303.02.0023 Multi-circuit Protection Valve — Knorr-Bremse
303.02.0023
Summary
This multi-circuit protection valve ensures pneumatic stability within brake systems. Featuring M22x1,5 ports and 7 BAR opening pressure, it is designed for heavy commercial vehicle applications and is compatible with Knorr-Bremse systems. Equivalent to OE Knorr-Bremse AE4528S.
| EAN Code | 8699031080789 |
|---|
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Compatible OEM Codes
-
KNORR-BREMSE
- AE 4528 S
Description
What does a multi-circuit protection valve do?
This multi-circuit protection valve plays a critical role in the pneumatic brake system by managing air pressure distribution across multiple circuits. By regulating airflow, it prevents a complete loss of braking force in the event of a single circuit failure, ensuring the safety and stability of the heavy commercial vehicle during operation.Compatibility and technical specifications
The component is engineered for high-performance environments and is compatible with Knorr-Bremse systems. It features specific technical parameters, including M22x1,5 ports and opening pressures ranging from 7 BAR to 7.5 BAR, alongside a 5 V pressure sensor capability for precise monitoring.Installation and maintenance
For workshop technicians, proper installation requires verifying port sizes and ensuring all connections are secure to maintain system integrity. Regular inspection of the valves and pressure settings is recommended to prevent pneumatic leaks or improper braking response in heavy commercial vehicles.System reliability
Consult your authorized distributor.OE cross-reference
303.02.0023 (Multi-circuit Protection Valve) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number AE4528S.Technical Specifications
| Port 1 | M16x1,5 |
|---|---|
| Port 21 | M22x1,5 |
| Port 22 | M22x1,5 |
| Port 23 | M22x1,5 |
| Port 24 | M22x1,5 |
| Port 25 | M22x1,5 |
| Port 26 | M22x1,5 |
| Opening Pressure 1 | 7 BAR |
| Opening Pressure 2 | 7 BAR |
| Opening Pressure 3 | 7,5 BAR |
| Opening Pressure 4 | 7 BAR |
| Closing Pressure 1/2 | 4,5 BAR |
| Closing Pressure 3/4 | 4,5 BAR |
| Port 11 | M22x1,5 |
| Pressure sensor | 5 V |
Other OEMs
KNORR-BREMSE
- AE4528-S
- AE 4528-S
- AE 4528 S
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the function of this multi-circuit protection valve?
It manages air pressure across different brake circuits to ensure that a leak in one circuit does not compromise the entire braking system's performance.
What are the primary technical specifications?
The valve features M22x1,5 ports and provides opening pressures between 7 BAR and 7.5 BAR to maintain optimal pneumatic pressure.
Which brands is this component compatible with?
This part is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicles.
How can I identify if the valve needs replacement?
Technicians should look for symptoms of uneven braking or pressure drops in specific circuits that indicate a failure in the protection mechanism.
What are the OE reference numbers of this part?
303.02.0023 directly replaces Knorr-Bremse OE number AE4528S.