HFA high-pressure compressed air filters with activated carbon
The HFA activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours. Residual oil is below 0.005 mg/m³.
The HFA filter comes in 9 sizes with G 1/2" to G 3" threads and flows of 1,183 to 46,000 l/min at 7 bar; working pressure up to 50 bar. It is one of the stages of the HF high-pressure filters — the housing is the same for all stages, only the element differs.
HFA filters by size
The size determines the thread and the flow. Each size has its own spare element.
| HFA filters and spare elements by size | ||||
|---|---|---|---|---|
| Filter | Thread | l/min at 7 bar | Nm³/h at 7 bar | Spare element |
| HFA-007 | G 1/2" | 1,183 | 71 | HFA-007V |
| HFA-010 | G 3/4" | 1,867 | 112 | HFA-010V |
| HFA-018 | G 1" | 3,400 | 204 | HFA-018V |
| HFA-047 | G 1 1/2" | 4,700 | 282 | HFA-047V |
| HFA-070 | G 1 1/2" | 6,667 | 400 | HFA-070V |
| HFA-094 | G 2" | 8,233 | 494 | HFA-094V |
| HFA-150 | G 2" | 13,317 | 799 | HFA-150V |
| HFA-200 | G 3" | 36,000 | 2,160 | HFA-200V |
| HFA-240 | G 3" | 46,000 | 2,760 | HFA-240V |
The flows apply to a pressure of 7 bar and a temperature of +20 °C. You will find the dimensions and weight on the product page of each filter.
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When to use it
Activated carbon suits applications where oil vapours and odours, which 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.
Where to place it
Always after the HFS microfilter. Only with it does solid particle class 1 apply, and the carbon does not receive oil droplets.
Flow by pressure
The catalogue flows apply to a pressure of 7 bar and a temperature of +20 °C. At a higher pressure the filter passes more air: at 50 bar, 6.38 times as much as at 7 bar.
| HFA filter flow in l/min by pressure | ||||||
|---|---|---|---|---|---|---|
| Size (thread) | 5 bar | 7 bar | 10 bar | 16 bar | 30 bar | 50 bar |
| 007 (G 1/2") | 887 | 1,183 | 1,633 | 2,520 | 4,590 | 7,548 |
| 010 (G 3/4") | 1,400 | 1,867 | 2,576 | 3,977 | 7,244 | 11,911 |
| 018 (G 1") | 2,550 | 3,400 | 4,692 | 7,242 | 13,192 | 21,692 |
| 047 (G 1 1/2") | 3,525 | 4,700 | 6,486 | 10,011 | 18,236 | 29,986 |
| 070 (G 1 1/2") | 5,000 | 6,667 | 9,200 | 14,201 | 25,868 | 42,535 |
| 094 (G 2") | 6,175 | 8,233 | 11,362 | 17,536 | 31,944 | 52,527 |
| 150 (G 2") | 9,988 | 13,317 | 18,377 | 28,365 | 51,670 | 84,962 |
| 200 (G 3") | 27,000 | 36,000 | 49,680 | 76,680 | 139,680 | 229,680 |
| 240 (G 3") | 34,500 | 46,000 | 63,480 | 97,980 | 178,480 | 293,480 |
Element, drain and maintenance
The housing holds a single element, a different one for each size — for example HFA-007V for the HFA-007. Working temperature +1.5 to +45 °C, pressure up to 50 bar.
The filter is supplied without a condensate drain. For pressures up to 50 bar, the AOK 50B and AOK 50SS float drains are suitable; they work reliably from 10 bar.
Replace the activated carbon element by time, every 6 months.
Accessories for HFA filters
MDHI 50 differential pressure gauge
Shows the pressure drop of the element; it is mounted on the filter head.
Ventilek’s tip
Carbon is replaced by the calendar. Replace the activated carbon element every 6 months — unlike the other stages, it is not replaced according to the pressure drop.
- What does the activated carbon filter remove?
- Residual oil, oil vapours, hydrocarbons and odours. Residual oil is below 0.005 mg/m³.
- Why must a microfilter go before it?
- Activated carbon must not work in an oil-saturated environment. The HFS microfilter traps oil droplets, and only with it does solid particle class 1 apply.
- How often should the element be replaced?
- Every 6 months.
- What temperature can it withstand?
- From +1.5 to +45 °C.
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List of products
With a G 1/2" thread and a flow of 1,183 l/min at 7 bar, the HFA-007 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
With a G 3/4" thread and a flow of 1,867 l/min at 7 bar, the HFA-010 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
With a G 1" thread and a flow of 3,400 l/min at 7 bar, the HFA-018 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
With a G 1 1/2" thread and a flow of 4,700 l/min at 7 bar, the HFA-047 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
With a G 1 1/2" thread and a flow of 6,667 l/min at 7 bar, the HFA-070 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
With a G 2" thread and a flow of 8,233 l/min at 7 bar, the HFA-094 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
With a G 2" thread and a flow of 13,317 l/min at 7 bar, the HFA-150 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
With a G 3" thread and a flow of 36,000 l/min at 7 bar, the HFA-200 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
With a G 3" thread and a flow of 46,000 l/min at 7 bar, the HFA-240 activated carbon filter removes residual oil, oil vapours, hydrocarbons and odours; residual oil is below...
Spare element HFA-007V for the HFA-007 activated carbon filter with a G 1/2" thread. Recommended replacement every 6 months.
Spare element HFA-010V for the HFA-010 activated carbon filter with a G 3/4" thread. Recommended replacement every 6 months.
Spare element HFA-018V for the HFA-018 activated carbon filter with a G 1" thread. Recommended replacement every 6 months.
Spare element HFA-047V for the HFA-047 activated carbon filter with a G 1 1/2" thread. Recommended replacement every 6 months.
Spare element HFA-070V for the HFA-070 activated carbon filter with a G 1 1/2" thread. Recommended replacement every 6 months.
Spare element HFA-094V for the HFA-094 activated carbon filter with a G 2" thread. Recommended replacement every 6 months.
Spare element HFA-150V for the HFA-150 activated carbon filter with a G 2" thread. Recommended replacement every 6 months.
Spare element HFA-200V for the HFA-200 activated carbon filter with a G 3" thread. Recommended replacement every 6 months.
Spare element HFA-240V for the HFA-240 activated carbon filter with a G 3" thread. Recommended replacement every 6 months.