Discstar® PV
Depth Filter Module Housing in Special Design for Pharmaceuticals and other High Purity Applications
Characteristics
The DISCSTAR® is a high precision stainless steel filter housing for lenticular depth filter modules, designed and manufactured for heavy duty use – 24/7. The enclosed system allows high capacity depth filtration with no drip loss (no edge leaking). The double-o-ring sealing and bayonet interlock ensures highest integrity at easy handling. The pharma version has a slanted internal base plate for maximum draining. A broad variety of options will promote the ideal solution for your depth filtration process.
Applications
DISCSTAR® series filters are made for a broad field of solid liquid separation applications, with a solid content up to approx. 1%.
Higher solid contents need precoat filtration or other technology as prefiltration. The technology is designed for high service life of filter media and equipment.
Its high filtration performance, top manufacturing quality and com-prehensive set of certificates meet the high standards of sensitive applications such as:
- Biotech
- Pharmaceuticals (intermediates, API, vaccines, injectables...)
- Cosmetics
- Chemicals (hazardous liquids, solvents, glues, paints, inks, surfactants, process water...)
For many processes which need absolute microbiological retention, such as injectable pharmaceuticals, it is recommended to terminate the process with an absolute retention (0.45 or 0.2 µm) membrane cartridge.
Working principle
Depth filter module(s) are placed in a sealed housing. The inside of the module core is connected to the filtrate side and the void volume between module and dome is filled with unfiltrate. A differential pressure between the unfiltrate and filtrate side pushes the liquid in a constant flow through depth filter sheets inside the modules. When the modules are exhausted, the sheets are plugged with solid particles resulting in a differential pressure increases. This is the right time to regenerate or replace the module(s).
Module sizes / filter areas
Both Discstar® 30 and 40 are available in different heights depen-dent upon the desired number of modules. The size (see below) indicates the maximum module capacity for each housing.
| Filter area | Size 1 | Size 2 | Size 3 | Size 4 |
|---|---|---|---|---|
| Discstar® 30 | 1.8 m2 (16 sq ft) |
3.6 m2 (38 sq ft) |
5.4 m2 (57 sq ft) |
7.2 m2 (76 sq ft) |
| Discstar® 40 | n.a. | 7.2 m2 (76 sq ft) |
10.8 m2 (114 sq ft) |
14.4 m2 (152 sq ft) |
Technical Data
| Discstar® | 30 | 40 |
|---|---|---|
| Module diameter | 12” | 16” |
| Max. operating pressure | 10 bar/145 psi | |
| Max. operating temp. | 140¡C (280 ˚F) | |
| Inlet / outlet connection Sanitary clamps (triclamps) |
1” (size 1) 1.5” (size 2-4) |
2” |
| Module interlock | Double-o-ring (= Bayonet) (flat gasket upon request) |
|
| Closing mechanism | Clamp ring for quick release (swing bolts upon request) |
swing bolts |
Limiting factor for the ▲p of a module filtration is the sheet grade and the application.
Material
| Discstar® | 30 and40 |
|---|---|
| Stainless steel material (product contact) | AISI 316 L |
| Other stainless steel parts | AISI 304 |
| Surface finish (inside) | Electro-polished, Ra<0.8 μm All welds ground smooth |
| Surface finish (outside) | Electro polished Ra<1.2 μm |
| Gaskets | EPDM |
Filtrox quality assurance
Filtrox assures the best quality control according to international standards:
- ISO 9001 (Quality Management)
Certificates and special documentation
Typically for pharmaceutical or near pharmaceutical applications we provide the following documents on request:
- EU Guideline 89/392/EWG
- Material certificate 2.2 or 3.1 B (only for material in direct contact with the product)
- Surface roughness (< 0.8 µm[Ra])
- Optional certificates
Optional we can provide the following certificates:
- ASME (U-Stamp)
- Guideline ATEX 94/9/EG
- Pressure vessel guideline DGR 97/23/EG
- Ferrite measurements
- Welder certificate
- Color penetration test
- Pickle protocol
Options
The typical setup requires gauges and valves, as well as a check valve.
Discstar® is available in many options:
- Closing mechanism can be a single bolt clamp ring with pressure vessel certificate (only 12") or swing bolts (12" and 16" versions).
- Connections can be triclamp (sanitary), or Diary (DIN).
- Housings with a higher edge at the base plate help avoiding spillage of hazardous liquids.
- For filtrations with controlled temperature (cooling or heating) we recommend a double shell dome for temperature controlled liquid.
- For larger filter area, Discstar® is also available as a multistack housing. (Up to 4 stacks, 4 high, 16" under one dome).
- Gaskets: EPDM (standard), silicone, Viton® or Teflon® encapsuled silicone
Converter adaptors
Converters from «double-o-ring» to «flat adaptors are available for both directions. They can be quickly and easily applied.
Options of Closing Mechanisms
- SINGLE BOLT CLAMP RING WITH PRESSURE VESSEL CERTIFICATE
- SWING BOLTS FOR PRESSURE VESSELS
pdf Download of Technical Info Sheet
Please download the technical info sheet from here.