WFIFIW1 welded stainless steel pre-filters up to 14 bar
The WFIFIW1 welded pre-filter has an element made of sintered stainless steel 1.4404 in a welded design and traps solid particles larger than 1 µm. It withstands up to +150 °C.
The WFIFIW1 filter comes in 16 sizes (DN15 to DN200) with flows of 2,500 to 352,000 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.
WFIFIW1 filters by size
The size determines the connection and the flow. Each size has its own PF range spare element.
| WFIFIW1 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 |
| WFIFIW1-010 | DN15 flange | 2,500 | 150 | 230 × 76.1 mm | 3.5 kg | PFIW1-010V |
| WFIFIW1-018 | DN20 flange | 3,750 | 225 | 263 × 76.1 mm | 4.3 kg | PFIW1-018V |
| WFIFIW1-030 | DN25 flange | 5,250 | 315 | 279 × 88.9 mm | 5.7 kg | PFIW1-030V |
| WFIFIW1-047 | DN32 flange | 7,000 | 420 | 348 × 88.9 mm | 6.6 kg | PFIW1-047V |
| WFIFIW1-070 | DN40 flange | 10,000 | 600 | 391 × 114.3 mm | 8 kg | PFIW1-070V |
| WFIFIW1-094 | DN50 flange | 15,000 | 900 | 444 × 114.3 mm | 9.8 kg | PFIW1-094V |
| WFIFIW1-150 | DN50 flange | 21,000 | 1,260 | 571 × 114.3 mm | 11 kg | PFIW1-150V |
| WFIFIW1-175 | DN65 flange | 28,000 | 1,680 | 752 × 139.7 mm | 14.2 kg | PFIW1-175V |
| WFIFIW1-200 | DN80 flange | 40,000 | 2,400 | 978 × 139.7 mm | 21.2 kg | PFIW1-200V |
| WFIFIW1-240 | DN80 flange | 60,000 | 3,600 | 1,041 × 168.3 mm | 22.9 kg | PFIW1-240V |
| WFIFIW1-450 | DN100 flange | 84,000 | 5,040 | 981 × 219.1 mm | 55 kg | 3× PFIW1-175V |
| WFIFIW1-600 | DN100 flange | 112,000 | 6,720 | 1,288 × 219.1 mm | 64 kg | 3× PFIW1-200V |
| WFIFIW1-900 | DN150 flange | 160,000 | 9,600 | 1,310 × 273 mm | 87 kg | 4× PFIW1-200V |
| WFIFIW1-1200 | DN150 flange | 224,000 | 13,440 | 1,351 × 323.9 mm | 110 kg | 6× PFIW1-200V |
| WFIFIW1-1800 | DN200 flange | 288,000 | 17,280 | 1,496 × 406.4 mm | 200 kg | 8× PFIW1-200V |
| WFIFIW1-2000 | DN200 flange | 352,000 | 21,120 | 1,496 × 406.4 mm | 200 kg | 10× PFIW1-200V |
The flows apply to a pressure of 7 bar and a temperature of +20 °C. Dimensions 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 welded pre-filter IW1 is the second design of the 1 µm stage alongside the sintered pre-filter I1 and goes in the same place in the filtration. It does not trap oil; the manufacturer does not state an ISO 8573-1 class for it.
Where to place it
After the WFIFN5 basic filter or the WFIFP fibre pre-filter, before the WFIFM fine pre-filter — instead of the WFIFI1 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.
| WFIFIW1 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 | – |
| 600 (DN100 flange) | 70,560 | 112,000 | 154,560 | – |
| 900 (DN150 flange) | 100,800 | 160,000 | 220,800 | – |
| 1200 (DN150 flange) | 141,120 | 224,000 | 309,120 | – |
| 1800 (DN200 flange) | 181,440 | 288,000 | 397,440 | – |
| 2000 (DN200 flange) | 221,760 | 352,000 | 485,760 | – |
Element, condensate drainage and maintenance
A PF range element is fitted in the housing — for example, the PFIW1-010V for the WFIFIW1-010. The same element also fits the PFIW1-010, HPFIW1-010, WFITIW1-010, WFIWIW1-010 and WHFITIW1-010. 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 sizes from DN100.
Replace the element at least once every 12 months. Once a year, also check the housing for visible damage.
Accessories for WFIFIW1 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 IW1 also comes in the PFIW1 filters up to 14 bar, HPFIW1 filters up to 50 bar, WFITIW1 filters up to 14 bar, WFIWIW1 filters up to 14 bar and WHFITIW1 filters up to 50 bar. The elements are the same for all ranges.
Ventilek’s tip
Two designs of the 1 µm stage. The sintered pre-filter I1 and the welded IW1 have the same filtration rating and temperature up to +150 °C and go in the same place in the filtration.
- What filtration rating does the WFIFIW1 pre-filter have?
- The element traps particles larger than 1 µm. The manufacturer does not state an ISO 8573-1 class for it.
- How does it differ from the WFIFI1?
- Both elements are made of sintered stainless steel 1.4404 with a filtration rating of 1 µm; the IW1 element is of a welded design.
- When should the element be replaced?
- At least once every 12 months.
Bestsellers
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List of products
With a DN15 connection and a flow of 2,500 l/min at 7 bar, the WFIFIW1-010 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN20 connection and a flow of 3,750 l/min at 7 bar, the WFIFIW1-018 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN25 connection and a flow of 5,250 l/min at 7 bar, the WFIFIW1-030 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN32 connection and a flow of 7,000 l/min at 7 bar, the WFIFIW1-047 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN40 connection and a flow of 10,000 l/min at 7 bar, the WFIFIW1-070 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN50 connection and a flow of 15,000 l/min at 7 bar, the WFIFIW1-094 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN150 connection and a flow of 224,000 l/min at 7 bar, the WFIFIW1-1200 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 10 bar, welded...
With a DN50 connection and a flow of 21,000 l/min at 7 bar, the WFIFIW1-150 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN65 connection and a flow of 28,000 l/min at 7 bar, the WFIFIW1-175 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN200 connection and a flow of 288,000 l/min at 7 bar, the WFIFIW1-1800 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 10 bar, welded...
With a DN80 connection and a flow of 40,000 l/min at 7 bar, the WFIFIW1-200 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN200 connection and a flow of 352,000 l/min at 7 bar, the WFIFIW1-2000 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 10 bar, welded...
With a DN80 connection and a flow of 60,000 l/min at 7 bar, the WFIFIW1-240 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, welded...
With a DN100 connection and a flow of 84,000 l/min at 7 bar, the WFIFIW1-450 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 10 bar, welded...
With a DN100 connection and a flow of 112,000 l/min at 7 bar, the WFIFIW1-600 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 10 bar, welded...
With a DN150 connection and a flow of 160,000 l/min at 7 bar, the WFIFIW1-900 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 10 bar, welded...