Haldex 90555409 65 PSI Pressure Protection Valve with Integrated Check Valve

The Haldex 90555409 is a heavy-duty pressure protection valve (PPV) designed to protect critical air brake system circuits in commercial vehicles. This valve ensures that essential systems maintain adequate air pressure before supplying secondary circuits, preventing complete system failure in the event of air loss.

Key Features:

• 65 PSI closing pressure setting for reliable circuit protection
• Integrated check valve prevents reverse air flow and maintains downstream pressure
• Durable construction designed for heavy-duty commercial vehicle applications
• Protects accessory circuits while prioritizing brake system pressure
• Compliant with FMVSS 121 air brake system requirements

This pressure protection valve is commonly used to protect air supply to auxiliary systems such as air suspension, air horns, and other accessories. The integrated check valve eliminates the need for a separate component, simplifying installation and reducing potential leak points in the air system.