Screw Pump
Positive Displacement Pump for Viscous Media
The Screw Pump is a positive displacement pump designed for handling viscous, shear-sensitive, and solid-laden media in chemical, food, and pharmaceutical industries. It provides constant flow regardless of pressure.
Product Specifications
| Flow Rate | 0.5 - 500 m³/h |
|---|---|
| Pressure | 0.6 - 4.0 MPa |
| Power | 0.75 - 75 kW |
| Speed | 100 - 1500 rpm |
| Casing Material | Cast Iron / Stainless Steel |
| Rotor Material | Stainless Steel / Alloy Steel |
| Stator Material | NBR / EPDM / FKM |
| Max Temperature | 120 °C |
| Viscosity Range | 1 - 100000 cSt |
| Seal Type | Mechanical Seal |
| Standard | Industrial Standard |
Product Description
The Screw Pump is a positive displacement pump using one or more rotating screws to move fluid with smooth, pulsation-free delivery. Its intermesing screw design handles viscosities from 1 to over 1,000,000 cP, making it ideal for heavy oils, adhesives, polymers, and food pastes. The pump delivers constant flow regardless of pressure changes, with flow rates from 0.5 to 500 m³/h and pressures to 4.0 MPa. Available in cast iron or stainless steel with various rotor/stator material combinations for different fluid services.
Applications
- Crude oil transfer
- Heavy fuel oil
- Chemical sludge
- Food paste and cream
- Pharmaceutical suspensions
- Adhesive and resin
Quality Assurance
All Screw Pumps are manufactured under ISO 9001 quality management system. Each pump undergoes rigorous testing including hydrostatic pressure test, performance test, NDT inspection, and dynamic balance verification before shipment. We provide comprehensive documentation including test reports, material certificates, and operation manuals.
Why Choose Our Positive Displacement Pumps
Positive Displacement Screw Design
Triple screw positive displacement pump for high-viscosity fluid transfer, with constant flow regardless of pressure changes for precise dosing.
High Viscosity Capability
Handles viscous fluids up to 100,000+ cP including heavy oils, bitumen, polymers, and adhesives, with optional heating jacket for high-viscosity service.
Low Pulsation Flow
Continuous screw action produces near-pulsation-free flow, ideal for filtration systems, coating processes, and instrumentation feed lines.
Quiet Operation
Internal meshing screws operate with minimal noise and vibration, suitable for indoor installation and noise-sensitive environments.
Key Features
Frequently Asked Questions
What is a screw pump?
What is the difference between single, twin, and triple screw pumps?
What viscosity range can screw pumps handle?
Can screw pumps run dry?
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
Still unsure? Use our Pump Selection Center → or talk to our engineers →
Interested in this product?
Contact our sales team for pricing, lead time, and technical support.
Send Inquiry Now
