Ross Introduces 250-Gallon Retention Mixers for High-Pressure Processing

Charles Ross & Son Company, a Hauppauge, New York-based manufacturer of industrial mixing equipment, has released a 250-gallon retention mixer built for high-pressure processing applications, according to a company announcement.¹ The Ross Retention Mixer is designed to maintain product uniformity, prevent settling, maximize reaction yield, and provide continuous agitation through storage and unloading, the company explains. The mixers described in the July announcement have a 250-gallon full holding capacity and are rated for operation up to 200 psi at 300°F.

What Are the Mixer’s Construction and Mixing Specifications?

Construction details reflect the demands of pressure service. The retention mixer is fabricated from Type 304L stainless steel and is designed, built, and ASME stamped to Section VIII, Division 1 for pressure service, with each vessel hydrotested prior to shipment. Mixing is provided by fifteen agitator blades driven to 350 rpm by a 15 HP TEFC inverter-duty motor, and fourteen baffles are included to enhance product movement throughout the vessel. An angular contact steady bearing supports the 17-4 PH shaft, which is sealed with a dry-running single mechanical seal. According to the release, the vessel can be customized with nozzles for material additions, ventilation, drainage, and instrumentation, and the retention mixer line is available in capacities up to 5,000 gallons.

What Is Charles Ross & Son Company’s Background?

Charles Ross & Son Company, which markets its equipment under the Ross brand, has manufactured mixing, blending, drying, and dispersion equipment since 1842.² The company's mixers are used in the manufacture of commodities including food, cosmetics, personal care products, specialty chemicals, pharmaceuticals, dental materials, medical components, animal health products, and other products. As an original equipment manufacturer, Ross provides both standard and custom-designed mixers, supported by a team of engineers, regional sales managers, field representatives, and inside sales specialists.

Equipment is designed and manufactured in company-owned plants in the United States, China, and India, with 5 U.S. manufacturing facilities and an 8,000-square-foot Test & Development Center.

What Ross Equipment Has Also Been Featured?

Past items covered by Nutritional Outlook have included an update to the company's triple-shaft mixer line, the 600-gallon Ross VersaMix Model VM-600, which the company said could achieve high-speed subsurface powder induction through a proprietary Solids/Liquid Injection Manifold (SLIM) that incorporates powder or liquid phases directly into the rotor-stator mix head as it rotates at 3,600 rpm.³

Other equipment includes the Model VMC VersaMix, a triple-shaft mixer/reactor designed for temperature-critical formulations of medium to high viscosity, rated for operation from 29.5 inches Hg vacuum to 8 psig internal pressure at temperatures up to 350°F.⁴

References

1. ROSS 250-Gallon Retention Mixers Designed for High-Pressure Processing. July 30, 2026. Accessed July 31, 2026. https://www.mixers.com/company/news/ross-250-gallon-retention-mixers-designed-for-high-pressure-processing/
2. About ROSS. Charles Ross & Son Company website. https://www.mixers.com/company/. Accessed July 31, 2026.
3. Grebow J. Ross updates triple-shaft mixer design to further streamline powder processing. Nutritional Outlook. December 20, 2019. Accessed July 31, 2026. https://www.nutritionaloutlook.com/view/ross-updates-triple-shaft-mixer-design-further-streamline-powder-processing.
4. Grebow J. Ross introduces more versatile mixer/reactors. Nutritional Outlook. March 7, 2019. Accessed July 31, 2026. https://www.nutritionaloutlook.com/view/ross-introduces-more-versatile-mixer-reactors.