WFIWC stainless steel cyclone separators up to 14 bar

The WFIWC cyclone separator is the first stage of the WFIW range. Instead of a filter element, its stainless steel housing holds a cyclone element that separates condensate droplets — water and oil droplets — from the air before they reach the elements after it.
The WFIWC separator 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, but instead of an element it has a cyclone element.
WFIWC separators by size
The size determines the connection and the flow. Each size has its own spare cyclone element.
| WFIWC separators and spare cyclone elements by size | ||||||
|---|---|---|---|---|---|---|
| Separator | Connection | l/min at 7 bar | Nm³/h at 7 bar | Height A × diameter C | Weight | Spare cyclone element |
| WFIWC-005 | welding end ø 17.2 mm | 1,250 | 75 | 202 × 76.1 mm | 1.8 kg | WFC-005V |
| WFIWC-010 | welding end ø 21.3 mm | 2,500 | 150 | 240 × 76.1 mm | 2 kg | WFC-010V |
| WFIWC-018 | welding end ø 26.9 mm | 3,750 | 225 | 254 × 76.1 mm | 2 kg | WFC-018V |
| WFIWC-030 | welding end ø 33.7 mm | 5,250 | 315 | 280 × 88.9 mm | 3 kg | WFC-030V |
| WFIWC-047 | welding end ø 42.4 mm | 7,000 | 420 | 337 × 88.9 mm | 3 kg | WFC-047V |
| WFIWC-070 | welding end ø 48.3 mm | 10,000 | 600 | 376 × 114.3 mm | 4.3 kg | WFC-070V |
| WFIWC-094 | welding end ø 60.3 mm | 15,000 | 900 | 457 × 114.3 mm | 4.8 kg | WFC-094V |
| WFIWC-150 | welding end ø 60.3 mm | 21,000 | 1,260 | 583 × 114.3 mm | 5.3 kg | WFC-150V |
| WFIWC-175 | welding end ø 76.1 mm | 28,000 | 1,680 | 740 × 139.7 mm | 9 kg | WFC-175V |
| WFIWC-200 | welding end ø 88.9 mm | 40,000 | 2,400 | 1,004 × 139.7 mm | 10.8 kg | WFC-200V |
| WFIWC-240 | welding end ø 88.9 mm | 60,000 | 3,600 | 1,029 × 168.3 mm | 16.2 kg | WFC-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 separator.
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When to use it
The cyclone separator is suitable at the start of the filtration where condensate droplets enter the air line. The separated condensate is drained at the bottom of the housing.
It does not trap fine solid particles or oil aerosol; the manufacturer does not state an ISO 8573-1 class for it. The cyclone element withstands +120 °C.
Where to place it

At the start of the filtration, before the WFIWN25 coarse filter or the WFIWI20 sintered pre-filter: the elements after it then do not get flooded with condensate as quickly.
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.
| WFIWC separator 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 |
Cyclone element, condensate drainage and maintenance

A cyclone element is fitted in the housing — for example, the WFC-010V for the WFIWC-010. The same cyclone element also fits the WFITC-010, WFIFC-010 and WHFITC-010. The cyclone element withstands +120 °C.
The separator is supplied with a cyclone 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.
Once a year, check the housing for visible damage.
Accessories for WFIWC separators

MDHI 50-K gauge
Differential pressure gauge with connecting tubes; it shows how clogged the element is.
The same stage in other ranges
Stage C also comes in the WFITC separators up to 14 bar, WFIFC separators up to 14 bar and WHFITC separators up to 50 bar. The cyclone elements are the same for all ranges.
Ventilek’s tip
Condensate first. When water droplets enter the air line, put the cyclone separator C at the start. The elements after it then do not get flooded as quickly.
- Does the WFIWC separator have a filter element?
- No. Instead of an element, it has a cyclone element that separates condensate droplets from the air.
- Does it also trap fine particles?
- No. Solid particles are handled by the meshes and pre-filters, oil aerosol by the fine pre-filter M.
- What temperature does the cyclone element withstand?
- Up to +120 °C.
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 WFIWC-005 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 21.3 mm pipe connection and a flow of 2,500 l/min at 7 bar, the WFIWC-010 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 26.9 mm pipe connection and a flow of 3,750 l/min at 7 bar, the WFIWC-018 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 33.7 mm pipe connection and a flow of 5,250 l/min at 7 bar, the WFIWC-030 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 42.4 mm pipe connection and a flow of 7,000 l/min at 7 bar, the WFIWC-047 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 48.3 mm pipe connection and a flow of 10,000 l/min at 7 bar, the WFIWC-070 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 60.3 mm pipe connection and a flow of 15,000 l/min at 7 bar, the WFIWC-094 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 60.3 mm pipe connection and a flow of 21,000 l/min at 7 bar, the WFIWC-150 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 76.1 mm pipe connection and a flow of 28,000 l/min at 7 bar, the WFIWC-175 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 88.9 mm pipe connection and a flow of 40,000 l/min at 7 bar, the WFIWC-200 cyclone separator removes condensate droplets — water and oil droplets — from the air before...
With a ø 88.9 mm pipe connection and a flow of 60,000 l/min at 7 bar, the WFIWC-240 cyclone separator removes condensate droplets — water and oil droplets — from the air before...

