The Duravant family of operating companies serve the food processing, packaging and material handling segments.

Vacuum Stuffing, Pumping & PortioningComparison Table


Marlen OPTI series vacuum stuffing and pumping machines feature twin piston pumping systems with a variety of hopper options designed to match product requirements. This series is available in multiple capacities ranging from 10,000 to 34,000 lbs. per hour production rates. Additionally, we offer a complete line of portioning equipment to satisfy almost any scenario. Exact weight, volumetric, dynamic and transducer portioners are available options designed to fit your application.
  • OptiServ 340 Vacuum Stuffer & Pump

    With the pumping process powered entirely by servo motor technology, Marlen's OptiServ series pumps deliver exemplary high quality output while dramatically reducing the complexity and cost of operating at peak performance levels. With...
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  • Opti 100 Vacuum Stuffer & Pump

    Features a twin-piston vacuum stuffing and pumping system with a variety of hopper options designed to match product requirements. Maximum capacity 10,000 lbs per hour, 250 psi pumping pressure. Ideal for smaller application...
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  • Opti 120 HP Vacuum Stuffer & Pump

    Features a twin-piston vacuum stuffing and pumping system with a variety of hopper options designed to match product requirements. Available in three models with maximum capacity of 20,000 lbs per hour, 500 psi...
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  • Opti 200 Outboard Vacuum Stuffer & Pump

    Features a twin-piston vacuum stuffing and pumping system with a variety of hopper options designed to match product requirements. Maximum capacity 20,000 lbs per hour, 250 psi pumping pressure. Ideal for applications requiring...
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  • Opti 200 Inboard Vacuum Stuffer & Pump

    Features a twin-piston vacuum stuffing and pumping system with a variety of hopper options designed to match product requirements. Maximum capacity 20,000 lbs per hour, 250 psi pumping pressure. Ideal for applications requiring...
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  • Opti 280 Vacuum Stuffer & Pump

    Features a twin-piston vacuum stuffing and pumping system with a variety of hopper options designed to match product requirements. Maximum capacity 28,000 lbs per hour, 500 psi pumping pressure. Ideal for all applications....
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  • Opti 340 Vacuum Stuffer & Pump

    Features a twin-piston vacuum stuffing and pumping system with a variety of hopper options designed to match product requirements. Maximum capacity 34,000 lbs per hour, 250 psi pumping pressure. Ideal for higher volume...
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  • Opti-Xtrude Extruder

    Marlen’s Opti-Xtrude Extruder is designed for the extrusion of viscous, shear-sensitive corn masa or potato starch. Our Opti-Xtrude model, with its zero-slip, low-shear operation is capable of extruding a variety of products with...
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  • Opti Enclosed Pipeline X-ray Meat Inspection System

    Is purge runoff from your meat x-ray system draining your yields? Our enclosed pipeline x-ray inspection system increased yields by 1.5 to 3%. An OPTI pump from Marlen pulls the strongest vacuum on...
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  • COV Volumetric Portioner

    The COV Volumetric Portioner is designed to volumetrically measure and portion whole muscle products with weight accuracy of ±0.5%. Available in 5, 10, 20, 40, and 60-lb. sizes. Ideal for any product which...
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  • RS Volumetric Portioner

    The RS Volumetric Portioner is custom designed to volumetrically measure and deliver specific portions into rollstock packaging machines. It measures, then rotates to deliver into the package. Ideal for any product that needs...
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  • Transfer Valve Dynamic Portioner

    The Transfer Valve assembly is designed to use the dynamic portioning within the Opti Transducer Portioning System (TPS), capable of delivery whole muscle portion with minimal damage and accuracy of ±2% average deviation.
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Benefits of Vacuum Stuffing, Pumping & Portioning

Our twin-piston design allows for the gentlest handing to maintain product integrity while achieving high volume output.

  • Superior particle definition and product integrity. 

Our Opti stuffing and pumping system allows product to be diffused across the pump’s sheeting valve for the gentlest handling while maximizing vacuumization. This highly engineered design delivers premium whole muscle meats with the least amount of product damage.

  • Optimal vacuumization. 

Marlen’s patented twin-piston and sleeve design allow for maximum vacuumization throughout the system’s hopper and pumping chamber. By exposing the product to optimal removal of entrapped air and achieving up to 29” of mercury, better weight control is achieved, shelf life extended, and increased casing savings result through the delivery of denser products.

  • Continuous flow. 

Constant pressure and speed is maintained via Marlen’s hydraulic-powered and servo-driven pumps which retain the same pressure while stopped as when in motion. The result: a precise metered flow for better weight control at the speeds required for high volume production environments.

A picture of Marlen's production facility in Riverside

Opti series vacuum stuffing and pumping systems are ideally suite for whole muscle, sectioned, formed and emulsified meat and poultry products along with products such as sliced peaches, diced tomatoes and lobster filled ravioli. 

Industries and applications in Marlen vacuum stuffing, pumping and portioning solutions are typically used include:

Marlen’s Opti series vacuum stuffers and pumps can be equipped with a variety of hopper options designed to match application and product requirements. Please view each of our available products for full details. For additional information, Contact Us Today.