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Hygienic Pumps for Liquid Transfer | Twins Screw pump

Twin Screw screw pumps are built for process flexibility and hygienic liquid transfer in food and beverage production. As food-grade pumps, they are designed for safe handling of edible liquids and for reliable performance under strict sanitary requirements.
Unlike standard pumps, Twin Screw pumps use sanitary, cleanable construction to support thorough cleaning and consistent operation. They can transfer textured, viscous, and shear-sensitive products while also handling media that may include suspended solids — helping reduce product damage and maintain stable dosing.
In addition, these Twin Screw screw pumps are engineered to support both product transfer and Cleaning-in-Place (CIP) in the same system. Low-pulsation operation protects sensitive formulations, while robust solids-handling capability improves process consistency. With simplified maintenance and fewer interruptions, the result is improved uptime and more dependable production runs.

A food-grade pump is a hygienic pump engineered to transfer edible liquids safely, consistently, and with minimal contamination risk in food and beverage production. These pumps are built with sanitary design principles — such as cleanable, media-contact surfaces and hygienic construction — so they can be thoroughly cleaned between batches.
In practice, food-grade pumps are commonly used for applications like dairy processing, beverage handling, and personal care formulations where reliable performance and repeatable sanitation are essential.

When you choose Food Grade and hygienic pumps, you typically get materials and construction intended for contact with food products, along with features that make cleaning-in-place (CIP) easier and more reliable. This is why food-grade pumps are commonly specified for applications where product quality, hygiene compliance, and repeatable performance are critical.

Key Specifications

Operating Pressure (bar)

0 - 16

bar

Flow Capacity (m³/h)

6.1 - 134.3

m³/h

 

Applicable in wide range

Choosing the right hygienic pump starts with understanding your product’s viscosity, texture, and shear sensitivity. Different pump types perform best under different process conditions, so the “best” choice depends on how your liquid behaves in the line.
For thin, free-flowing liquids, many facilities start with **centrifugal pumps** because they can deliver efficient flow with straightforward operation. If your product is very delicate and you need extremely gentle handling, some applications are matched with **peristaltic pumps**, which can help minimize shear and protect sensitive formulations.
However, when products become thicker, are textured (e.g., sauces, creams, dressings), or contain **suspended solids** and/or abrasive characteristics, **screw pumps** — especially **twin screw pumps** — are often the preferred solution. Their positive displacement design supports stable, low-pulsation flow, helping maintain consistent dosing while reducing product damage. In addition, the screw geometry and hygienic construction support reliable transfer of viscous media and solids-containing products, making them a strong fit for demanding food and beverage processing environments.

Twin screw pumps are designed to handle a wide range of food and beverage media — from smooth, high-viscosity formulations to products with abrasive or shear-sensitive characteristics. Their positive displacement action supports stable flow and low pulsation, helping protect sensitive products and maintain consistent dosing. This makes them well-suited for applications such as dairy concentrates, sauces, dressings, creams, and other textured liquids where both hygiene and product integrity matter.

Twin screw pumps are designed for hygienic liquid transfer of sensitive, abrasive, and both high- and low-viscosity products. Because they are positive displacement screw pumps, they deliver a steady, virtually pulse-free flow that helps protect texture and reduce shear — so sauces, syrups, creams, and other textured formulations transfer smoothly and maintain consistent dosing.
When your product contains solids and particulates, the screw geometry and sanitary, cleanable construction support dependable solids-handling. The pump’s internal flow path is engineered to move viscous media and suspended particles without excessive disruption, helping lower the risk of product damage and improving process consistency. That’s why screw pumps are commonly selected for dairy concentrates, sauces, dressings, beverage formulations, and edible-adjacent personal care liquids where hygiene, product integrity, and repeatable performance matter.

To help you match the right hygienic pump to your line, here are common products and food categories that are typically suitable for food grade pumps — especially when you need reliable, sanitary liquid transfer with consistent flow.

  • Dairy
  • Beverages
  • Condiments & sauces
  • Dressings & emulsions
  • Bakery & dessert fillings
  • Personal care & adjacent food-grade liquids

Because twin screw pumps are designed for hygienic liquid transfer, they’re often selected for products that are textured, viscous, or contain suspended solids — where gentle, low-pulsation flow helps protect product quality.

Process and CIP all in 1

Two-in-one operation makes it easier to clean and sanitize food-grade pumps without interrupting production. With a twin screw pump, the same hygienic unit used for product transfer can also circulate CIP fluids for thorough, repeatable cleaning. Where your process requires it, the system can be configured for SIP as well, using heat sanitization to help achieve a higher level of microbial control.
Because the pump is designed for hygienic liquid transfer and cleanable, sanitary flow paths, CIP/SIP cycles can be run with consistent routing of both product and cleaning media. This reduces manual handling, simplifies piping and pump control, and helps lower contamination risk by keeping cleaning steps standardized between batches. The result is more reliable sanitation, fewer cleaning-related stoppages, and improved uptime across food and beverage production runs.

