MaHLE / Filtration Group – PI 3405‑13 NBR – Medium‑Pressure Hydraulic Filter

The PI 3405‑13 NBR is a medium-pressure hydraulic filter housing (part of the PI 340 series) designed for critical fluid cleanliness in industrial hydraulic systems. With a rugged steel or GGG cast body and NBR sealing, it withstands pressures up to 350 bar and temperatures ranging from –10 °C to +120 °C. Its modular, flange-mount design accommodates standard filter elements and features a bypass valve set at 7 bar plus a differential pressure maintenance indicator.

Key Features:

• Model: PI 3405‑13 NBR (PI 340 series)  

• Series: PI 340 medium-pressure filter family  

• Nominal size: DN 15, ≈50 L/min flow capacity  

• Max. Pressure: 350 bar (optional lower ratings 250/315 bar)  

• Temperature Range: –10 °C to +120 °C  

• Materials:

  • Housing: Ductile iron or steel (GGG)

  • Seals: NBR (nitrile rubber)  

• Bypass Valve: Built-in bypass set at 7 bar  

• Indicator: Differential pressure indicator (mechanical or optional electronic)  

• Mounting Type: Flangeable design for integration in hydraulic control blocks