Technical Data
Hydroline FSB Flange & Weld Mount Breather
The FSB series offers a versatile range of high-performance hydraulic tank breathers in flange mount, weld mount, and push-on configurations. A chrome-plated steel cap vents underneath to keep contaminants out, with a rugged cast aluminium housing on BM models. Standard filtration is 40 microns, with 10-micron and 3-micron options available for cleaner-system requirements.
Air flows up to 750 LPM (25 CFM), covering a wide range of reservoir sizes and applications.
Key specifications:
- Cap: Chrome-plated steel (alternate: black powder coated)
- Filtration: 40 micron standard; 10 micron and 3 micron available
- Max air flow: 750 LPM (25 CFM)
- Housing: Cast aluminium (BM models); standard steel
- Metal strainer: Standard supply
- Hardware: Gaskets and 10-32 screws included
- Mounting options: Flange (FSB), weld (FSBW), push-on (PB), side mount (BM)
- High neck versions: 1.5" (HN1) and 3" (HN3) available
- Optional: Splash guard, locking tab, pressurised (5 psi) version, dip stick
| Model | Description | Max Air Flow | Filtration Rating | Dim A | Dim B | Dim C | Weight |
| FSB-05 | Flange Mount Breather | 150 LPM | 40 micron | 46mm | 46mm | 52mm | 0.10 kg |
| FSB-05-10 | Flange Mount Breather, 10 micron | 90 LPM | 10 micron | 46mm | 46mm | 52mm | 0.10 kg |
| FSB-25 | Flange Mount Breather | 720 LPM | 40 micron | 77mm | 77mm | 52mm | 0.25 kg |
| PB-25 | Push-On Type Breather | 400 LPM | 40 micron | 77mm | 77mm | 52mm | 0.25 kg |
| FSB-25-10 | Flange Mount Breather, 10 micron | 720 LPM | 10 micron | 77mm | 77mm | 52mm | 0.25 kg |
| FSB-25-HN1 | Flange Mount, High Neck 1.5" | 720 LPM | 40 micron | 77mm | 77mm | 73mm | 0.35 kg |
| FSBW-25-HN1 | Weld Type, High Neck 1.5" | 720 LPM | 40 micron | 77mm | 77mm | 73mm | 0.35 kg |
| FSB-25-HN3 | Flange Mount, High Neck 3" | 720 LPM | 40 micron | 77mm | 77mm | 110mm | 0.40 kg |
| FSBW-25-HN3 | Weld Type, High Neck 3" | 720 LPM | 40 micron | 77mm | 77mm | 110mm | 0.40 kg |
| FSBW-25 | Weld Type Breather | 720 LPM | 40 micron | 77mm | 77mm | 52mm | 0.25 kg |






