303.02.0043 Compatible 4-Circuit Protection Valve
303.02.0043
Summary
This heavy-duty 4-circuit protection valve features M22x1.5 and M16x1.5 port configurations. Designed for reliable pneumatic circuit management with an operating pressure of 12 BAR, it ensures precise pressure regulation for heavy commercial vehicle braking systems. Equivalent to OE Knorr-Bremse AE4615.
| EAN Code | 8683457005228 |
|---|
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Compatible OEM Codes
-
KNORR-BREMSE
- II39140FM1
- II39140F
- AE 4615
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. It manages air distribution across multiple circuits, ensuring that a leak in one line does not compromise the entire braking capability. Built with high-strength components, it maintains system stability under rigorous operating conditions.Compatibility and port specifications
This component is compatible with Knorr-Bremse systems and is designed to meet strict performance standards. It features specialized port sizes including M22x1.5 for the main inlet and M16x1.5 for the outlet ports, facilitating seamless integration into existing pneumatic lines.Installation and technical parameters
Technicians should note the specific pressure settings during installation: the opening pressures are set at 8 BAR for ports 21, 22, and 24, and 8.3 BAR for port 23. The closing pressure remains consistent at 5.5 BAR across all outlets to ensure synchronized response times within the brake system.Maintenance and performance
To maintain optimal braking performance, regular inspection of the valve ports and pressure regulation accuracy is recommended during scheduled maintenance intervals.OE cross-reference
303.02.0043 (4-circuit protection valve) is the equivalent of the Knorr-Bremse OE numbers. This part directly replaces Knorr-Bremse OE numbers AE4615, II39140F, II39140FM1.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 | 8 BAR |
| Opening Pressure 22 | 8 BAR |
| Opening Pressure 23 | 8,3 BAR |
| Opening Pressure 24 | 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
- AE4615
- II39140FM1
- II39140F
- AE 4615
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the primary function of this valve?
It manages air pressure distribution across four independent circuits to ensure that a single leak does not lead to a total loss of braking power.
What are the port specifications for this component?
The main port is M22x1.5, while the secondary output ports are M16x1.5, ensuring compatibility with standard heavy-duty pneumatic lines.
What is the maximum operating pressure?
The component is designed for a maximum operating pressure of up to 20 BAR, with a standard operating pressure of 12 BAR.
How can I identify if this valve is compatible?
Verify that your current system requires an opening pressure of approximately 8 BAR and follows the specified port threading requirements.
What are the OE reference numbers of this part?
303.02.0043 directly replaces Knorr-Bremse OE numbers AE4615, II39140F, II39140FM1.