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Sanitary Single Screw Pump

Hygienic Progressive Cavity Pump for Viscous Media

Sanitary Single Screw Pump
Positive Displacement Pumps

Sanitary Single Screw Pump

Hygienic Progressive Cavity Pump for Viscous Media

The Sanitary Single Screw Pump is a hygienic progressive cavity pump designed for gentle, pulsation-free transfer of viscous, shear-sensitive, and solid-laden media in food, beverage, pharmaceutical, and cosmetic industries. SS304/SS316L construction with food-grade stators, CIP/SIP compatible, flow 0.8-150 m³/h, pressure up to 1.2 MPa.

Category: Positive Displacement Pumps

Product Specifications

Flow Rate0.8 - 150 m³/h
Max Pressure1.2 MPa (120 m)
Power1.5 - 30 kW
Speed100 - 1000 rpm
Casing MaterialSS304 / SS316L
Rotor MaterialSS304 / SS316L
Stator MaterialFood Grade NBR / Silicone / EPDM
Max Temperature120 °C
Viscosity Range1 - 1,000,000 cP
Max Particle SizeUp to 30 mm
Seal TypeMechanical Seal / Packing Seal
ConnectionTri-Clamp / DIN / SMS
Standard3-A / FDA / EHEDG / ISO

Product Description

The Sanitary Single Screw Pump is a hygienic positive displacement pump designed for gentle, pulsation-free transfer of viscous, shear-sensitive, and solid-laden media in food, beverage, pharmaceutical, and cosmetic industries. Its progressive cavity design ensures constant flow regardless of pressure changes, making it ideal for precise dosing and metering applications.

Constructed in SS304 or SS316L stainless steel with polished internal surfaces and food-grade elastomer stators, this pump meets stringent hygienic requirements. It supports Clean-in-Place (CIP) and Sterilization-in-Place (SIP) procedures, minimizing downtime and ensuring product safety.

Applications

  • Food & Beverage: sauces, syrups, juices, fruit pulp, jams, honey, chocolate, cream
  • Dairy: milk, yogurt, butter, cheese curd, condensed milk
  • Pharmaceutical: syrups, suspensions, ointments, gels, liquid medicines
  • Cosmetics: creams, lotions, shampoos, toothpaste
  • Brewery & Distillery: wort, yeast, mash, beer concentrates
  • Chemical: adhesives, polymers, detergents

Quality Assurance

All Sanitary Single Screw Pumps are manufactured under ISO 9001 quality management system. Each pump undergoes rigorous testing including hydrostatic pressure test, performance test, surface finish verification, and material certification before shipment. We provide comprehensive documentation including test reports, material certificates (3.1), and operation manuals.

Why Choose Our Positive Displacement Pumps

Gentle, Pulsation-Free Transfer

Progressive cavity design delivers smooth, constant flow with minimal shear, protecting delicate products like yogurt, cream, and pharmaceutical suspensions.

Hygienic Construction

SS316L stainless steel wetted parts with polished surfaces and food-grade elastomers meet 3-A, FDA, and EHEDG hygienic standards.

High Viscosity Capability

Handles viscosities from 1 to over 1,000,000 cP, from thin juices to thick pastes and creams, with consistent performance.

CIP/SIP Compatible

Supports Clean-in-Place and Sterilization-in-Place procedures, reducing downtime and ensuring product safety in hygienic processing environments.

Key Features

Pulsation-free, constant flow regardless of pressure
Gentle handling for shear-sensitive products
Handles viscosities up to 1,000,000 cP
SS304/SS316L stainless steel hygienic construction
Food-grade NBR/silicone/EPDM stator options
CIP and SIP compatible design
Tri-Clamp, DIN, or SMS connections
3-A, FDA, EHEDG certified designs available
Self-priming capability up to 8 m
Handles soft solids up to 30 mm

Frequently Asked Questions

What is a sanitary single screw pump?

A sanitary single screw pump (progressive cavity pump) is a hygienic positive displacement pump that uses a single helical rotor rotating inside a double-helix elastomer stator to move fluid. It provides smooth, pulsation-free flow ideal for viscous and shear-sensitive media in food, pharmaceutical, and cosmetic industries.

What materials are used in sanitary single screw pumps?

Wetted parts are typically SS304 or SS316L stainless steel with polished internal surfaces (Ra ≤ 0.8 μm). The stator is made from food-grade elastomers such as NBR, silicone, or EPDM, selected based on the fluid being pumped and operating temperature.

Can sanitary single screw pumps handle solids?

Yes, single screw pumps can handle fluids containing soft solids up to approximately 30 mm in diameter, depending on pump size. They are commonly used for fruit pulp, vegetable pieces, and food products with particulates.

Are these pumps CIP/SIP compatible?

Yes, sanitary single screw pumps are designed for Clean-in-Place (CIP) and Sterilization-in-Place (SIP) procedures. However, during CIP, the pump should be operated at reduced speed to prevent excessive wear on the stator.

What is the maximum viscosity this pump can handle?

Sanitary single screw pumps can handle viscosities up to 1,000,000 cP or higher, making them suitable for very thick products like chocolate, peanut butter, and heavy creams.

Selection Guide

✅ When to Choose This Pump

  • High viscosity fluids (above 500 cP)
  • Hygienic food and beverage products
  • Precision metering and dosing
  • Shear-sensitive products

⚠️ When NOT to Choose

  • Large volume low-viscosity transfer
  • Abrasive slurries with large particles
  • High-pressure water injection
  • Applications requiring variable flow at constant speed

💡 Common Selection Mistakes

  • Not installing pressure relief valve
  • Running at too high speed for viscosity
  • Ignoring shear sensitivity of product
  • Not considering pulsation dampening

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