The Evolution Air pre-filter 40 pcs is a stock pack of discs for the Böhler Welding powered air-purifying respirator, fitted over the P R SL main filters. The unit has two filter seats, so 40 pcs cover 20 changes, twice as many as the smaller pack.
Technical specifications
| Catalogue number | 57099 |
|---|---|
| Brand | Böhler Welding |
| Compatible with | Evolution Air (77008, 77011) |
| Type | pre-filter (disc) |
| Function | stops larger particles, extends main filter life |
| Fitting | over the main filter, under the filter cover |
| Replacement | when the warning alarm sounds (check or replace) |
| Unit | 2 discs per change |
| Pack quantity | 40 pcs (bag) |
Who it is for
For companies and teams running several Evolution Air units or working in heavy dust, where pre-filters wear out quickly. One pack of 40 pcs replaces two packs of 20 pcs and lasts longer; the smaller pack is the Böhler Welding pre-filter Evolution Air (20 pcs).
Key features
- 40 discs per bag, that is 20 changes for the twin-filter unit.
- The disc goes over the P R SL main filter, under the spark arrestor and filter cover.
- It stops larger particles, so the P R SL filter clogs more slowly.
- Tool-free change with the filter cover removed.
Step-by-step replacement
When the unit raises the warning alarm, remove the filter cover and check the disc; replace a dirty one with a new disc that must cover the whole main filter. If the airflow is still too low, the main filter is the cause and you replace the P R SL filters. Used discs are not cleaned but thrown away.
Compatible with
The Evolution Air unit and the kits built on it:
- Böhler Welding Evolution Air PAPR blower unit, complete kit with filters
- Böhler Welding Evolution Air motor unit, PAPR blower without filters
- Böhler Welding Guardian 62 Air Kit, welding helmet with Evolution Air PAPR
- Böhler Welding Guardian 62F Air Kit, flip-up welding helmet with Evolution Air PAPR
- Böhler Welding Evolution Vision 65F Air Kit, flip-up welding helmet with Evolution Air PAPR
- Böhler Welding Evolution Vision 65FM Air Kit, auto-shade welding helmet with Evolution Air PAPR
- Böhler Welding Evolution V80 Air Kit, welding helmet with Evolution Air PAPR
- Böhler Welding Evolution V80M Air Kit, auto-shade welding helmet with Evolution Air PAPR
- Böhler Welding Big Vision Air Kit Evolution Air, grinding visor with Evolution Air PAPR
Guardian Air uses a different pre-filter: Böhler Welding pre-filter Guardian Air (10 pcs).
Consumables and spare parts
- Böhler Welding pre-filter Evolution Air (20 pcs)
- Böhler Welding odour pre-filter Evolution Air (6 pcs)
- Böhler Welding P R SL particle filter Evolution Air (4 pcs)
- Böhler Welding spark arrestor Evolution Air (2 pcs)
- Böhler Welding filter cover Evolution Air (2 pcs)
All PAPR parts: Filters and powered air parts.
Documents
- Evolution Air instruction manual (PDF, multilingual)
- Evolution V80 Air Kit fact sheet with Evolution Air spare parts (PDF, English)
- PPE & accessories catalogue 2023/24 (PDF, English)
Frequently asked questions
How many changes does the Evolution Air pre-filter 40 pcs pack cover?
20, as each change takes 2 discs, one per main filter.
How does it differ from the 20-piece pack?
Only in the number of discs: the Böhler Welding pre-filter Evolution Air (20 pcs) holds 20 pcs, that is 10 changes.
Does the pre-filter protect against gases?
No. It stops larger particles ahead of the P R SL filter; only the Böhler Welding A1B1E1 P R SL gas filter Evolution Air (2 pcs) protects against gases and vapours.