 

To keep food-grade liquid transfer safe and consistent, cleaning and sanitation must be planned as part of the process — not treated as an afterthought. With hygienic pumps like twin screw screw pumps, the goal is to remove product residues effectively, reduce contamination risk, and support repeatable results between batches.

1) Start with a clear cleaning plan (product-to-cleaning match)

Different products leave different residues. Before you run a CIP cycle, confirm the right cleaning approach based on what the pump handled — e.g., dairy concentrates, sauces, dressings, or beverage syrups. A good plan typically defines: - Pre-rinse steps to remove bulk product - The correct detergent/alkaline or acidic chemistry for the residue type - Required contact time and temperature targets - Final rinse quality to prevent chemical carryover

2) Use CIP/SIP routing designed for hygienic systems

Twin screw pumps are engineered for hygienic liquid transfer and can be integrated into CIP (and SIP where required). Because the pump is designed with cleanable, sanitary flow paths, CIP fluids can be circulated through the same hygienic unit used for production. This helps standardize cleaning steps and reduces the chance of missed areas.

3) Control key CIP parameters for reliable results

Even with the right equipment, cleaning performance depends on operating conditions. Pay attention to: - Flow rate and circulation coverage (to reach all wetted surfaces) - Temperature (to improve detergent action) - Turbulence/velocity where applicable (to lift residues) - Contact time (to ensure chemistry works as intended) - Drain and rinse effectiveness (to avoid buildup)

4) Verify sanitation with practical checks

After cleaning, verification helps confirm the process is working. Many facilities use routine checks such as: - Visual inspection of accessible components after disassembly (when required) - Conductivity/temperature monitoring during rinses - Microbiological testing schedules based on risk - Documentation of CIP cycle parameters for traceability

5) Maintain seals and wear parts to protect hygiene performance

Sanitation is only as reliable as the pump’s condition. Front-loading, cartridge-style seal designs and appropriate seal selection help support consistent performance during washdown and repeated CIP cycles. Following recommended maintenance intervals can reduce leakage risk and help keep hygienic operation stable over time.

When your cleaning and sanitation procedures are aligned with the pump’s hygienic design — especially for CIP/SIP — your production line benefits from more dependable hygiene control, fewer cleaning-related interruptions, and improved confidence in product quality.

Superior suction performance

with excellent lift capability and low NPSHr provides installation flexibility and increases product recovery.

Wide selection of models and options

The Twin Screw Pump is available in twelve models based on four frame sizes. Each frame size is available with three different screw profiles for varying pressure, flow and solids-handling capabilities.

Upgrade materials

Food-grade hygienic pumps are built with corrosion-resistant materials to support safe, reliable liquid transfer and consistent washdown performance. In this Twin Screw pump, all media-contact steel components — such as the pump casing, front cover, and feed screws — are made from W.1.4404 (AISI 316L). The pump casing is also diffusion hardened to improve wear resistance and help extend service life.
For durability in demanding food and beverage environments, the design includes a stainless steel gearbox, end cover, and foot. These materials help withstand routine cleaning and sanitation, supporting stable operation and easier maintenance over time.

Sealing made easy

The front-loading, self-setting cartridge design makes it easy to replace the shaft seal while the pump is in place. Single, single flush and double mechanical cartridge seals are available. All options are fully front-loading and interchangeable.

To choose the right hygienic pump for your food processing line, match the pump design to your product characteristics, operating conditions, and sanitation requirements. Start by evaluating viscosity, texture (smooth vs. textured), and whether your product contains suspended solids or abrasive particles — because these factors determine which pump type performs best.
For thin, free-flowing liquids, many facilities begin with **centrifugal pumps** for efficient transfer. If your formulation is extremely delicate and you need gentle handling, **peristaltic pumps** can help minimize shear. However, when products are thicker, shear-sensitive, textured (such as sauces, creams, and dressings), or solids-containing, **twin screw pumps** are often the preferred hygienic solution due to their stable, low-pulsation, positive-displacement flow.
Finally, confirm your cleaning strategy. If you require fast, repeatable sanitation, prioritize food-grade hygienic pumps designed for CIP (and SIP where applicable). A well-matched selection helps protect product quality, supports reliable cleaning, and reduces downtime across production runs.

  • 1) Identify your product characteristics
  • 2) Confirm your required flow and pressure
  • 3) Evaluate hygiene and cleaning needs
  • 4) Consider shear sensitivity and product integrity
  • 5) Choose the right sealing and materials
  • 6) Plan for installation and service

When these factors are aligned, you get a hygienic liquid transfer solution that performs consistently across production runs — while meeting the sanitary expectations of modern food processing.

Greater Flexibility

The Twinscrew pumps feature a modular design with 12 available models, helping you match the right pump to your application for reliable hygienic liquid transfer. This model range supports stable performance across different product viscosities and solids levels, while offering the right pressure capability for your process needs. With a cost-effective configuration for each duty, customers can improve durability, reduce lifecycle costs, and minimize downtime through simplified maintenance and service.

When you’re choosing between twin screw pumps and lobe pumps for food processing, the “best” option depends on how your product behaves and how strict your hygiene and flow requirements are.

