The Clear One
The Hoffmann Precoat Filter is designed for extremely fine filtration. The systems work with great success on applications that require an extremely high surface finish, yet create small amounts of stock removal (i.e. honing and super finishing) as well as EDM applications.
Systems are available with flow rates ranging from 5 GPM to 1,200 GPM and are available in manual, semi-automatic, and fully automatic versions. All automatic systems come with drying stations.
Using the principle of depth filtration, the filter plates inside the vessel are “precoated” with a filter aid such as cellulose or diatomaceous earth. The filter cake grows and compresses steadily during the filtering cycle, dropping throughput capacity and increasing the pressure in the vessel. When a maximum differential pressure is reached or a preset filtration time ends, the filter plates are cleaned and filter cake is dried.
By utilizing horizontal filter plates, the process can be interrupted at any time without disturbing the filter cake. Manual systems are available with 27 or 43 square feet filter areas, and can be customized with magnetic separators and coolers to meet your exact needs. Look below for our precoat filters gallery.
For ultra-fine and clear filtration of fluids
For highly demanding applications
For starting off where others stop
Details
- Honing
- Super finishing
- EDM applications
- Available in manual and automatic models
- Provide extremely fine filtration
- Coolers
- Magnetic separators
| Filter Type | Filter Area Sq.Ft. | Tank Capacity (Gallons) | Flow Rate (GPM) | Dimensions (W x L) Inches |
|---|---|---|---|---|
| ASF 35.25 | 27 | 100 | 20 | 40 x 50 |
| ASF 80.40 | 43 | 100 | 40 | 40 x 50 |
| ASF 35.25.2 | 2×27 | 250 | 20 | 60 x 80 |
| ASF 80.40.2 | 2×43 | 250 | 40 | 60 x 80 |
Precoat Filters Gallery
Our Products
The Indestructible One – For applications with a high stock removal rate, and where fine filtration is required, nothing is more efficient.
The Deep Bed Band Filter System takes the traditional band filter concept to the next level. Superior filtration and no messy overflows.
The Original – the Hoffmann HSF Suction Belt Filtration System has become a global market leader for gear grinding applications.
Ideal for water-based applications, the Flat Bed Band Filter Systems are fully automated yet economical systems.
Hoffmann Filter Corporation offers a complete line of accessories to compliment our base filter systems.
The Centrifuge Coolant System – A different approach to cleaning cutting fluids and separation employing forces that exceed 1000 G’s.
The Clear One – For extremely fine filtration and great success on applications that require an extremely high surface finish.
At Hoffmann Filter Corporation, we have the ability to use several different models of our filters to run as centralized systems.