303.02.0005 Compatible 4-Circuit Protection Valve
303.02.0005
Summary
This heavy-duty 4-circuit protection valve is designed for reliable pneumatic brake system management. It features M22x1.5 and M16x1.5 port sizes and maintains an operating pressure of 12 BAR, ensuring stable pressure distribution across multiple circuits in heavy commercial vehicles. Equivalent to OE Knorr-Bremse AE4612 and MAN N1011066148.
| EAN Code | 8699031096216 |
|---|
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Compatible OEM Codes
-
MAN
- N1.01106.6148
- N1.01106-6148
-
KNORR-BREMSE
- II38801F
- AE 4612
Description
What does a 4-circuit protection valve do?
This 4-circuit protection valve plays a critical role in the pneumatic braking system of heavy commercial vehicles by dividing the air supply into distinct circuits. By isolating air pressure, it ensures that a leak in one circuit does not lead to a total loss of braking capability, maintaining essential safety standards during operation.Vehicle and system compatibility
This component is compatible with MAN vehicles and serves as an equivalent for Knorr-Bremse systems. It is engineered to function effectively within high-pressure environments, supporting the complex air distribution requirements of modern heavy-duty chassis and braking architectures.Technical specifications and installation
The unit features specific port configurations, including an M22x1.5 inlet and multiple M16x1.5 outlets. For proper maintenance, technicians should monitor the opening pressures, which are calibrated at approximately 7 BAR for most ports, and ensure the maximum operating pressure does not exceed 20 BAR.Maintenance and troubleshooting
When inspecting the braking system, check for consistent pressure regulation across all four circuits. If uneven pressure distribution or delayed response occurs, consult your authorized distributor to verify component integrity.OE cross-reference
303.02.0005 (4-circuit protection valve) is the equivalent of the Knorr-Bremse and MAN OE numbers. This part directly replaces Knorr-Bremse OE numbers AE4612, II38801F. It also replaces MAN OE numbers N1011066148, N1011066148.Technical Specifications
| Port 1 | M22x1,5 |
|---|---|
| Port 21 | M16x1,5 |
| Port 22 | M16x1,5 |
| Port 23 | M16x1,5 |
| Port 24 | M16x1,5 |
| Operating Pressure | 12 BAR |
| Opening Pressure 21 | 7 BAR |
| Opening Pressure 22 | 7 BAR |
| Opening Pressure 23 | 7 BAR |
| Opening Pressure 24 | 7,2 BAR |
| Closing Pressure 21 | 5,5 BAR |
| Closing Pressure 22 | 5,5 BAR |
| Closing Pressure 23 | 5,5 BAR |
| Closing Pressure 24 | 5,5 BAR |
| Pressure | MAX 20 BAR |
Other OEMs
KNORR-BREMSE
- AE4612
- II38801F
- AE 4612
MAN
- N1011066148
- N1-01106-6148
- N1.01106.6148
- N1.01106-6148
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE | |||
| MAN |
FAQ
What is the primary function of this protection valve?
It divides the air supply into four separate circuits to ensure that a leak in one area does not compromise the entire braking system's performance.
What are the port specifications for this component?
The valve is equipped with one M22x1.5 port and four M16x1.5 ports to facilitate standardized pneumatic connections.
What is the maximum operating pressure?
The component is designed to operate safely with a maximum pressure of up to 20 BAR within the pneumatic system.
Which vehicle brands is this compatible with?
This part is compatible with MAN vehicles and is suitable for use in systems equivalent to Knorr-Bremse designs.
What are the OE reference numbers of this part?
303.02.0005 directly replaces Knorr-Bremse OE numbers AE4612, II38801F. It also replaces MAN OE numbers N1011066148, N1011066148.