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303.02.0096 4-circuit protection valve, Brake System
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303.02.0096 Compatible 4-Circuit Protection Valve

303.02.0096

Summary

This 4-circuit protection valve is engineered for heavy commercial vehicle brake systems. It features M22x1,5 and M16x1,5 port configurations, ensuring precise pressure regulation across multiple circuits to maintain braking performance under heavy loads. Equivalent to OE Knorr-Bremse AE4446.

Product identifiers
EAN Code8683457009547
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Compatible OEM Codes

  • KNORR-BREMSE
    • AE 4446

Description

What does a 4-circuit protection valve do?

This 4-circuit protection valve plays a critical role in the pneumatic brake system of heavy commercial vehicles. It functions by dividing the air supply into separate circuits, ensuring that a leak in one section does not lead to a total loss of braking pressure. Built with high-strength components, it provides the necessary reliability for demanding transport environments.

System compatibility and function

This component is compatible with Knorr-Bremse systems and is designed to meet strict industrial standards. It ensures stable pressure distribution across the vehicle's pneumatic lines, maintaining safety even during sudden pressure drops in individual circuits.

Technical specifications and installation

The unit features specific technical parameters to ensure precise operation, including an M22x1,5 primary port and M16x1,5 secondary ports. It operates with opening pressures ranging from 6,7 BAR to 7,2 BAR and closing pressures at 4,5 BAR across its various ports. Technicians should verify these pressure settings during installation to ensure optimal system response.

Maintenance and troubleshooting

Regular inspection of the valve and its connections is recommended to prevent air leaks. Proper maintenance of the pneumatic circuit helps ensure this protection valve continues to perform its essential safety function throughout its service life.

OE cross-reference

303.02.0096 (4-circuit protection valve) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number AE4446.

Technical Specifications

Technical Specifications
Port 1M22x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Opening Pressure 216,7 BAR
Opening Pressure 226,7 BAR
Opening Pressure 237,2 BAR
Opening Pressure 247,2 BAR
Closing Pressure 214,5 BAR
Closing Pressure 224,5 BAR
Closing Pressure 234,5 BAR
Closing Pressure 244,5 BAR

Other OEMs

KNORR-BREMSE

  • AE4446
  • AE 4446

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
KNORR-BREMSE

FAQ

What is the function of a 4-circuit protection valve?
It divides the air supply into four independent circuits to ensure that a failure or leak in one circuit does not compromise the entire braking system.
What are the port specifications for this valve?
This valve is equipped with one M22x1,5 port and four M16x1,5 ports for secure pneumatic connections.
How do the pressure settings work?
The valve operates with opening pressures between 6,7 BAR and 7,2 BAR and maintains a closing pressure of approximately 4,5 BAR across its ports.
Is this compatible with Knorr-Bremse systems?
Yes, this component is designed to be compatible with Knorr-Bremse systems for heavy commercial vehicle applications.
What are the OE reference numbers of this part?
303.02.0096 directly replaces Knorr-Bremse OE number AE4446.