BPS
The Stauff BPS Bypass Filters are specifically designed for mobile applications, allowing direct connection to the high-pressure side of the system (up to 420 bar). Thanks to the integrated, pressure-compensated flow control valve, they ensure consistent filtration regardless of pressure variations in the main circuit. Available in single (BPS-1A) or double (BPS-2A) housing configurations, they provide flow rates up to 4.2 l/min and use SRM series filter elements for the removal of particulate and water contamination.
The BPS series by :contentReference[oaicite:0]{index=0} offers an advanced bypass filtration solution, ideal for both original equipment (OEM) installations and retrofitting on existing systems. These filters are engineered to draw fluid directly from the high-pressure side of the hydraulic or transmission system, purify it, and return it to the tank—ensuring continuous cleanliness and extending component service life.
The core of the BPS system is the integrated flow control valve. This pressure-compensated valve manages fluid intake from the main circuit, which can operate at system pressures between 12 and 420 bar (180…6200 PSI). Regardless of pressure fluctuations in the main system, the valve ensures a constant oil flow through the filter element, optimizing contaminant removal efficiency without significantly drawing power from the system.
Manufactured with an anodized aluminum housing, BPS filters are lightweight and corrosion-resistant, making them ideal for mobile applications. The range is available in two main models:
BPS units are highly versatile and operate effectively across a wide range of conditions:
The filters use replacement elements from the SRM-30 series, offering a wide selection of filter media for every requirement:
| Feature | Value |
|---|---|
| Filter Type | High-Pressure Bypass Filter |
| Permissible System Pressure | 12 … 420 bar (180 … 6200 PSI) |
| Models & Max Flow Rate | BPS-1A (2.1 l/min) / BPS-2A (4.2 l/min) |
| Control Valve | Integrated, pressure-compensated |
| Housing Material | Anodized aluminum |
| Permissible Viscosity | 20 … 160 cSt |
| Operating Temperature | Up to +80°C |
| Connections | IN: G 1/4 (BSP) / OUT: G 1/2 (BSP) |
| Compatible Filter Elements | SRM-30 series (Cellulose, Glass Fiber, Water-Absorbing) |
| Seals | NBR (standard), FKM (optional) |