes, our pumps are ideal for transferring sludge, including dewatered and high-viscosity sludge. Thanks to their ability to handle difficult fluids, they are particularly useful in wastewater treatment and other industrial applications.8. Are progressive cavity pumps suitable for food-grade liquids?Yes, our progressive cavity pumps are perfectly suited for transferring food-grade liquids. They are designed to ensure high hygiene standards and preserve product quality during transfer. The pumps are made with certified, easy-to-clean materials to ensure compliance with food safety standards.9. Can the pumps handle viscous products at high pressure?Yes, our progressive cavity pumps can handle viscous fluids at high pressures. Their robust structure and smart design allow efficient transfer of high-viscosity fluids such as pastes, creams, and dense materials, ensuring consistent performance even under pressure.10. Can the pumps suction liquids containing solid particles or pieces of material?Yes, progressive cavity pumps are ideal for suctioning liquids containing suspended solids or material pieces. Their ability to handle fluids with solid particles makes them perfect for applications such as wastewater treatment, food industry, and other industrial uses where solids are present in the fluid.11. Can the pumps run dry?No, progressive cavity pumps are not designed to run dry. Running without liquid can cause significant damage to internal parts, such as the rotor and stator. However, it is possible to add dry-running protection devices, such as level detection sensors and alarm systems.12. Can accessories be added to the pumps?Yes, accessories such as flow, temperature, and pressure sensors, recirculation bypasses, and other devices can be added to optimize performance and ensure safe and efficient operation.13. Are the pumps suitable for ATEX risk environments?Yes, our progressive cavity pumps are designed for use in ATEX risk environments. We offer pumps compliant with ATEX European Directive 2014/34/EU, ensuring safety in explosion-risk areas.

Question 2

FAQ (Frequently Asked Questions): Twin ScrewPumps

Accepted Answer

1. Is the HTS twin screw pump reversible? (Up to what pressure?)Yes, our HTS twin screw pumps are reversible. The flow direction can be inverted according to operational needs. The maximum pressure depends on the specific model and application characteristics, but generally, these pumps are designed to efficiently handle high pressures, up to 25 bar, depending on the selected configuration.2. Is the pump self-priming?HTS twin screw pumps have excellent self-priming capability. However, it is important to consider the application specifics, as efficiency depends on the fluid viscosity and operating conditions.3. Do HTS twin screw pumps work at low pressures?HTS pumps are mainly designed for low and medium-pressure applications but still perform well at high pressure, provided the parameters are properly configured. Their ability to maintain a stable and continuous flow makes them ideal even for low-pressure conditions.4. Is the pump suitable for dosing applications?Yes, HTS twin screw pumps can also be used in dosing applications. Thanks to their high precision and flow control, they are ideal for processes requiring an exact and consistent fluid distribution, such as in the chemical and food industries.5. What are the advantages of HTS twin screw pumps compared to other solutions?HTS twin screw pumps offer numerous advantages, including continuous and constant flow, low pulsations, and greater capacity to handle viscous fluids with suspended solids. They are particularly suitable for applications requiring high performance and reliability, even in challenging working conditions, such as water treatment or industrial environments. 6. How can I choose the right HTS twin screw pump for my application? The choice of pump depends on various factors, including the type of fluid to be pumped, viscosity, required flow rate, operating pressure, and environmental conditions. Our technical team is available to advise you on the most suitable model for your needs, offering personalized consultations. 7. Are HTS pumps suitable for sludge treatment?No, HTS twin screw pumps are ideal for highly hygienic sectors, even with high viscosity. Their design allows them to transfer difficult fluids, including those with high solid concentrations, making them ideal for food applications with fruit pieces or solid food parts. 8. Are HTS twin screw pumps suitable for transporting food-grade liquids?Yes, HTS pumps are suitable for food applications, thanks to their materials and design specifications that ensure hygiene, safety, and product quality. They are designed to meet food safety standards, with easy-to-clean and corrosion-resistant materials. 9. Can the pumps handle high-pressure viscous fluids?Yes, HTS twin screw pumps are designed to handle highly viscous fluids under high pressure. Their robust structure and twin screw design allow efficient handling of dense and viscous fluids, ensuring a consistent flow even under elevated pressure. 10. Can the pumps suction liquids containing solids or solid particles?HTS twin screw pumps can suction liquids with suspended solids, making them ideal for industrial applications dealing with fluids containing particles or abrasive solids. Their geometry and design allow them to handle particularly demanding fluids, such as those from chemical and pharmaceutical processes. 11. Can the pumps run dry?HTS twin screw pumps can run dry for short periods. However, prolonged operation without fluid can damage critical components such as screws and seals. Protection devices such as level sensors and alarms can be integrated to prevent dry-running damage. 12. Can accessories be added to the pumps?Yes, various accessories can be added to HTS twin screw pumps to improve performance and better adapt to specific application needs. Common accessories include flow, temperature, and pressure sensors, recirculation bypass systems, and other devices to optimize operational efficiency and safety. 13. Are the pumps suitable for ATEX-risk environments?No, at present, our HTS twin screw pumps are not designed for use in ATEX (Explosive Atmosphere) environments. They are in the process of being certified under the European Directive 2014/34/EU. However, the motors coupled with the pump can be ATEX-certified, ensuring safety in areas where explosive or hazardous atmospheres may be present. 14. How does the pump interact with the products?HTS twin screw pumps ensure gentle product transfer thanks to their design, which minimizes mechanical stress. 15. What is the shear rate?The shear rate is very low compared to other pumping technologies, making them ideal for shear-sensitive fluids such as emulsions, creams, solutions with solid particles, or food and cosmetic products. 16. Does the pump work like a centrifugal pump?No! The product movement is linear, not centrifugal. Unlike centrifugal pumps, which generate flow through centrifugal force, twin screw pumps operate on a volumetric principle, ensuring a constant, pulsation-free flow with greater suction capacity even with viscous fluids.

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The Nova Rotors solution guide: quick and detailed answers for every need

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The Nova Rotors solution guide: quick and detailed answers for every need

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