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bio-m® BSA & TSA Agitator
with mechanical seal.


While magnetic technology represents the future of sterile mixing, specific process requirements or legacy specifications often demand the robustness of a mechanically sealed system. The bio-m® BSA (Bottom Mounted) and TSA (Top Mounted) series represent Liquitec’s engineering refinement of this classic technology.

Designed for the pharmaceutical, biotech, and food industries, these agitators utilize high-precision mechanical seals and hollow-shaft drive technology to ensure smooth operation and sterility. Whether for cell culture fermentation or complex chemical applications, the BSA and TSA lines offer a reliable, validatable solution when a physical shaft entry is required.

We have optimized the "traditional" agitator to meet "modern" Swiss quality standards: ensuring dead-leg-free vessel connections and maximum serviceability.

Advantages

 Hygienic Design integrity

 Both BSA and TSA models are designed with dead-leg-free insertion flanges to ensure complete drainability and cleanability (CIP/SIP).

 Simplified Maintenance (BSA)

 The bottom-mounted BSA features an optional lowering device, allowing maintenance personnel to replace the mechanical seal without removing the heavy drive unit—a significant reduction in downtime and labor costs.

Compact & Stable

The use of hollow-shaft gear motors with integrated bearings ensures a low-profile design and smooth, quiet running of the agitator shaft.

Retrofit Ready (TSA)

The top-mounted TSA can be configured with standard DIN 28141 flanges, making it an ideal "drop-in" high-quality replacement for existing competitor units on legacy vessels

Documentation & Compliance

Full material traceability (1.4435/AISI 316L) and FDA/USP Class VI compliance for all elastomers.

Mounting Positions 
01
BSA
 Bottom-mounted for bioreactors and easy access
02
TSA
Top-mounted for standard process vessels.


  • Shaft Diameters

  • Standardized options ranging from 10mm to 100mm depending on the model.
       Mechanical Seals

liquitec's bio-m® LS - Lip Seal. Ther versatile solution forhygienic, simple to use and low maintenace solution. The perfect seal to cover the majority of todays seal task in pharmaceutical and food applications.

Standardized options from all global leading suppliers are integraded seamless in our BSA/TSA agitators.


  • Drive Units

  • Pneumatic Drives
    Available for environments where compressed air is the preferred power source or for specific explosion-proof requirements.
  • DC Motors
    High-efficiency direct current options for specific pilot or portable skid applications.
  • Wash down Motors
    Stainless steel encapsulated motors for clean rooms and ultra pure areas
  • Servo Drives
    Closed-loop drive for highes accuracy and flexibility
              Surface Finish​
In a Process Vessel, the surface is part of the sterile barrier. We standardize on excellence. Our default offering for wetted parts is a surface roughness of Ra < 0.4 µm, finished with Electropolishing (E2). This ultra-smooth profile minimizes biofilm adhesion and maximizes corrosion resistance, ensuring your CIP & SIP cycles are effective every time.


  •  
    • Impellers


  • Compatible with the full bio-m® impeller range such as Rushton Turbine, Marine propeller, Elephant Ear Segment Impeller, A315 Impeller etc..

How to Order

bio-m® BSA & TSA Agitator with
mechanical seal

bio-m® BSA & TSA Agitator with mechanical seal. can be selected based on your application, vessel volume, viscosity, mixing task, surface and material. A custom made piece of equipment to perfectly fit your process.

Request more information

Contact liquitec
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