303.02.0019 KNORR-BREMSE Multi-circuit Protection Valve
303.02.0019
Summary
This high-strength Multi-circuit Protection Valve is designed for heavy commercial vehicle brake systems. Featuring Port 1 to Port 26 with M22x1,5 VOSS connections, it ensures precise pressure regulation. Compatible with KNORR-BREMSE systems, it includes specialized opening pressures of 9 BAR for circuits 21/22 and 7,5 BAR for circuits 23/24 to maintain optimal braking performance.
| EAN Code | 8699031080741 |
|---|
Ready to Order
Compatible OEM Codes
- KNORR-BREMSE II38797FN50 II36008 AE 4506
Description
The Multi-circuit Protection Valve is a critical component within the pneumatic brake system of heavy commercial vehicles, ensuring the safe distribution of air pressure across multiple circuits. This component serves to isolate pressure drops in one circuit from affecting others, maintaining overall system stability during operation.
The 303.02.0019 is the OE equivalent of the KNORR-BREMSE AE4506 Multi-circuit Protection Valve used in compatible heavy-duty systems. It features several M22x1,5 VOSS ports (Ports 1 through 26) to accommodate various technical configurations and ensures precise control with an opening pressure of 9 BAR for circuits 21/22 and 7,5 BAR for circuits 23/24. This part is fully compatible with KNORR-BREMSE systems and meets the rigorous demands of professional workshop environments.
Maintenance technicians should ensure all M22x1,5 VOSS connections are seated correctly to prevent air leaks and verify that the closing pressures (7 BAR for 21/22 and 4,5 BAR for 23/24) align with the vehicle's original specifications during inspection. Regular checks of the valve body and port integrity are recommended to ensure long-term reliability in heavy-duty service.
For precise fitment, always cross-reference the installation requirements with the existing system architecture to ensure optimal air distribution.
The 303.02.0019 is the OE equivalent of the KNORR-BREMSE AE4506 Multi-circuit Protection Valve used in compatible heavy-duty systems. It features several M22x1,5 VOSS ports (Ports 1 through 26) to accommodate various technical configurations and ensures precise control with an opening pressure of 9 BAR for circuits 21/22 and 7,5 BAR for circuits 23/24. This part is fully compatible with KNORR-BREMSE systems and meets the rigorous demands of professional workshop environments.
Maintenance technicians should ensure all M22x1,5 VOSS connections are seated correctly to prevent air leaks and verify that the closing pressures (7 BAR for 21/22 and 4,5 BAR for 23/24) align with the vehicle's original specifications during inspection. Regular checks of the valve body and port integrity are recommended to ensure long-term reliability in heavy-duty service.
For precise fitment, always cross-reference the installation requirements with the existing system architecture to ensure optimal air distribution.
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
Products Used in
Vehicles Used
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE | |||
| KNORR-BREMSE | |||
| KNORR-BREMSE | |||
| KNORR-BREMSE | |||
| KNORR-BREMSE | |||
| KNORR-BREMSE | |||
| KNORR-BREMSE | |||
| KNORR-BREMSE |
FAQ
What are the compatible OEM references for this valve?
This part is compatible with the following OEM references: AE4506, II36008, and II38797FN50.
What are the technical port specifications?
The valve features several M22x1,5 VOSS ports (Ports 1 through 26) and standard M22x1,5 threads for Ports 27 and 28 to ensure precise pneumatic connections.
How does this valve function within a brake system?
It acts as a multi-circuit protection device, managing air pressure distribution between different circuits to prevent a single leak from compromising the entire braking system.
What are the operating pressure levels for this component?
The valve operates with an opening pressure of 9 BAR for circuits 21/22 and 7,5 BAR for circuits 23/24, with closing pressures of 7 BAR and 4,5 BAR respectively.
Is this part suitable for heavy commercial vehicle maintenance?
Yes, it is specifically engineered for heavy commercial vehicle brake systems and is compatible with high-standard KNORR-BREMSE hardware.