WFIFN5 stainless steel basic mesh filters up to 14 bar
The WFIFN5 basic filter has a wrapped element made of stainless steel mesh 1.4301 and traps solid particles larger than 5 µm.
The WFIFN5 filter comes in 11 sizes (DN15 to DN100) with flows of 2,500 to 84,000 l/min at 7 bar; working pressure up to 14 bar, sizes from DN100 up to 10 bar. It is one of the stages of the WFIF filters — the housing is the same for all stages, only the element differs.
WFIFN5 filters by size
The size determines the connection and the flow. Each size has its own PF range spare element.
| WFIFN5 filters and spare elements by size | ||||||
|---|---|---|---|---|---|---|
| Filter | Connection | l/min at 7 bar | Nm³/h at 7 bar | Height A × diameter C | Weight | Spare element |
| WFIFN5-010 | DN15 flange | 2,500 | 150 | 230 × 76.1 mm | 3.5 kg | PFN5-010V |
| WFIFN5-018 | DN20 flange | 3,750 | 225 | 263 × 76.1 mm | 4.3 kg | PFN5-018V |
| WFIFN5-030 | DN25 flange | 5,250 | 315 | 279 × 88.9 mm | 5.7 kg | PFN5-030V |
| WFIFN5-047 | DN32 flange | 7,000 | 420 | 348 × 88.9 mm | 6.6 kg | PFN5-047V |
| WFIFN5-070 | DN40 flange | 10,000 | 600 | 391 × 114.3 mm | 8 kg | PFN5-070V |
| WFIFN5-094 | DN50 flange | 15,000 | 900 | 444 × 114.3 mm | 9.8 kg | PFN5-094V |
| WFIFN5-150 | DN50 flange | 21,000 | 1,260 | 571 × 114.3 mm | 11 kg | PFN5-150V |
| WFIFN5-175 | DN65 flange | 28,000 | 1,680 | 752 × 139.7 mm | 14.2 kg | PFN5-175V |
| WFIFN5-200 | DN80 flange | 40,000 | 2,400 | 978 × 139.7 mm | 21.2 kg | PFN5-200V |
| WFIFN5-240 | DN80 flange | 60,000 | 3,600 | 1,041 × 168.3 mm | 22.9 kg | PFN5-240V |
| WFIFN5-450 | DN100 flange | 84,000 | 5,040 | 981 × 219.1 mm | 55 kg | 3× PFN5-175V |
The flows apply to a pressure of 7 bar and a temperature of +20 °C. Dimensions and weights according to the manufacturer’s technical data sheet; you will find further data on the product page of each filter.
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When to use it
The basic filter is enough where the main concern is solid contaminants and oil in the air is not a problem. It most often serves as a pre-filter before finer stages, which then last longer. The manufacturer does not state an ISO 8573-1 class for it.
Like the housing, the stainless steel mesh withstands up to +150 °C.
Where to place it
After the WFIFN25 coarse filter or directly at the start of the filtration, before the WFIFI1 sintered pre-filter or the WFIFM fine pre-filter.
Flow by pressure
The catalogue flows apply to a pressure of 7 bar and a temperature of +20 °C. At a different pressure, they are multiplied by the correction factor: 1.88 at 14 bar.
| WFIFN5 filter flow in l/min by pressure | ||||
|---|---|---|---|---|
| Size (connection) | 4 bar | 7 bar | 10 bar | 14 bar |
| 010 (DN15 flange) | 1,575 | 2,500 | 3,450 | 4,700 |
| 018 (DN20 flange) | 2,363 | 3,750 | 5,175 | 7,050 |
| 030 (DN25 flange) | 3,308 | 5,250 | 7,245 | 9,870 |
| 047 (DN32 flange) | 4,410 | 7,000 | 9,660 | 13,160 |
| 070 (DN40 flange) | 6,300 | 10,000 | 13,800 | 18,800 |
| 094 (DN50 flange) | 9,450 | 15,000 | 20,700 | 28,200 |
| 150 (DN50 flange) | 13,230 | 21,000 | 28,980 | 39,480 |
| 175 (DN65 flange) | 17,640 | 28,000 | 38,640 | 52,640 |
| 200 (DN80 flange) | 25,200 | 40,000 | 55,200 | 75,200 |
| 240 (DN80 flange) | 37,800 | 60,000 | 82,800 | 112,800 |
| 450 (DN100 flange) | 52,920 | 84,000 | 115,920 | – |
Element, condensate drainage and maintenance
A PF range element is fitted in the housing — for example, the PFN5-010V for the WFIFN5-010. The same element also fits the PFN5-010 and WFITN5-010. Flanged filters from DN100 have several elements — their number is given in the table for each size. Element working temperature +1.5 to +150 °C.
The filter is supplied with an element, without a condensate drain. For WFIF filters, the manufacturer offers the AOK20SS stainless steel float drain up to 20 bar and +65 °C and, for the head, the MDHI 50-K differential pressure gauge. The drain outlet in the bottom has a G 1/2" thread, G 1" for size DN100.
Replace the element at least once every 12 months. Once a year, also check the housing for visible damage.
Accessories for WFIFN5 filters
MDHI 50-K gauge
Differential pressure gauge with connecting tubes; it shows how clogged the element is.
The same stage in other ranges
Stage N5 also comes in the PFN5 filters up to 14 bar and WFITN5 filters up to 14 bar. The elements are the same for all ranges.
Ventilek’s tip
A mesh is enough for contaminants. When the air does not have to be oil-free, the N5 stainless steel mesh is enough. For oil aerosol, add the fine pre-filter M.
- What filtration rating does the WFIFN5 basic filter have?
- The mesh traps particles larger than 5 µm. The manufacturer does not state an ISO 8573-1 class for it.
- Does it also trap oil?
- No. Oil aerosol is handled by the fine pre-filter M.
- When should the element be replaced?
- At least once every 12 months.
Product sorting
List of products
With a DN15 connection and a flow of 2,500 l/min at 7 bar, the WFIFN5-010 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded stainless...
With a DN20 connection and a flow of 3,750 l/min at 7 bar, the WFIFN5-018 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded stainless...
With a DN25 connection and a flow of 5,250 l/min at 7 bar, the WFIFN5-030 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded stainless...
With a DN32 connection and a flow of 7,000 l/min at 7 bar, the WFIFN5-047 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded stainless...
With a DN40 connection and a flow of 10,000 l/min at 7 bar, the WFIFN5-070 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded...
With a DN50 connection and a flow of 15,000 l/min at 7 bar, the WFIFN5-094 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded...
With a DN50 connection and a flow of 21,000 l/min at 7 bar, the WFIFN5-150 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded...
With a DN65 connection and a flow of 28,000 l/min at 7 bar, the WFIFN5-175 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded...
With a DN80 connection and a flow of 40,000 l/min at 7 bar, the WFIFN5-200 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded...
With a DN80 connection and a flow of 60,000 l/min at 7 bar, the WFIFN5-240 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 14 bar, welded...
With a DN100 connection and a flow of 84,000 l/min at 7 bar, the WFIFN5-450 basic filter traps solid contaminants larger than 5 µm. Working pressure up to 10 bar, welded...