Screw Pump – Positive Displacement Pump (Diamond Series)

A positive displacement screw pump with a variable displacement point, designed for demanding industrial applications in the food, chemical, cosmetics, and pharmaceutical industries. The pump ensures precise, safe, and efficient transfer of various media, including challenging and complex fluids.

Operating Principle

The pump operates based on a precision-machined screw (rotor) rotating inside an elastic stator. This movement creates sealed cavities that transport the medium along the pump axis. This design ensures a smooth, continuous flow and stable operating parameters.

Materials

• Rotor: High-quality, precision-machined steel
• Stator: Elastomer with high chemical and mechanical resistance

Flow and Performance Characteristics

• transfer of high-viscosity and high-density liquids
• capability to pump media containing solid particles
• excellent self-priming properties
• gentle product handling without damaging the medium structure
• high abrasion resistance
• constant flow proportional to rotational speed
• precise dosing capability
• high discharge pressure

Key Features of Diamond Pumps

• modular design – one housing for multiple models, reducing spare parts inventory
• modern, compact joints and protective covers
• modular sealing system – easy maintenance and quick replacement
• wide pump housing – allows passage of larger solid particles and improves suction performance (NPSHr)

Applications

The Diamond screw pump is an ideal solution for processes requiring:

• accurate dosing,
• gentle and controlled media transfer,
• high reliability and efficiency.

It is widely used in the food, chemical, cosmetics, and pharmaceutical industries.

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