WFIWR stainless steel dust filters up to 14 bar
The WFIWR dust filter has a pleated element of borosilicate microfibres and traps solid particles and dust larger than 1 µm — solid particle class 3 according to ISO 8573-1. The element withstands +120 °C.
The WFIWR filter comes in 11 sizes (pipe ø 17.2 to 88.9 mm) 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 WFIW filters — the housing is the same for all stages, only the element differs.
WFIWR filters by size
The size determines the connection and the flow. Each size has its own PF range spare element.
| WFIWR 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 |
| WFIWR-005 | welding end ø 17.2 mm | 1,250 | 75 | 202 × 76.1 mm | 1.8 kg | PFR-005V |
| WFIWR-010 | welding end ø 21.3 mm | 2,500 | 150 | 240 × 76.1 mm | 2 kg | PFR-010V |
| WFIWR-018 | welding end ø 26.9 mm | 3,750 | 225 | 254 × 76.1 mm | 2 kg | PFR-018V |
| WFIWR-030 | welding end ø 33.7 mm | 5,250 | 315 | 280 × 88.9 mm | 3 kg | PFR-030V |
| WFIWR-047 | welding end ø 42.4 mm | 7,000 | 420 | 337 × 88.9 mm | 3 kg | PFR-047V |
| WFIWR-070 | welding end ø 48.3 mm | 10,000 | 600 | 376 × 114.3 mm | 4.3 kg | PFR-070V |
| WFIWR-094 | welding end ø 60.3 mm | 15,000 | 900 | 457 × 114.3 mm | 4.8 kg | PFR-094V |
| WFIWR-150 | welding end ø 60.3 mm | 21,000 | 1,260 | 583 × 114.3 mm | 5.3 kg | PFR-150V |
| WFIWR-175 | welding end ø 76.1 mm | 28,000 | 1,680 | 740 × 139.7 mm | 9 kg | PFR-175V |
| WFIWR-200 | welding end ø 88.9 mm | 40,000 | 2,400 | 1,004 × 139.7 mm | 10.8 kg | PFR-200V |
| WFIWR-240 | welding end ø 88.9 mm | 60,000 | 3,600 | 1,029 × 168.3 mm | 16.2 kg | PFR-240V |
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 dust filter R is suitable where the air must be free of dust and fine solid particles but oil is not a problem. The manufacturer does not state an oil class for it — oil aerosol is handled by the fine pre-filter M.
Like the fine pre-filter and the microfilter, the element is made of borosilicate microfibres and withstands +120 °C.
Where to place it
After the WFIWP fibre pre-filter or the WFIWN5 basic filter, before the WFIWM 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.
| WFIWR filter flow in l/min by pressure | ||||
|---|---|---|---|---|
| Size (connection) | 4 bar | 7 bar | 10 bar | 14 bar |
| 005 (welding end ø 17.2 mm) | 788 | 1,250 | 1,725 | 2,350 |
| 010 (welding end ø 21.3 mm) | 1,575 | 2,500 | 3,450 | 4,700 |
| 018 (welding end ø 26.9 mm) | 2,363 | 3,750 | 5,175 | 7,050 |
| 030 (welding end ø 33.7 mm) | 3,308 | 5,250 | 7,245 | 9,870 |
| 047 (welding end ø 42.4 mm) | 4,410 | 7,000 | 9,660 | 13,160 |
| 070 (welding end ø 48.3 mm) | 6,300 | 10,000 | 13,800 | 18,800 |
| 094 (welding end ø 60.3 mm) | 9,450 | 15,000 | 20,700 | 28,200 |
| 150 (welding end ø 60.3 mm) | 13,230 | 21,000 | 28,980 | 39,480 |
| 175 (welding end ø 76.1 mm) | 17,640 | 28,000 | 38,640 | 52,640 |
| 200 (welding end ø 88.9 mm) | 25,200 | 40,000 | 55,200 | 75,200 |
| 240 (welding end ø 88.9 mm) | 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 PFR-010V for the WFIWR-010. The same element also fits the PFR-010, HPFR-010, WFITR-010, WFIFR-010 and WHFITR-010. Element working temperature +1.5 to +120 °C.
The filter is supplied with an element, without a condensate drain. For WFIW 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 WFIWR 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 R also comes in the PFR filters up to 14 bar, HPFR filters up to 50 bar, WFITR filters up to 14 bar, WFIFR filters up to 14 bar and WHFITR filters up to 50 bar. The elements are the same for all ranges.
Ventilek’s tip
Dust, or oil too? The class 3 dust filter R traps dust down to 1 µm. If oil aerosol is also a problem, add a fine pre-filter M after it.
- What filtration rating does the WFIWR dust filter have?
- The element traps particles larger than 1 µm, solid particle class 3 according to ISO 8573-1.
- What temperature does it withstand?
- The element from +1.5 to +120 °C.
- When should the element be replaced?
- At least once every 12 months.
Product sorting
List of products
With a ø 17.2 mm pipe connection and a flow of 1,250 l/min at 7 bar, the WFIWR-005 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 21.3 mm pipe connection and a flow of 2,500 l/min at 7 bar, the WFIWR-010 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 26.9 mm pipe connection and a flow of 3,750 l/min at 7 bar, the WFIWR-018 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 33.7 mm pipe connection and a flow of 5,250 l/min at 7 bar, the WFIWR-030 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 42.4 mm pipe connection and a flow of 7,000 l/min at 7 bar, the WFIWR-047 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 48.3 mm pipe connection and a flow of 10,000 l/min at 7 bar, the WFIWR-070 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 60.3 mm pipe connection and a flow of 15,000 l/min at 7 bar, the WFIWR-094 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 60.3 mm pipe connection and a flow of 21,000 l/min at 7 bar, the WFIWR-150 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 76.1 mm pipe connection and a flow of 28,000 l/min at 7 bar, the WFIWR-175 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 88.9 mm pipe connection and a flow of 40,000 l/min at 7 bar, the WFIWR-200 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...
With a ø 88.9 mm pipe connection and a flow of 60,000 l/min at 7 bar, the WFIWR-240 dust filter traps solid particles and dust larger than 1 µm, solid particle class 3 according...