The unique geometry of the two components of a Sanitary Screw Pump creates separate sealed chambers. The medium is pushed evenly axially, resulting in low internal velocity, constant volume, and stable pressure, thus eliminating eddy currents and agitation. Each pump stage has an output pressure of 0.6 MPa, a head of 60 m (for clean water), and a typical self-priming height of 6 m. It is suitable for conveying media temperatures below 80°C (up to 150°C for special requirements).
Sanitary Screw Pump
I. Features of Food Sanitary Screw Pumps:
Because the stator is constructed from a variety of elastic materials, this pump is exceptionally capable of conveying high-viscosity fluids, media containing hard, suspended particles, or fibers, which are beyond the capabilities of conventional pumps. Its flow rate is proportional to the speed. Drive can be direct via a coupling or variable speed via a variable-speed motor, V-belt, or gearbox. This pump has few parts, a compact design, and is easy to maintain. The rotor and stator are the only wearing parts, and the simple structure facilitates assembly and disassembly.
II. Applications of Sanitary Stainless Steel Screw Pumps:
They are widely used in industries such as food, metallurgy, papermaking, printing and dyeing, chemicals, fertilizers, and pharmaceuticals. Drive can be direct via a coupling or variable speed using a high-speed motor, V-belt, or gearbox.
III. About Sanitary Screw Pump Selection
Correct selection is key to achieving optimal performance. To meet the operating requirements of different media with varying physical and chemical properties, we recommend that the user submit pump operating data, and our professionals will recommend a model, which will be confirmed by the user.
Key operating data required for selection include:
Media type, corrosiveness, abrasiveness, viscosity, solids content, and operating temperature;
Operating parameters: flow rate or flow range, maximum pressure, and continuous or intermittent operation;
Installation environment: horizontal or vertical, fixed or mobile, special requirements for connecting pipelines, and explosion-proof protection requirements.
The Sanitary Screw Pump – Stainless Steel Sanitary Screw Pump is a high-performance, hygienic pump specifically engineered for food, beverage, pharmaceutical, cosmetic, and chemical industries. Constructed from 316L stainless steel, this pump meets stringent food-grade and sanitary standards, ensuring safe handling of viscous, shear-sensitive, and delicate fluids.
With a single-screw or twin-screw configuration, it delivers gentle, continuous, and pulsation-free flow, preserving the texture, viscosity, and integrity of products such as chocolate, syrup, honey, dairy creams, lotions, and pharmaceutical solutions. Its seal-less or mechanical seal design reduces leakage risk, downtime, and contamination, providing a reliable and durable solution for hygienic fluid transfer.
The compact, modular design allows easy integration into processing lines, dosing systems, and filling machines, while its CIP/SIP cleaning compatibility ensures compliance with hygiene regulations. The pump is suitable for continuous operation in demanding environments where precision and sanitation are critical.
The Stainless Steel Sanitary Screw Pump is designed to handle highly viscous and shear-sensitive fluids while maintaining hygiene and reliability. Its key specifications include:
| Parameter | Specification |
Pump Type | Single-screw / Twin-screw |
Material | 316L Stainless Steel |
Flow Rate | 0.1 – 50 m3/h |
Maximum Pressure | ≤ 1.2 MPa (12 bar) |
Maximum Temperature | 0 – 120°C |
Viscosity Range | ≤ 100,000 cP |
Inlet/Outlet | Sanitary tri-clamp, flange, or custom connections |
Seal Type | Seal-less or mechanical seal optional |
Drive Options | Electric, variable frequency (VFD), pneumatic |
Surface Finish | Ra ≤ 0.8 μm (hygienic standard) |
Cleaning | CIP/SIP compatible |
Flow Direction | Bi-directional capability |
The pump is capable of handling both thin liquids and highly viscous pastes, providing smooth, uniform, and hygienic transfer. Its rotor-stator design minimizes pulsation and shear, protecting sensitive products from damage during pumping.
The Stainless Steel Sanitary Screw Pump is widely used in industries where hygiene, precision, and reliable viscous fluid handling are required.
Chocolate, syrup, honey, jams, sauces: Gentle pumping preserves flavor and texture.
Dairy products: Efficiently transfers milk, yogurt, cream, and sauces without degradation.
Juices and beverages: Prevents foaming and preserves product integrity.
Injectable solutions, suspensions, and vaccines: Maintains sterility and dosing accuracy.
Creams, gels, and ointments: Gentle handling preserves active ingredients.
Biologics: Ensures hygienic transfer without contamination.
Lotions, creams, gels, and oils: Uniform flow maintains product consistency.
Shampoos and conditioners: Prevents foam formation and maintains viscosity.
High-viscosity personal care products: Smooth, hygienic transfer.
Resins, adhesives, and polymers: Handles high-viscosity fluids safely.
Acidic and alkaline solutions: 316L stainless steel resists corrosion.
Shear-sensitive chemicals: Maintains fluid integrity during pumping.
Laboratory and pilot plants: Precise dosing and hygienic fluid transfer.
Automated filling lines: Supports hygienic, accurate, and continuous operation.
To ensure maximum performance and durability, follow these operational guidelines:
Mounting: Install the pump horizontally or vertically according to pipeline requirements.
Connections: Use sanitary tri-clamp or flange connections, tightened securely to prevent leaks.
Drive Alignment: Connect the motor or drive system using flexible couplings to avoid misalignment.
Priming: Pre-fill the pump cavity for viscous materials or start at low speed to prevent dry running.
Start-Up: Begin at low speed to gently prime the pump.
Flow Control: Adjust speed via VFD or motor controller to achieve desired flow rates.
Monitoring: Regularly check for vibration, noise, or temperature increases.
Cleaning: Conduct CIP/SIP cleaning cycles after each batch to maintain hygiene.
Inspection: Examine seals, bearings, and rotors for wear.
Lubrication: Ensure proper lubrication of drive components.
Replacement Parts: Use OEM-certified parts for consistent performance.
Preventive Maintenance: Schedule inspections to reduce downtime and extend service life.
It is suitable for viscous, shear-sensitive, and delicate fluids, including syrups, honey, chocolate, dairy products, creams, lotions, and chemical solutions.
Yes, the pump can handle fluids up to 120°C. Optional upgrades allow higher temperature operation.
The pump handles mildly abrasive fluids, but highly abrasive materials require abrasion-resistant rotors or stators.
Supports CIP (Clean-In-Place) and SIP (Sterilize-In-Place) processes using compatible cleaning agents.
Yes, many models support bi-directional flow, allowing flexible installation.
Options include electric motors, VFD-controlled motors, and pneumatic drives.
Maintain proper NPSH, avoid dry running, and operate within recommended flow ranges.
Yes, the gentle screw design minimizes shear, maintaining product integrity.
The Sanitary Screw Pump – Stainless Steel Sanitary Screw Pump provides a high-performance, hygienic, and reliable solution for viscous, shear-sensitive, and delicate fluids. Its 316L stainless steel construction ensures corrosion resistance, hygiene compliance, and long-lasting durability.
Ideal for food, pharmaceutical, cosmetic, and chemical applications, the pump delivers precision, safety, and efficiency while maintaining product quality. Its modular design, CIP/SIP cleaning capability, and gentle pumping action make it a trusted choice for engineers, production managers, and quality assurance teams seeking consistent performance in hygienic fluid transfer.
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