303.02.0044 Compatible 4-Circuit Protection Valve
303.02.0044
Summary
This 4-circuit protection valve is engineered for heavy commercial vehicle brake systems. It features M22x1.5 and M16x1.5 ports, operating at 12 BAR, ensuring precise pressure management and reliability in demanding environments. Equivalent to OE Knorr-Bremse AE4616.
| EAN Code | 8683457005235 |
|---|
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Compatible OEM Codes
-
KNORR-BREMSE
- II36150
- AE 4616
Description
What does a protection valve do?
This protection valve plays a critical role in the pneumatic brake system by dividing the air supply into multiple independent circuits. By isolating different braking sections, it ensures that a leak in one area does not lead to a total loss of braking capability, maintaining essential safety standards for heavy commercial vehicles.System compatibility and design
This component is designed to function within complex pneumatic systems, offering high-strength construction for durability. It is compatible with Knorr-Bremse systems and is engineered to manage pressure fluctuations effectively during heavy-duty operation.Technical specifications and installation
Technical specifications include an operating pressure of 12 BAR and a maximum pressure rating of 20 BAR. The valve features a primary M22x1.5 port alongside M16x1.5 ports for the various circuit outlets, providing precise control through specific opening and closing pressure thresholds.Maintenance and selection
When replacing this unit, technicians should verify all port connections and ensure the pressure settings align with the vehicle's original specifications to maintain optimal braking performance. Consult your authorized distributor.OE cross-reference
303.02.0044 (4-circuit protection valve) is the equivalent of the Knorr-Bremse OE numbers. This part directly replaces Knorr-Bremse OE numbers AE4616, II36150.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 | 6,8 BAR |
| Opening Pressure 22 | 6,8 BAR |
| Opening Pressure 23 | 7 BAR |
| Opening Pressure 24 | 6,8 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
- AE4616
- II36150
- AE 4616
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the function of a 4-circuit protection valve?
It divides the air supply into four independent circuits, ensuring that a failure in one circuit does not compromise the braking performance of the others.
What are the port specifications for this valve?
The valve is equipped with one M22x1.5 port and four M16x1.5 ports (labeled 21, 22, 23, and 24) to accommodate standard pneumatic connections.
What is the maximum operating pressure?
The component is designed for an operating pressure of 12 BAR, with a maximum allowable pressure capacity of up to 20 BAR.
Is this compatible with Knorr-Bremse systems?
Yes, this 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?
303.02.0044 directly replaces Knorr-Bremse OE numbers AE4616, II36150.