WFIWA stainless steel activated carbon filters up to 14 bar
The WFIWA activated carbon filter removes oil vapours, hydrocarbons and odours that the mechanical stages do not trap. The wrapped element is made of borosilicate microfibres with activated carbon and works up to +45 °C.
The WFIWA 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.
WFIWA filters by size
The size determines the connection and the flow. Each size has its own PF range spare element.
| WFIWA 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 |
| WFIWA-005 | welding end ø 17.2 mm | 1,250 | 75 | 202 × 76.1 mm | 1.8 kg | PFA-005V |
| WFIWA-010 | welding end ø 21.3 mm | 2,500 | 150 | 240 × 76.1 mm | 2 kg | PFA-010V |
| WFIWA-018 | welding end ø 26.9 mm | 3,750 | 225 | 254 × 76.1 mm | 2 kg | PFA-018V |
| WFIWA-030 | welding end ø 33.7 mm | 5,250 | 315 | 280 × 88.9 mm | 3 kg | PFA-030V |
| WFIWA-047 | welding end ø 42.4 mm | 7,000 | 420 | 337 × 88.9 mm | 3 kg | PFA-047V |
| WFIWA-070 | welding end ø 48.3 mm | 10,000 | 600 | 376 × 114.3 mm | 4.3 kg | PFA-070V |
| WFIWA-094 | welding end ø 60.3 mm | 15,000 | 900 | 457 × 114.3 mm | 4.8 kg | PFA-094V |
| WFIWA-150 | welding end ø 60.3 mm | 21,000 | 1,260 | 583 × 114.3 mm | 5.3 kg | PFA-150V |
| WFIWA-175 | welding end ø 76.1 mm | 28,000 | 1,680 | 740 × 139.7 mm | 9 kg | PFA-175V |
| WFIWA-200 | welding end ø 88.9 mm | 40,000 | 2,400 | 1,004 × 139.7 mm | 10.8 kg | PFA-200V |
| WFIWA-240 | welding end ø 88.9 mm | 60,000 | 3,600 | 1,029 × 168.3 mm | 16.2 kg | PFA-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
Activated carbon is suitable where oil vapours and odours that a microfilter does not trap are also a problem. It works up to +45 °C and must not be used in an oil-saturated environment.
Class 1 for solid particles and oil only applies when a microfilter S is installed before it.
Where to place it
After the WFIWM fine pre-filter and the WFIWS microfilter — it is the last stage of the range.
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.
| WFIWA 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 PFA-010V for the WFIWA-010. The same element also fits the PFA-010, HPFA-010, WFITA-010, WFIFA-010 and WHFITA-010. Element working temperature +1.5 to +45 °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 WFIWA 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 A also comes in the PFA filters up to 14 bar, HPFA filters up to 50 bar, WFITA filters up to 14 bar, WFIFA filters up to 14 bar and WHFITA filters up to 50 bar. The elements are the same for all ranges.
Ventilek’s tip
Carbon only up to +45 °C. The housing withstands +150 °C, but the activated carbon element only +45 °C — warmer air must first be cooled before it.
- What does the activated carbon filter remove?
- Oil vapours, hydrocarbons and odours that the mechanical stages do not trap.
- Why must a microfilter be installed before it?
- Activated carbon must not work in an oil-saturated environment. The microfilter S traps oil droplets, and only with it does solid particle class 1 apply.
- What temperature does it withstand?
- From +1.5 to +45 °C.
- When should the element be replaced?
- At least once every 12 months.
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With a ø 17.2 mm pipe connection and a flow of 1,250 l/min at 7 bar, the WFIWA-005 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 21.3 mm pipe connection and a flow of 2,500 l/min at 7 bar, the WFIWA-010 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 26.9 mm pipe connection and a flow of 3,750 l/min at 7 bar, the WFIWA-018 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 33.7 mm pipe connection and a flow of 5,250 l/min at 7 bar, the WFIWA-030 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 42.4 mm pipe connection and a flow of 7,000 l/min at 7 bar, the WFIWA-047 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 48.3 mm pipe connection and a flow of 10,000 l/min at 7 bar, the WFIWA-070 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 60.3 mm pipe connection and a flow of 15,000 l/min at 7 bar, the WFIWA-094 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 60.3 mm pipe connection and a flow of 21,000 l/min at 7 bar, the WFIWA-150 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 76.1 mm pipe connection and a flow of 28,000 l/min at 7 bar, the WFIWA-175 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 88.9 mm pipe connection and a flow of 40,000 l/min at 7 bar, the WFIWA-200 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...
With a ø 88.9 mm pipe connection and a flow of 60,000 l/min at 7 bar, the WFIWA-240 activated carbon filter removes oil vapours, hydrocarbons and odours. Working pressure up to...