+44 (0)1785 761344 or 
info@polyflon.co.ukDiaphragm Filter (7F)
Series 7F Diaphragm Filter
The Series 7F diaphragm filter is an extremely versatile unit where filter paper changes are fast & easy: simply unscrew the knurled nut joining the two halves of the filter housing together & place the circular PTFE filter paper on the loose grid. As standard, the diaphragm filter has female BSP1/4” ports & can be panel mounted using the fixing clips pictured below. PTFE filters of this style are by far the most widely used in pharmaceutical & biotechnology applications. Series 7F PTFE filters are also used in gas analysis and environmental monitoring equipment.
Availability
| Part No. | Sizes | PVDF | PTFE |
|---|---|---|---|
| 7F0100.05 | Filter pore size 5μm DN04 1/4” BSP | x | x |
| 7F0100.25 | Filter pore size 25μm DN04 1/4” BSP | x | x |
| 7F0100.50 | Filter pore size 50μm DN04 1/4” BSP | x | x |
| 7F0100.100 | Filter pore size 100μm DN04 1/4” BSP | x | x |
| Other filter pore sizes available on request. DN – Through bore (mm). Replacement filter papers are available in standard packs of 50 off. | |||
| Dimensions (mm) | |||||
|---|---|---|---|---|---|
| G/BSP | B | D | L | L1 | SW |
| 1/4” | Ø63 | Ø25 | ~114 | 10 | 14 |
| Materials of Construction | ||
|---|---|---|
| 1. Housing | PVDF | PTFE |
| 2. Filter Paper | PTFE | PTFE |
| 3. O-Ring * | Viton® | Viton® |
| * EPDM, Kalrez® on request | ||
| Technical Data | |
|---|---|
| Max. media temperature * | PVDF: 120 °C, PTFE: 150 °C |
| Nominal pressure rating | PVDF: 10 Bar, PTFE: 6 Bar |
| Flow rate ** | 1.500 NL/h, Air: P 0.1 bar |
| Filter surface | 12.5 cm2 |
| * Starting from the nominal pressure rating at (20 °C), the permissible pressure reduces with increasing temperature! | |
| ** Without filter membrane! | |
Click here for printable version – Diaphragm Filter
he data listed falls within the normal range of product properties but they should not be used to establish specification limits nor used alone as the basis of design. Polyflon Technology Limited assumes no responsibility for any advice furnished by it or for results obtained with respect to these products. All such advice is provided gratis and the buyer assumes sole responsibility for the results obtained in reliance thereon.
