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LPD & LLPD Motionless Mixer

How it Works

Benefits of Choosing a ROSS LPD & LLPD Static Mixers  

What does ROSS LPD & LLPD Static Mixers do?

The LPD and LLPD (Low Pressure Drop) ROSS models consist of a series of semielliptical plates which are discriminately positioned in a tubular housing, up to 40" in diameter or larger. A single LPD element consists of two plates perpendicular (or 120° for the LLPD) to each other and the mixing operation is based on splitting and diverting input streams. Both designs are most often used for turbulent product flow patterns.

How do ROSS LPD & LLPD Static Mixers work?

The ISG consists of individual mixing elements that are stacked in a tubular housing. As the product moves through each LPD element, flow is continuously split into layers and rotated 90 degrees in alternating clockwise and counterclockwise directions. This method of subdividing the flow and generating striations results in a highly predictable and repeatable mixing strategy commonly employed for high flowrate, low viscosity applications. During turbulent flow, the mixer elements enhance the random motion of molecules and formation of eddies. Four or six elements are usually sufficient for most low viscosity applications.


Technical Data

Ross LPD/LLPD (low pressure drop) and ISG (interfacial surface generator) Motionless Mixers are well known for their wide ranging uses in turbulent and laminar flow mixing applications. Each design can be supplied as complete plug-in modules or as individual elements for installation into your preferred housing design.

Static Mixer Brochure

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    • Additional Resources

      • Improve your extrusion process with a static mixer

        Interfacial Surface Generator (ISG) Static Mixers are particularly ideal for use in injection molding and extrusion applications. Benefits include uniform temperature and viscosity, accurate composition and highly repeatable quality of the finished product.

      • Recommended Mixing Equipment for Biodiesel

        In a chemical process called transesterification, the triglycerides in oil or fat are reacted with an alcohol in the presence of a catalyst, usually a strong alkaline. This reaction yields alkyl esters (biodiesel) and glycerin. Proper mixing is required to maximize yield and reduce impurities.

      • Recommended Mixing Equipment for Water and Wastewater Treatment

        Static Mixers allow for continuous dosing and blending of treatment chemicals into water and wastewater. Flocculants, disinfectants, neutralizing agents, pH conditioners and other chemicals are conveniently added into a flowing water stream and completely mixed within a relatively short length of pipe. Used in conjunction with automated instrumentation, Ross Low Pressure Drop Static Mixers deliver predictable quality control based on a virtually maintenance-free operation.

      • Continuous static mixing of multiple process streams

        In many processes, mixing in pipelines is simpler and more economical than in vessels. In particular, continuous large-scale mixing of multiple liquid streams is easily accomplished in a static mixer arrangement. Advantages include fast blending, low maintenance, easy installation, and low energy requirement.

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