60 to 250 L working volumeStandalone
In smaller vessels the LBS is the only agitator. It mixes the entire volume, from the full vessel down to the heel.
lean bottom system (LBS)
The lean bottom system (LBS) combines agitator, bottom outlet valve and up to two sensor ports in one prefabricated block that is set into the vessel bottom as a single unit. The deep-set impeller keeps the product in motion until the vessel is drained; the valve block has no dead legs and drains completely.
60–250 LWorking volume standalone
Zone 1/2ATEX system certification
1.4435BN2 (316L), product contact
Design
One block in the bottom. Instead of many nozzles.
Welding agitator, valve, drain and sensors individually into a dished bottom causes heat distortion, warping and rework on the polish. The LBS is supplied as a prefabricated multi-port flange: the vessel builder welds one flange instead of several, and the critical bottom geometry is finished in the factory.
- Agitator, bottom outlet valve and up to two sensor ports in one flange
- Substantially less welding on the vessel, lower risk of distortion
- Valve block without dead legs, fully drainable and cleanable
- Flush flow path, actively swept by the agitator
- Mixing down to the lowest level, no stratification during draining
Configurations
Standalone or paired. By vessel size.
Large process vesselsPaired
In large vessels the LBS works together with a main agitator. Its geometry is designed for the heel volume: once the main agitator has stopped, the LBS keeps the remaining product homogeneous.
Valve and actuator
Two valve variants. Actuator of your choice.
Both valve variants sit in the same dead-leg-free flange. The choice depends on the hygiene risk of the process.
For media and buffersStandard bottom diaphragm valve
The basic version for fully drainable harvesting. Suitable where the valve does not need to be sterilised separately between process steps.
For high-potency and sterile-critical applicationsValve cleaning system
An integrated rinsing port flushes cleaning agents (CIP) and steam (SIP) actively through the valve body. Residue in the valve is avoided, and the outlet is cleaned and sterilised along with the vessel.
Make according to site standardValve actuator
The operator selects the make of valve actuator so that it fits the existing automation. liquitec handles the mechanical integration and guarantees a dead-leg-free connection between actuator and valve block.
Explosion protection
One system. One ATEX certificate.
liquitec certifies the entire functional unit as one system under ATEX, for Zone 1 or Zone 2. Instead of collecting individual certificates for each component, the operator receives one dossier for the whole assembly.
- Covers LBS body, agitator, valve body and actuators
- Zone 1 or Zone 2
- One set of documentation for the whole assembly
Specification
Engineered to the vessel.
- Product contact
- 1.4435 BN2 (316L); special materials for corrosive media on request
- Agitator
bio-m® BMA- Standalone
- 60 to 250 L working volume
- Paired
- With main agitator in large process vessels
- Integrated
- Agitator, bottom outlet valve, up to two sensor ports
- Valve
- Standard bottom diaphragm valve or valve cleaning system with rinsing port (CIP/SIP)
- Valve actuator
- Make selected by the operator
- Explosion protection
- ATEX system certification, Zone 1 or Zone 2
- Engineering
- Optional CFD study: mixing times and shear rates for the medium and vessel geometry, before manufacturing
Contact
Enquiry
We determine standalone or paired configuration, valve variant and explosion protection from your vessel. Tell us the volume, bottom shape and medium.
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