In the most demanding industrial environments—such as Oil & Gas, power generation, chemical industry, food processing, or data centers—handling complex fluids requires pumping solutions that combine precision, robustness, and ease of maintenance.
Leistritz screw pumps built to API 676 standards are among the most reliable and efficient responses to these challenges. Manufactured to the highest international standards, these pumps ensure constant flow, low pulsation, and extended service life even under severe operating conditions.
Screw Technology: Operation and Key Benefits
Unlike other technologies like centrifugal or piston pumps, screw pumps provide linear, constant, and pulsation-free flow. This translates into multiple advantages: less wear on components, reduced vibration and noise, and greater stability in applications where precision is critical.
Their operation is based on two or three intermeshing screws that axially displace the fluid. This mechanism allows the handling of high-viscosity liquids, shear-sensitive products, and even mixtures containing solid particles in suspension. Screw pumps are ideal for media such as fuel, thermal oils, polymers, additives, lubricants, or even food products like honey or dense sauces.
API 676 Standard: Guarantee of Reliability and Safety
API 676 is the international reference standard for rotary positive displacement pumps in the oil and gas industry. It defines stringent requirements for mechanical design, materials, tolerances, performance under pressure, and reliability in extreme operating conditions.
Leistritz pumps manufactured to this standard—such as the L3MG range and the innovative FLEXCORE series—ensure compatibility with hazardous fluids, corrosion resistance, easy inspection, and minimal risk of leaks. API compliance is also a key technical factor in tenders, audits, and approval processes with large companies.
FlexCore: Optimized Maintenance and Modular Design
One of Leistritz’s major recent innovations is the FLEXCORE series. Its main advantage is a replaceable cartridge design: the active module can be replaced internally without disassembling the pump body or disconnecting the piping. This reduces downtime, simplifies maintenance, and prevents reinstallation errors.
Its modular architecture, with 90° adjustable connections, makes it especially suitable for compact setups, skid integration, portable systems, or tight spaces. It also covers a broad operational range: from 1.8 to 149 GPM, with pressures up to 40 bar and temperatures up to 180 °C.
Comparison with Other Pumping Technologies
Compared to other positive displacement technologies (like lobe or piston pumps), screw pumps deliver better performance with variable viscosities, more continuous flow, and less maintenance due to reduced contact between moving parts.
Compared to centrifugal pumps, screw pumps do not lose efficiency when suction pressure drops or when the medium contains air or dissolved gas. They also do not require frequent priming or auxiliary systems to avoid cavitation.
Applications in Industrial Sectors
Leistritz API 676 pumps are found across many industries where process continuity is critical:
- Oil & Gas: fuel loading and unloading, burner feeding, heavy oil pumping.
- Chemical: additive dosing, polymer transfer, viscous mixture recirculation.
- Energy: turbine lubrication, feeding industrial heating and cooling circuits.
- Food: pumping dense products with hygienic control.
Sistemiza: Technical Integration, Support, and Customization
At Sistemiza, we don’t just supply Leistritz pumps. Our focus is on designing complete solutions tailored to each client’s needs. From hydraulic sizing to integration into automated systems, we offer full-service engineering.
We also develop special configurations under an ETO (Engineering To Order) approach, such as plug & flow systems for critical applications.
Conclusion
In industrial environments where errors are not an option, choosing the right pump cannot depend solely on price or availability. It requires experience, technical support, and long-term vision.
Leistritz API 676 pumps provide the level of reliability, efficiency, and modularity that makes a real difference. And with Sistemiza, that product comes backed by a complete solution—designed for your process, your plant, and your goals.