Twin screw pumps are positive displacement screw pumps designed for stable, low-pulsation transfer — often making them a strong choice for textured, high-viscosity, or shear-sensitive foods (such as sauces, dressings, creams, and dairy concentrates). Their geometry supports consistent dosing and can help reduce product damage, while hygienic pump design supports reliable cleaning for food-grade pumps.

Lobe pumps can also be used in food applications, especially where gentle handling is needed. However, if your process demands very steady, virtually pulse-free flow for viscous or solids-containing formulations, twin screw pumps are frequently selected because they maintain consistent transfer characteristics across a wider range of product conditions.

In short: if your priority is hygienic, low-pulsation twin screw pumps performance for viscous, textured, or shear-sensitive products, they’re often the better fit. If you want, share your product viscosity, solids level, and required flow/pressure, and we can help you compare the right pumps for your line.

Sanitary Operation

The Twinscrew hygienic fluid transfer pumps are designed for food and beverage processing where sanitation and regulatory compliance matter. They feature hygienic, cleanable construction that supports thorough washdown and helps minimize contamination risk. The pumps are EHEDG accredited and conform to the 3-A Sanitary Standard, and they are suitable for both CIP and SIP — so you can clean and sanitize the same hygienic unit used for product transfer.
For additional assurance, these food-grade pumps are built around sanitary design principles such as hygienic media-contact surfaces and reliable sealing arrangements, helping support consistent, repeatable cleaning between batches.

CIP in place

Two-in-one operation provides easy handling of process media of varying viscosities as well as CIP fluids. This simplifies piping and pump control, cutting costs and minimizing contamination risks.

Multiple Seal Options

The optimum seal can be chosen to match your pumped media requirements and duty conditions. Single or double mechanical seals are available and include flushed or aseptic variants. For arduous conditions, hard faced seal materials can be used. Plus, packed glands offer a simple, low cost, and easy to maintain controlled leakage sealing arrangement.

Pump Performance, Durability, and Cost Considerations

Pump Performance

Selecting the right food grade pump starts with understanding the performance requirements of your process. Twin screw pumps are engineered to deliver stable, low-pulsation flow across a wide operating range, making them suitable for both low- and high-viscosity products.

Key performance advantages include:

  • Consistent flow rates for accurate filling, dosing, and transfer operations.
  • Gentle product handling that helps preserve texture, appearance, and product integrity.
  • Excellent suction capability with low NPSHr, improving product recovery and reducing waste.
  • Reliable handling of products containing suspended solids without compromising performance.
  • The ability to process both product and CIP fluids using the same pump, reducing equipment requirements.

Whether transferring dairy products, sauces, syrups, creams, beverages, or personal care liquids, twin screw pumps provide the flexibility needed to maintain efficient and repeatable production.

Durability and Long-Term Reliability

In food and beverage production environments, equipment reliability directly impacts productivity and operating costs. Twin screw pumps are designed for demanding continuous-duty applications and frequent washdown procedures.

Features that contribute to long service life include:

  • Product-contact components manufactured from corrosion-resistant AISI 316L stainless steel.
  • Diffusion-hardened pump casing and screw options for enhanced wear resistance.
  • Robust gearbox construction designed for reliable operation under varying process conditions.
  • Front-loading cartridge seal designs that simplify maintenance and reduce service times.
  • Hygienic construction that supports regular CIP and SIP cycles without compromising performance.

These design features help minimize unplanned downtime, extend component life, and maintain consistent product quality throughout the pump's operating life.

Cost Considerations and Total Cost of Ownership

While initial pump selection is important, long-term operating costs often have a greater impact on overall process economics. Evaluating total cost of ownership helps ensure the most cost-effective solution for your application.

Factors that influence operating costs include:

  • Energy consumption during continuous production and cleaning cycles.
  • Maintenance requirements and the ease of servicing wear components.
  • Downtime associated with cleaning, inspections, and seal replacement.
  • Product loss due to inefficient recovery or product damage.
  • The need for multiple pumps versus a single pump capable of handling both process and CIP duties.

Because twin screw pumps combine product transfer and CIP functionality in a single unit, many facilities can reduce equipment complexity, simplify piping systems, decrease maintenance requirements, and lower long-term operating costs. Their ability to handle a wide range of products also provides flexibility for future production changes, helping maximize return on investment.

When evaluating hygienic pumps, considering performance, durability, and lifecycle costs together can help identify the solution that delivers the best value for both current and future production requirements.

Options

  • Single mechanical shaft seal.
  • Double mechanical shaft seal.
  • Silicon Carbide/Carbon seal faces
  • Product wetted elastomers in FPM or FFPM.
  • Diffusion hardened screws.
  • Heating jacket.
  • Rectangular inlet.
  • Hydrostatic testing with certificate.

Flowrate: 6,1 to 134,3 m3/h up to

Pressure up to 16 bar

Portsize 1,5 to 6 inch

 

FAQ

A food pump is a hygienic pump designed to safely transfer food and beverage products through a production process. Food pumps are manufactured using sanitary materials and smooth surfaces that help reduce contamination risks while supporting efficient cleaning and reliable product handling.

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