Bottom magnetic mxier
Tank Magnetic Mixer
Bottom entry magnetic agitator with a welded isolation sleeve.
View specifications →
1 model bottom entry no dynamic seal
Bottom Mounted Magnetic Agitators For Sealed Vessels
Bottom entry agitators coupled through a welded isolation sleeve, so the vessel has no rotating seal and nothing can leak or migrate into the product.
The Range
The Bottom Entry Magnetic Agitator
Mounted in the dished bottom of a reaction or compounding vessel, with vertical and horizontal drive arrangements and a speed reducer where slow mixing is required.
Who Buys This Line
- Pharmaceutical and biotech plants working to GMP requirements
- Producers handling flammable or explosible liquids that must not leak
- Compounding operations where low liquid levels still need mixing
- Plants that cannot accept particles from a mechanical seal in the product
Problems It Solves
The mechanical seal leaks
A static seal formed by a welded isolation sleeve replaces the dynamic mechanical seal, which removes the leak path completely.
Dead space traps product
The mixing unit sits in the bottom of the vessel with no shaft through the head, so there is no dead space around a seal housing to clean.
Small volumes will not mix
Because the impeller is at the bottom, mixing still works when the vessel holds only a small amount of liquid.
Why This Line
Why Bottom Entry And Magnetic
Sealed By Welding Not By Contact
Static dead sealing through a welded isolative sleeve solves the leaking problem that mechanical seals bring to sterile vessels.
Simple To Strip And Clean
Simple construction, easy to dismantle, easy to clean and no dead space, which is what a cleaning validation needs.
Pressure Range For Real Vessels
Working pressure from 0.09 to 0.8 MPa, with the impeller style chosen for the medium.
Application Scenarios
Vessels That Use This Mixer
Compounding And Reaction Tanks
Mixing devices in stainless steel reaction and liquid compounding tanks where the product must stay sterile.
Flammable Or Explosible Duty
Places that need high standard sealing because the liquid is inflammable, explosible or prone to leak.
Biological And Food Preparation
Pharmaceutical, biological engineering and food vessels designed around GMP requirements.
Industries Served By This Line
Selection Guide
Specifying A Magnetic Mixer
Vessel Size And Level
Working volume and the lowest liquid level that still has to be mixed. Bottom entry earns its place at low levels.
Medium And Viscosity
Viscosity and solids decide impeller style and whether a speed reducer is needed.
Pressure And Temperature
Working pressure between 0.09 and 0.8 MPa is the published range. Vacuum and sterilisation temperatures must be stated.
Mounting Orientation
Vertical or horizontal drive arrangement to suit the vessel and the space under it.
Answers
Magnetic Mixers FAQ
How does a magnetic mixer avoid a seal?
The drive magnet turns outside a welded isolation sleeve and the impeller magnet turns inside it. The sleeve is a static welded seal, so there is no rotating seal to leak.
What working pressure is supported?
The published range is 0.09 to 0.8 MPa, selected per vessel. A speed reducer and vertical or horizontal arrangements are available.
Can it mix a nearly empty vessel?
Yes, that is one reason for bottom mounting. The mixing unit is installed at the bottom so it can mix small quantities of liquid.
Is it suitable for GMP work?
The mixer is designed for pharmaceutical, biological engineering and food vessels in line with GMP practice, with no dead space and easy dismantling for cleaning.
Which materials are used?
Wetted parts in 304 or 316 stainless steel with mirror or matt polish to Ra below 0.8 um.
Engineering Notes
Guides For This Line
Material Guide
SS304 Or SS316L Choosing The Grade For Tanks Pumps And Fittings
The difference is molybdenum and carbon content. What that means on your plant is chloride resistance and how the material behaves after welding.
Read the guide →
Installation Guide
Tank Manholes And Spray Balls Specifying The Parts That Make A Vessel Work
A vessel is judged by how easily it opens, how completely it cleans and how well the seal survives. All three are decided by parts that cost a fraction of the tank.
Read the guide →Send The Vessel Drawing
Volume, lowest working level, pressure and medium decide the head and the drive. A tank GA drawing answers most of it.