SFA 
The Stauff SFA Pressure Filters are essential components for in-line assembly in medium-pressure hydraulic systems. Designed to handle operating pressures up to 160 bar, they offer superior versatility thanks to multiple integrated valve configurations, including bypass, reverse flow, and check valves. Built from die-cast aluminum, they ensure durability and ease of maintenance, supporting flow rates of up to 240 l/min and multiple connection standards such as BSP, NPT, and SAE flanges.
The Stauff SFA Pressure Filter series is specifically designed for in-line installation, with threaded mounting holes on the top of the filter head for secure and simplified assembly. These filters are ideal for hydraulic circuits operating with mineral oils, ensuring high contaminant removal efficiency when used with Stauff SE series filter elements.
The robust design features a die-cast aluminum filter head and an aluminum bowl, combining light weight with mechanical strength. Pressure specifications vary by filter size:
A distinctive feature of the SFA series is its flexibility in flow management, thanks to several valve options integrated into the filter head:
The filters support SE series filter elements with inorganic glass fiber, stainless steel fiber, or wire mesh media, covering filtration ratings from 3 µm to 200 µm. Connection options are extensive and include BSP, NPT, SAE O-ring, and SAE 3000 PSI flanges (Code 61), accommodating nominal flow rates ranging from 60 l/min (SFA-014) up to 240 l/min (SFA-070).
To facilitate preventive maintenance, the filters can be equipped with visual, electrical, or visual-electrical clogging indicators, set to activate at a differential pressure of 5 bar, anticipating the opening of the bypass valve.
| Feature | Value / Detail |
|---|---|
| Max Operating Pressure (SFA-014/030) | 160 bar / 2320 PSI |
| Max Operating Pressure (SFA-045/070) | 150 bar / 2175 PSI |
| Minimum Burst Pressure | 480 bar / 6960 PSI |
| Nominal Flow Rate | From 60 l/min to 240 l/min |
| Head Material | Die-cast aluminum |
| Bowl Material | Aluminum |
| Temperature Range | −10°C … +100°C |
| Valve Options | Bypass, Reverse flow, Check valve, Multi-function |
| Standard Bypass Setting | 6 bar +0.5 bar |
| Available Connections | BSP, NPT, SAE O-ring, SAE 3000 PSI flanges |
| Clogging Indicators | Visual, Electrical, Visual-Electrical (5 bar setting) |