How Twin Screw Pumps Handle Both Product and CIP Operations

The Alfa Laval OS Twin Screw Pump represents a significant advancement in hygienic processing technology by combining capabilities that traditionally required separate pumps. This twin screw pump is engineered to handle both viscous product transfer and Cleaning-in-Place operations within the same unit, simplifying system design and reducing equipment costs. The two-in-one operation provides easy handling of process media with varying viscosities as well as CIP fluids, which simplifies piping and pump control systems.

Advanced Gearbox Design for Maximum Reliability

What sets the OS Twin Screw apart is its innovative gearbox construction. Unlike conventional designs, the timing gears are strategically located between bearing sets rather than external to them. This optimal bearing placement provides maximum support to the shaft assembly, creating a robust, rigid design that withstands demanding operating conditions. The internal gearcase features an oil sump design that optimizes oil circulation to both bearing sets and the timing gears, improving lubrication and reducing heat generation through decreased friction—ultimately extending service life and increasing process uptime.

Hygienic Construction for Food and Beverage Applications

Every component that contacts the product is manufactured from high-quality W. 1.4404 (AISI 316L) stainless steel, with the pump casing further enhanced through diffusion hardening for increased durability. The stainless steel gearbox, end cover, and foot ensure extended life and facilitate thorough washdown procedures essential in hygienic environments. With mechanical surface finish Ra ≤ 0.8 (≤ 32), the pump meets strict hygiene standards required in dairy processing, food manufacturing, and beverage production.

Front-Loading Seal Design for Easy Maintenance

Maintenance has been simplified through the front-loading, self-setting cartridge design that makes replacing the shaft seal straightforward while the pump remains in place. This design feature significantly reduces downtime during maintenance procedures. The OS Twin Screw supports multiple seal configurations including single, single flush, and double mechanical cartridge seals, all of which are fully front-loading and interchangeable to accommodate different processing requirements or operating conditions.

Connections for Different Piping Standards

The Alfa Laval OS Twin Screw pump offers exceptional flexibility with connections available in multiple hygienic standards to match existing processing systems. Available connection types include Tri-Clamp, DIN 11851, SMS, DIN 11864-1-A-A, and additional options for larger models. This compatibility with various piping standards ensures seamless integration into both new installations and retrofit projects across different regions with varying industry standards. The connection sizes range from 40mm (1½") for smaller models up to 100mm (4") for larger capacity units, accommodating a wide range of flow requirements.