HPFIW1 welded stainless steel pre-filters up to 50 bar
The HPFIW1 welded pre-filter has an element made of sintered stainless steel 1.4404 in a welded design and traps solid particles larger than 1 µm. It withstands up to +150 °C.
The HPFIW1 filter comes in 8 sizes (G 1/2" to 3") with flows of 2,500 to 40,000 l/min at 7 bar; working pressure up to 50 bar. It is one of the stages of the HPF filters — the housing is the same for all stages, only the element differs.
HPFIW1 filters by size
The size determines the connection and the flow. Each size has its own PF range spare element.
| HPFIW1 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 |
| HPFIW1-010 | G 1/2" | 2,500 | 150 | 243 × 76.1 mm | 2.5 kg | PFIW1-010V |
| HPFIW1-018 | G 3/4" | 3,750 | 225 | 267 × 76.1 mm | 2.7 kg | PFIW1-018V |
| HPFIW1-030 | G 1" | 5,250 | 315 | 286 × 88.9 mm | 3.4 kg | PFIW1-030V |
| HPFIW1-047 | G 1 1/4" | 7,000 | 420 | 355 × 88.9 mm | 3.9 kg | PFIW1-047V |
| HPFIW1-070 | G 1 1/2" | 10,000 | 600 | 400 × 114.3 mm | 5.6 kg | PFIW1-070V |
| HPFIW1-094 | G 2" | 15,000 | 900 | 481 × 114.3 mm | 9.2 kg | PFIW1-094V |
| HPFIW1-150 | G 2" | 21,000 | 1,260 | 607 × 114.3 mm | 10.9 kg | PFIW1-150V |
| HPFIW1-200 | G 3" | 40,000 | 2,400 | 1,018 × 139.7 mm | 11.5 kg | PFIW1-200V |
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 welded pre-filter IW1 is the second design of the 1 µm stage alongside the sintered pre-filter I1 and goes in the same place in the filtration. It does not trap oil; the manufacturer does not state an ISO 8573-1 class for it.
Where to place it
After the HPFN5 basic filter or the HPFP fibre pre-filter, before the HPFM fine pre-filter — instead of the HPFI1 sintered pre-filter.
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 — 6.38 times as much at 50 bar.
| HPFIW1 filter flow in l/min by pressure | ||||
|---|---|---|---|---|
| Size (connection) | 7 bar | 16 bar | 30 bar | 50 bar |
| 010 (G 1/2") | 2,500 | 5,325 | 9,700 | 15,950 |
| 018 (G 3/4") | 3,750 | 7,988 | 14,550 | 23,925 |
| 030 (G 1") | 5,250 | 11,183 | 20,370 | 33,495 |
| 047 (G 1 1/4") | 7,000 | 14,910 | 27,160 | 44,660 |
| 070 (G 1 1/2") | 10,000 | 21,300 | 38,800 | 63,800 |
| 094 (G 2") | 15,000 | 31,950 | 58,200 | 95,700 |
| 150 (G 2") | 21,000 | 44,730 | 81,480 | 133,980 |
| 200 (G 3") | 40,000 | 85,200 | 155,200 | 255,200 |
Element, condensate drainage and maintenance
A PF range element is fitted in the housing — for example, the PFIW1-010V for the HPFIW1-010. The same element also fits the PFIW1-010, WFITIW1-010, WFIFIW1-010, WFIWIW1-010 and WHFITIW1-010. Element working temperature +1.5 to +150 °C.
The filter is supplied with an element, without a condensate drain. For HPF filters, the manufacturer offers the AOK50SS stainless steel float drain up to 50 bar, recommended from 10 bar, or the TD420M timed drain with a G 1/4" thread. The drain outlet in the bottom has a G 1/4" thread.
Replace the element at least once every 12 months. Once a year, also check the housing for visible damage.
Accessories for HPFIW1 filters
The same stage in other ranges
Stage IW1 also comes in the PFIW1 filters up to 14 bar, WFITIW1 filters up to 14 bar, WFIFIW1 filters up to 14 bar, WFIWIW1 filters up to 14 bar and WHFITIW1 filters up to 50 bar. The elements are the same for all ranges.
Ventilek’s tip
Two designs of the 1 µm stage. The sintered pre-filter I1 and the welded IW1 have the same filtration rating and temperature up to +150 °C and go in the same place in the filtration.
- What filtration rating does the HPFIW1 pre-filter have?
- The element traps particles larger than 1 µm. The manufacturer does not state an ISO 8573-1 class for it.
- How does it differ from the HPFI1?
- Both elements are made of sintered stainless steel 1.4404 with a filtration rating of 1 µm; the IW1 element is of a welded design.
- When should the element be replaced?
- At least once every 12 months.
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With a G 1/2" connection and a flow of 2,500 l/min at 7 bar, the HPFIW1-010 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 50 bar, stainless...
With a G 3/4" connection and a flow of 3,750 l/min at 7 bar, the HPFIW1-018 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 50 bar, stainless...
With a G 1" connection and a flow of 5,250 l/min at 7 bar, the HPFIW1-030 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 50 bar, stainless...
With a G 1 1/4" connection and a flow of 7,000 l/min at 7 bar, the HPFIW1-047 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 50 bar, stainless...
With a G 1 1/2" connection and a flow of 10,000 l/min at 7 bar, the HPFIW1-070 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 50 bar, stainless...
With a G 2" connection and a flow of 15,000 l/min at 7 bar, the HPFIW1-094 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 50 bar, stainless...
With a G 2" connection and a flow of 21,000 l/min at 7 bar, the HPFIW1-150 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 50 bar, stainless...
With a G 3" connection and a flow of 40,000 l/min at 7 bar, the HPFIW1-200 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 50 bar, stainless...