The Guardian Air spark arrestor is a mesh fitted over the pre-filter in the filter chamber of the Böhler Welding Guardian Air blower unit. It protects the filter from welding sparks; the filter cover closes over it.
Technical specifications
| Catalogue number | 86704 |
|---|---|
| Brand | Böhler Welding |
| Compatible with | Guardian Air (86692, 86668) |
| Type | spark arrestor mesh |
| Function | protects the filter from sparks |
| Fitting | over the pre-filter, under the cover |
| Unit | 1 pc per unit |
| Pack quantity | 1 pc |
Who it is for
For Guardian Air users with a damaged or lost spark arrestor. The spark arrestor comes with the Guardian Air kit; this item is the spare part, 1 pc.
Key features
- Mesh fitted over the pre-filter, under the filter cover.
- Protects the P R SL filter from welding sparks.
- Tool-free change: open the cover by hand from the right side of the unit.
- 1 pc per unit.
Fitting and inspection of the Guardian Air spark arrestor
With the cover open, fit the pre-filter over the main filter, then the spark arrestor on top, and close the cover until it snaps into place. Before work, check the mesh for burn-through or deformation and replace it if damaged. Clean it with a cloth moistened with lukewarm water and soap, without solvents or abrasives.
Compatible with
The Guardian Air unit and the kits built on it:
- Böhler Welding Guardian Air PAPR blower unit, complete kit with filter
- Böhler Welding Guardian Air motor unit with filter cover, PAPR blower without filters
- Böhler Welding Guardian 50M Air Kit, welding helmet with Guardian Air PAPR
- Böhler Welding Guardian 50FM Air Kit, flip-up welding helmet with Guardian Air PAPR
- Böhler Welding Big Vision Air Kit Guardian Air, grinding visor with Guardian Air PAPR
For Evolution Air: Böhler Welding spark arrestor Evolution Air (2 pcs).
Consumables and spare parts
- Böhler Welding filter cover Guardian Air
- Böhler Welding pre-filter Guardian Air (10 pcs)
- Böhler Welding P R SL particle filter Guardian Air (4 pcs)
- Böhler Welding odour pre-filter Guardian Air (5 pcs)
All PAPR parts: Filters and powered air parts.
Documents
- Guardian Air instruction manual (PDF, multilingual)
- Guardian 50M/50FM Air Kit fact sheet with Guardian Air spare parts (PDF, English)
- PPE & accessories catalogue 2023/24 (PDF, English)
Frequently asked questions
Can I work without the spark arrestor?
The manufacturer provides the spark arrestor and cover to protect the filter from welding sparks, and the manual says to replace damaged parts before work. Work with the spark arrestor fitted.
Does the spark arrestor replace the pre-filter?
No. The pre-filter stops larger particles and the spark arrestor protects the filter from sparks; you fit both.
Does it fit Evolution Air?
No, Evolution Air uses round spark arrestors: Böhler Welding spark arrestor Evolution Air (2 pcs).




