303.02.0019 Knorr-Bremse Compatible Protection Valve
303.02.0019
Summary
This multi-circuit protection valve is designed for heavy commercial vehicle brake systems. It features M22x1.5 VOSS ports with opening pressures of 9 BAR for ports 21/22 and 7.5 BAR for ports 23/24, ensuring reliable pressure regulation and circuit isolation. Equivalent to OE Knorr-Bremse AE4506.
| EAN Code | 8699031080741 |
|---|
Ready to Order
Compatible OEM Codes
-
KNORR-BREMSE
- II38797FN50
- II36008
- AE 4506
Description
This multi-circuit protection valve plays a critical role in the pneumatic brake system of heavy commercial vehicles. By managing air pressure across different circuits, it ensures that a leak in one section does not lead to a total loss of braking capability, thereby maintaining essential safety standards during operation.
This component is compatible with Knorr-Bremse systems and is engineered to withstand rigorous heavy-duty conditions. It features multiple M22x1.5 VOSS ports and precise pressure regulation, with opening pressures of 9 BAR for the first two circuits and 7.5 BAR for the subsequent circuits, ensuring stable pneumatic control.
For professional installation, technicians should verify that all M22x1.5 VOSS connections are properly seated to prevent air leaks. Regular inspection of the valve's opening and closing pressures—specifically 9/7 BAR and 7.5/4.5 BAR respectively—is recommended to ensure the integrity of the braking system.
Consult your authorized distributor to confirm exact fitment for your specific heavy commercial vehicle application.
This component is compatible with Knorr-Bremse systems and is engineered to withstand rigorous heavy-duty conditions. It features multiple M22x1.5 VOSS ports and precise pressure regulation, with opening pressures of 9 BAR for the first two circuits and 7.5 BAR for the subsequent circuits, ensuring stable pneumatic control.
For professional installation, technicians should verify that all M22x1.5 VOSS connections are properly seated to prevent air leaks. Regular inspection of the valve's opening and closing pressures—specifically 9/7 BAR and 7.5/4.5 BAR respectively—is recommended to ensure the integrity of the braking system.
Consult your authorized distributor to confirm exact fitment for your specific heavy commercial vehicle application.
OE cross-reference
303.02.0019 (Multi-circuit Protection Valve) is the equivalent of the Knorr-Bremse OE numbers. This part directly replaces Knorr-Bremse OE numbers AE4506, II36008, II38797FN50.Technical Specifications
| Port 1 | M22x1,5 VOSS |
|---|---|
| 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 |
| Port 27 | M22x1,5 |
| Port 28 | M22x1,5 |
| Opening Pressure 21/22 | 9 BAR |
| Opening Pressure 23/24 | 7,5 BAR |
| Closing Pressure 21/22 | 4,5 BAR |
| Closing Pressure 23/24 | 4,5 BAR |
| Closing Pressure 21/22 | 7 BAR |
Other OEMs
KNORR-BREMSE
- AE4506
- II38797FN50
- II36008
- AE 4506
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?
It protects the pneumatic brake system by isolating circuits during pressure drops, preventing a complete loss of braking force in the event of a leak.
What are the port specifications for this component?
The unit is equipped with M22x1.5 VOSS ports (Ports 21 through 26) and standard M22x1.5 ports (Ports 27 and 28) for secure integration.
How do the pressure ratings work for this valve?
The valve operates with specific pressure thresholds: 9 BAR opening/7 BAR closing for ports 21/22, and 7.5 BAR opening/4.5 BAR closing for ports 23/24.
Is this part compatible with Knorr-Bremse systems?
Yes, this multi-circuit protection valve is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicles.
What are the OE reference numbers of this part?
303.02.0019 directly replaces Knorr-Bremse OE numbers AE4506, II36008, II38797FN50.