303.02.0083 Compatible 4-Circuit Protection Valve
303.02.0083
Summary
This 4-circuit protection valve is engineered for heavy commercial vehicle brake systems. It features M22x1.5 and M16x1.5 port configurations with specific opening pressures of 7 BAR and closing pressures of 4.8 BAR to ensure precise pneumatic control. Equivalent to OE Knorr-Bremse AE4190.
| EAN Code | 8683457009424 |
|---|
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Compatible OEM Codes
-
KNORR-BREMSE
- AE 4190
Description
What does a protection valve do?
This protection valve plays a critical role in the pneumatic brake system of heavy commercial vehicles by managing air distribution across multiple circuits. By isolating individual circuits, it prevents a single leak from causing a total loss of braking pressure, ensuring maximum safety during operation.System compatibility and application
This component is designed to be compatible with Knorr-Bremse systems and other heavy-duty pneumatic configurations. It functions effectively in high-pressure environments, maintaining stable air distribution throughout the braking network.Technical specifications and installation
The unit features specific port dimensions including one M22x1.5 inlet and four M16x1.5 outlets. Technical performance is defined by an opening pressure of 7 BAR and a closing pressure of 4.8 BAR across the ports, providing reliable circuit isolation for workshop technicians during installation and maintenance.Maintenance and selection guidance
Consult your authorized distributor to ensure this component meets the specific requirements of your vehicle's pneumatic configuration.OE cross-reference
303.02.0083 (4-circuit protection valve) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number AE4190.Technical Specifications
| Port 1 | M22x1,5 |
|---|---|
| Port 21 | M16x1,5 |
| Port 22 | M16x1,5 |
| Port 23 | M16x1,5 |
| Port 24 | M16x1,5 |
| Opening Pressure 21 | 7 BAR |
| Opening Pressure 22 | 7 BAR |
| Opening Pressure 23 | 7 BAR |
| Opening Pressure 24 | 7 BAR |
| Closing Pressure 21 | 4,8 BAR |
| Closing Pressure 22 | 4,8 BAR |
| Closing Pressure 23 | 4,8 BAR |
| Closing Pressure 24 | 4,8 BAR |
Other OEMs
KNORR-BREMSE
- AE4190
- AE 4190
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 manages the air distribution in a brake system by isolating circuits, ensuring that a leak in one area does not compromise the entire braking capability.
What are the port sizes for this component?
The valve is equipped with one M22x1.5 port and four M16x1.5 ports for precise pneumatic connection.
What are the pressure thresholds for this valve?
The device operates with an opening pressure of 7 BAR and a closing pressure of 4.8 BAR across its ports.
Which systems is this valve compatible with?
This component is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicle braking applications.
What are the OE reference numbers of this part?
303.02.0083 directly replaces Knorr-Bremse OE number AE4190.