SPFIW1 welded stainless steel pre-filters up to 14 bar
The SPFIW1 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 SPFIW1 filter comes in 12 sizes (G 1/4" to 3") with flows of 1,250 to 60,000 l/min at 7 bar; working pressure up to 14 bar. It is one of the twelve stages of the SPF filters — the housing is the same for all stages, only the element differs.
SPFIW1 filters by size
The size determines the connection and the flow. Each size has its own PF range spare element.
| SPFIW1 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 |
| SPFIW1-005 | G 1/4" | 1,250 | 75 | 225 × 76.1 mm | 1.9 kg | PFIW1-005V |
| SPFIW1-007 | G 3/8" | 1,750 | 105 | 251 × 76.1 mm | 2 kg | PFIW1-007V |
| SPFIW1-010 | G 1/2" | 2,500 | 150 | 258 × 76.1 mm | 2.1 kg | PFIW1-010V |
| SPFIW1-018 | G 3/4" | 3,750 | 225 | 282 × 76.1 mm | 2.3 kg | PFIW1-018V |
| SPFIW1-030 | G 1" | 5,250 | 315 | 299 × 88.9 mm | 3.1 kg | PFIW1-030V |
| SPFIW1-047 | G 1 1/4" | 7,000 | 420 | 359 × 88.9 mm | 3.4 kg | PFIW1-047V |
| SPFIW1-070 | G 1 1/2" | 10,000 | 600 | 395 × 114.3 mm | 4.7 kg | PFIW1-070V |
| SPFIW1-094 | G 2" | 15,000 | 900 | 464 × 114.3 mm | 5.3 kg | PFIW1-094V |
| SPFIW1-150 | G 2" | 21,000 | 1,260 | 592 × 114.3 mm | 6 kg | PFIW1-150V |
| SPFIW1-175 | G 2 1/2" | 28,000 | 1,680 | 743 × 139.7 mm | 11.4 kg | PFIW1-175V |
| SPFIW1-200 | G 3" | 40,000 | 2,400 | 995 × 139.7 mm | 12 kg | PFIW1-200V |
| SPFIW1-240 | G 3" | 60,000 | 3,600 | 1,029 × 168.3 mm | 18 kg | PFIW1-240V |
The flows apply to a pressure of 7 bar and a temperature of +20 °C. Dimensions and weights according to the manufacturer; 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 SPFN5 basic filter or the SPFP fibre pre-filter, before the SPFM fine pre-filter — instead of the SPFI1 sintered pre-filter.
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.
| SPFIW1 filter flow in l/min by pressure | ||||
|---|---|---|---|---|
| Size (connection) | 4 bar | 7 bar | 10 bar | 14 bar |
| 005 (G 1/4") | 788 | 1,250 | 1,725 | 2,350 |
| 007 (G 3/8") | 1,103 | 1,750 | 2,415 | 3,290 |
| 010 (G 1/2") | 1,575 | 2,500 | 3,450 | 4,700 |
| 018 (G 3/4") | 2,363 | 3,750 | 5,175 | 7,050 |
| 030 (G 1") | 3,308 | 5,250 | 7,245 | 9,870 |
| 047 (G 1 1/4") | 4,410 | 7,000 | 9,660 | 13,160 |
| 070 (G 1 1/2") | 6,300 | 10,000 | 13,800 | 18,800 |
| 094 (G 2") | 9,450 | 15,000 | 20,700 | 28,200 |
| 150 (G 2") | 13,230 | 21,000 | 28,980 | 39,480 |
| 175 (G 2 1/2") | 17,640 | 28,000 | 38,640 | 52,640 |
| 200 (G 3") | 25,200 | 40,000 | 55,200 | 75,200 |
| 240 (G 3") | 37,800 | 60,000 | 82,800 | 112,800 |
Element and maintenance
A PF range element is fitted in the housing — for example, the PFIW1-010V for the SPFIW1-010. The same element also fits the PF, HPF, WFIT, WFIF, WFIW and WHFIT process filters of the same size. The working temperature of the element is +1.5 to +150 °C.
The filter is supplied with an element, without a condensate drain. You will find all elements among the PF range spare elements.
Replace the element at least once every 12 months. Once a year, also check the housing for visible damage.
The same stage in other ranges
Stage IW1 also comes in process filters: PFIW1 up to 14 bar, HPFIW1 up to 50 bar, WFITIW1 up to 14 bar, WFIFIW1 up to 14 bar, WFIWIW1 up to 14 bar and WHFITIW1 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 SPFIW1 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 SPFI1?
- 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 1/4" connection and a flow of 1,250 l/min at 7 bar, the SPFIW1-005 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 3/8" connection and a flow of 1,750 l/min at 7 bar, the SPFIW1-007 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 1/2" connection and a flow of 2,500 l/min at 7 bar, the SPFIW1-010 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 3/4" connection and a flow of 3,750 l/min at 7 bar, the SPFIW1-018 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 1" connection and a flow of 5,250 l/min at 7 bar, the SPFIW1-030 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 1 1/4" connection and a flow of 7,000 l/min at 7 bar, the SPFIW1-047 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 1 1/2" connection and a flow of 10,000 l/min at 7 bar, the SPFIW1-070 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 2" connection and a flow of 15,000 l/min at 7 bar, the SPFIW1-094 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 2" connection and a flow of 21,000 l/min at 7 bar, the SPFIW1-150 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 2 1/2" connection and a flow of 28,000 l/min at 7 bar, the SPFIW1-175 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 3" connection and a flow of 40,000 l/min at 7 bar, the SPFIW1-200 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...
With a G 3" connection and a flow of 60,000 l/min at 7 bar, the SPFIW1-240 welded pre-filter traps solid particles larger than 1 µm. Working pressure up to 14 bar, polished...