303.02.0079 Compatible 4-Circuit Protection Valve
303.02.0079
Summary
This 4-circuit protection valve is engineered for heavy commercial vehicle brake systems. It features M22x1,5 and M16x1,5 port configurations with specific 7 BAR opening and 4,5 BAR closing pressures to ensure reliable pneumatic circuit management. Compatible with Knorr-Bremse systems. Equivalent to OE Knorr-Bremse AE4185.
| EAN Code | 8683457009387 |
|---|
Ready to Order
Compatible OEM Codes
-
KNORR-BREMSE
- AE 4185
Description
This 4-circuit protection valve plays a critical role in the pneumatic brake system by dividing the air supply into multiple independent circuits. By isolating different parts of the braking system, it ensures that a leak in one circuit does not lead to a total loss of braking pressure across the entire vehicle. This component is manufactured using high-strength components to withstand constant pressure fluctuations and harsh operating environments.
Designed for heavy commercial vehicle applications, this valve is compatible with Knorr-Bremse systems. It manages air distribution through precise pressure regulation, ensuring that each circuit receives the necessary pneumatic force required for safe braking performance under heavy loads.
For proper maintenance, technicians should inspect the port connections (M22x1,5 and M16x1,5) for any signs of air leakage or debris. The valve operates with an opening pressure of 7 BAR and a closing pressure of 4,5 BAR across all four circuits (21, 22, 23, and 24). Regular checks of the pneumatic lines and port integrity are essential during routine inspections to maintain system reliability.
Consult your authorized distributor.
Designed for heavy commercial vehicle applications, this valve is compatible with Knorr-Bremse systems. It manages air distribution through precise pressure regulation, ensuring that each circuit receives the necessary pneumatic force required for safe braking performance under heavy loads.
For proper maintenance, technicians should inspect the port connections (M22x1,5 and M16x1,5) for any signs of air leakage or debris. The valve operates with an opening pressure of 7 BAR and a closing pressure of 4,5 BAR across all four circuits (21, 22, 23, and 24). Regular checks of the pneumatic lines and port integrity are essential during routine inspections to maintain system reliability.
Consult your authorized distributor.
OE cross-reference
303.02.0079 (4-circuit protection valve) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number AE4185.Technical Specifications
| Port 1 | M22x1,5 |
|---|---|
| Port 21 | M16x1,5 |
| Port 22 | M16x1,5 |
| Port 23 | M16x1,5 |
| Port 24 | M16x1,5 |
| Opening Pressure 21 | 7 BAR |
| Opening Pressure 22 | 7 BAR |
| Opening Pressure 23 | 7 BAR |
| Opening Pressure 24 | 7 BAR |
| Closing Pressure 21 | 4,5 BAR |
| Closing Pressure 22 | 4,5 BAR |
| Closing Pressure 23 | 4,5 BAR |
| Closing Pressure 24 | 4,5 BAR |
Other OEMs
KNORR-BREMSE
- AE4185
- AE 4185
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the function of a 4-circuit protection valve?
It divides the air supply into four separate circuits to ensure that a failure or leak in one circuit does not compromise the entire braking system's functionality.
What are the port specifications for this valve?
The valve is equipped with one M22x1,5 port and four M16x1,5 ports (designated as 21, 22, 23, and 24) for precise air distribution.
What are the operating pressure thresholds?
The component features an opening pressure of 7 BAR and a closing pressure of 4,5 BAR for each of its four output ports.
Which brands is this component compatible with?
This valve is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicles.
What are the OE reference numbers of this part?
303.02.0079 directly replaces Knorr-Bremse OE number AE4185.