303.02.0025 Knorr-Bremse Compatible Protection Valve
303.02.0025
Summary
This multi-circuit protection valve is designed for heavy commercial vehicle brake systems. It features specific M22x1.5 VOSS ports and M16x1.5 connections, ensuring precise pressure regulation with 9 BAR opening pressure for ports 21/22 to maintain system integrity in heavy-duty environments. Equivalent to OE Knorr-Bremse AE4804.
| EAN Code | 8699031080864 |
|---|
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Compatible OEM Codes
-
KNORR-BREMSE
- K014440
- AE 4804
Description
What does a protection valve do?
This multi-circuit protection valve plays a critical role in the pneumatic brake system of heavy commercial vehicles by isolating different circuits to prevent total air loss. By utilizing high-strength components, it ensures that a leak in one circuit does not compromise the braking capability of the entire vehicle system.System compatibility and technical configuration
This component is engineered to be compatible with Knorr-Bremse systems and provides reliable pressure management across multiple lines. The technical configuration includes M22x1.5 VOSS ports (21 through 26) and specific M16x1.5 and M12x1.5 port sizes to ensure precise integration into existing pneumatic layouts.Installation and maintenance guidance
Technicians should note the specific pressure settings: ports 21/22 operate with a 9 BAR opening pressure and 6 BAR closing pressure, while ports 23/24 operate at 7.5 BAR opening and 4.5 BAR closing. During installation, ensure all VOSS connections are properly seated to maintain optimal seal integrity and prevent pressure drops.Pressure regulation specifications
Regular inspection of the valve ports and pressure thresholds is recommended to prevent unexpected system failures during heavy-duty operation.OE cross-reference
303.02.0025 (Multi-circuit Protection Valve) is the equivalent of the Knorr-Bremse OE numbers. This part directly replaces Knorr-Bremse OE numbers AE4804, K014440.Technical Specifications
| Port 1 | M16x1,5 |
|---|---|
| Port 21 | M22x1,5 VOSS |
| Port 22 | M22x1,5 VOSS |
| Port 23 | M22x1,5 VOSS |
| Port 24 | M22x1,5 VOSS |
| Port 25 | M22x1,5 VOSS |
| Port 26 | M22x1,5 VOSS |
| Opening Pressure 21/22 | 9 BAR |
| Opening Pressure 23/24 | 7,5 BAR |
| Closing Pressure 21/22 | 6 BAR |
| Closing Pressure 23/24 | 4,5 BAR |
| Port 27 | M12x1,5 |
| Port 28 | M12x1,5 |
Other OEMs
KNORR-BREMSE
- AE4804
- K014440
- AE 4804
Related Products
Repair Kits
Used In
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the function of this multi-circuit protection valve?
The valve serves to isolate individual pneumatic circuits within the brake system, ensuring that a failure or leak in one circuit does not lead to a total loss of braking pressure for the entire vehicle.
What are the specific port specifications for this unit?
This unit features M22x1.5 VOSS ports (ports 21-26), an M16x1.5 port, and two M12x1.5 ports, allowing for complex circuit distribution.
How do the pressure settings differ between ports?
Ports 21/22 are set with a 9 BAR opening pressure and 6 BAR closing pressure, whereas ports 23/24 utilize a 7.5 BAR opening pressure and 4.5 BAR closing pressure.
Is this component suitable for heavy commercial vehicles?
Yes, this component is specifically designed for heavy commercial vehicle applications requiring high-strength components and reliable pneumatic regulation.
What are the OE reference numbers of this part?
303.02.0025 directly replaces Knorr-Bremse OE numbers AE4804, K014440.