WFITN25 stainless steel coarse mesh filters up to 14 bar
The WFITN25 coarse filter has a wrapped element made of stainless steel mesh 1.4301 and traps solid particles larger than 25 µm. It is the first filtration stage: it removes larger contaminants before they reach the finer stages, which then last longer.
The WFITN25 filter comes in 12 sizes (G 1/4" to 3") with flows of 1,250 to 60,000 l/min at 7 bar; working pressure up to 14 bar. It is one of the stages of the WFIT filters — the housing is the same for all stages, only the element differs.
WFITN25 filters by size
The size determines the connection and the flow. Each size has its own PF range spare element.
| WFITN25 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 |
| WFITN25-005 | G 1/4" | 1,250 | 75 | 204 × 76.1 mm | 1.9 kg | PFN25-005V |
| WFITN25-007 | G 3/8" | 1,750 | 105 | 235 × 76.1 mm | 2.1 kg | PFN25-007V |
| WFITN25-010 | G 1/2" | 2,500 | 150 | 239 × 76.1 mm | 2.2 kg | PFN25-010V |
| WFITN25-018 | G 3/4" | 3,750 | 225 | 263 × 76.1 mm | 2.3 kg | PFN25-018V |
| WFITN25-030 | G 1" | 5,250 | 315 | 278 × 88.9 mm | 3.1 kg | PFN25-030V |
| WFITN25-047 | G 1 1/4" | 7,000 | 420 | 348 × 88.9 mm | 3.4 kg | PFN25-047V |
| WFITN25-070 | G 1 1/2" | 10,000 | 600 | 376 × 114.3 mm | 4.6 kg | PFN25-070V |
| WFITN25-094 | G 2" | 15,000 | 900 | 458 × 114.3 mm | 5.4 kg | PFN25-094V |
| WFITN25-150 | G 2" | 21,000 | 1,260 | 571 × 114.3 mm | 6.1 kg | PFN25-150V |
| WFITN25-175 | G 2 1/2" | 28,000 | 1,680 | 722 × 139.7 mm | 11.4 kg | PFN25-175V |
| WFITN25-200 | G 3" | 40,000 | 2,400 | 1,004 × 139.7 mm | 12 kg | PFN25-200V |
| WFITN25-240 | G 3" | 60,000 | 3,600 | 1,029 × 168.3 mm | 16 kg | PFN25-240V |
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 coarse filter is suitable at the start of the filtration, where larger contaminants from the compressor or the air line enter the air. It does not trap oil or vapours; 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
At the start of the filtration, before the WFITN5 basic filter or the WFITI1 sintered 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.
| WFITN25 filter flow in l/min by pressure | ||||
|---|---|---|---|---|
| Size (connection) | 4 bar | 7 bar | 10 bar | 14 bar |
| 005 (G 1/4") | 788 | 1,250 | 1,725 | 2,350 |
| 007 (G 3/8") | 1,103 | 1,750 | 2,415 | 3,290 |
| 010 (G 1/2") | 1,575 | 2,500 | 3,450 | 4,700 |
| 018 (G 3/4") | 2,363 | 3,750 | 5,175 | 7,050 |
| 030 (G 1") | 3,308 | 5,250 | 7,245 | 9,870 |
| 047 (G 1 1/4") | 4,410 | 7,000 | 9,660 | 13,160 |
| 070 (G 1 1/2") | 6,300 | 10,000 | 13,800 | 18,800 |
| 094 (G 2") | 9,450 | 15,000 | 20,700 | 28,200 |
| 150 (G 2") | 13,230 | 21,000 | 28,980 | 39,480 |
| 175 (G 2 1/2") | 17,640 | 28,000 | 38,640 | 52,640 |
| 200 (G 3") | 25,200 | 40,000 | 55,200 | 75,200 |
| 240 (G 3") | 37,800 | 60,000 | 82,800 | 112,800 |
Element, condensate drainage and maintenance
A PF range element is fitted in the housing — for example, the PFN25-010V for the WFITN25-010. The same element also fits the PFN25-010 and WFIFN25-010. Element working temperature +1.5 to +150 °C.
The filter is supplied with an element, without a condensate drain. For WFIT 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.
Replace the element at least once every 12 months. Once a year, also check the housing for visible damage.
Accessories for WFITN25 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 N25 also comes in the PFN25 filters up to 14 bar and WFIFN25 filters up to 14 bar. The elements are the same for all ranges.
Ventilek’s tip
A coarse mesh protects the fine ones. When larger contaminants come loose in the air line, the N25 stainless steel mesh traps them, and the fine elements after it do not clog as quickly.
- What filtration rating does the WFITN25 coarse filter have?
- The mesh traps particles larger than 25 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.
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List of products
With a G 1/4" connection and a flow of 1,250 l/min at 7 bar, the WFITN25-005 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...
With a G 3/8" connection and a flow of 1,750 l/min at 7 bar, the WFITN25-007 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...
With a G 1/2" connection and a flow of 2,500 l/min at 7 bar, the WFITN25-010 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...
With a G 3/4" connection and a flow of 3,750 l/min at 7 bar, the WFITN25-018 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...
With a G 1" connection and a flow of 5,250 l/min at 7 bar, the WFITN25-030 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...
With a G 1 1/4" connection and a flow of 7,000 l/min at 7 bar, the WFITN25-047 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages...
With a G 1 1/2" connection and a flow of 10,000 l/min at 7 bar, the WFITN25-070 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages...
With a G 2" connection and a flow of 15,000 l/min at 7 bar, the WFITN25-094 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...
With a G 2" connection and a flow of 21,000 l/min at 7 bar, the WFITN25-150 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...
With a G 2 1/2" connection and a flow of 28,000 l/min at 7 bar, the WFITN25-175 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages...
With a G 3" connection and a flow of 40,000 l/min at 7 bar, the WFITN25-200 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...
With a G 3" connection and a flow of 60,000 l/min at 7 bar, the WFITN25-240 coarse filter traps coarse solid contaminants larger than 25 µm and protects the finer stages after...