HFO2 high-pressure oxygen filters up to 50 bar

For oxygen Omega Air HF O2 high-pressure oxygen filter and the meshes of the R, M and S stage elements

Omega Air HFO2 high-pressure oxygen filters were developed by the manufacturer specifically for removing solid particles from compressed oxygen. They have a cast aluminium housing and a working pressure of up to 50 bar.

9 sizes with 1/2" to 3" female pipe threads, flow of 1,183 to 46,000 l/min at 7 bar, working temperature +1.5 to +65 °C. The three filtration stages R, M and S differ in the element. The filter housing is supplied with the element, without a condensate drain.

3 stagesR 1 µm, M 0.1 µm, S 0.01 µm

9sizes 1/2"–3"

50 barworking pressure

46,000 l/minhighest flow at 7 bar

Sizes and codes

The codes lead to the pages of the filters and their spare elements.

Size	Connection	Flow at 7 bar	R	M	S	Element R	Element M	Element S
007	1/2"	1,183 l/min	HFO2R-007	HFO2M-007	HFO2S-007	HFO2R-007V	HFO2M-007V	HFO2S-007V
010	3/4"	1,867 l/min	HFO2R-010	HFO2M-010	HFO2S-010	HFO2R-010V	HFO2M-010V	HFO2S-010V
018	1"	3,400 l/min	HFO2R-018	HFO2M-018	HFO2S-018	HFO2R-018V	HFO2M-018V	HFO2S-018V
047	1 1/2"	4,700 l/min	HFO2R-047	HFO2M-047	HFO2S-047	HFO2R-047V	HFO2M-047V	HFO2S-047V
070	1 1/2"	6,667 l/min	HFO2R-070	HFO2M-070	HFO2S-070	HFO2R-070V	HFO2M-070V	HFO2S-070V
094	2"	8,233 l/min	HFO2R-094	HFO2M-094	HFO2S-094	HFO2R-094V	HFO2M-094V	HFO2S-094V
150	2"	13,317 l/min	HFO2R-150	HFO2M-150	HFO2S-150	HFO2R-150V	HFO2M-150V	HFO2S-150V
200	3"	36,000 l/min	HFO2R-200	HFO2M-200	HFO2S-200	HFO2R-200V	HFO2M-200V	HFO2S-200V
240	3"	46,000 l/min	HFO2R-240	HFO2M-240	HFO2S-240	HFO2R-240V	HFO2M-240V	HFO2S-240V

#showmore#

How to choose the stage

Filtration stages in the direction of flow: R, M, S — In the direction of flow: R dust filter 1 µm, M fine pre-filter 0.1 µm, S microfilter 0.01 µm.

The stages are arranged in the direction of flow, starting with the coarsest: the dust filter R traps solid particles down to 1 µm, the fine pre-filter M down to 0.1 µm and the microfilter S down to 0.01 µm. Each stage protects the one after it. The fine pre-filter M goes before the microfilter S — it does not replace the microfilter, but it extends its life.

How to choose the size

By flow in the table. In the HFO2 range, the number in the code indicates the size, not the flow: for example, the HFO2R-150 passes 799 Nm³/h, i.e. 13,317 l/min.

The flows apply at an ambient temperature of +20 °C, an inlet temperature of +35 °C and a pressure of 7 bar. For other conditions, the flow is converted using a correction factor — contact us.

Condensate drain

The HFO2 filter is supplied without a condensate drain — it is ordered separately. For the HFO2 range, the manufacturer lists manual drainage with a ball valve at the bottom of the bowl; it does not list any other drain for oxygen filters.

Spare elements

The element determines the filtration stage. The spare element for each size and stage is in the table above, in the Element R, M and S columns.

Ventilek’s tip

The fine pre-filter M goes before the microfilter S. The 0.01 µm microfilter traps the finest particles, but coarser ones would quickly clog it. Place the fine pre-filter M and the dust filter R of the same size before it.

Which filtration stage do I need?: It depends on how fine the particles are that the filter needs to trap: dust filter R down to 1 µm, fine pre-filter M down to 0.1 µm, microfilter S down to 0.01 µm. The fine pre-filter M goes before the microfilter S.
How do I choose the size?: By the flow at 7 bar in the table. The number in the HFO2 code does not indicate the flow, for example HFO2R-150 = 799 Nm³/h.
What is included in the supply?: The filter housing and the filter element. The condensate drain is ordered separately — for HFO2, the manufacturer lists a ball valve.
When should I choose HFO2 instead of AAFO2?: When the pressure in the line is above 16 bar: HFO2 works up to 50 bar, AAFO2 up to 16 bar.

Data on sizes, flows and weights are based on the technical documentation for the Omega Air AAFO2 and HFO2 ranges. Flows apply at 7 bar, an ambient temperature of +20 °C and an inlet temperature of +35 °C.

Both ranges are compared on the Oxygen filters page. For pressures up to 16 bar, there is the AAFO2 range with sizes from 1/8". For oxygen lines, we also offer pressure vessels for oxygen and GOX pressure hoses for oxygen.