303.02.0020-S Protection Valve for Brake Systems
303.02.0020-S
Summary
This multi-circuit protection valve is engineered for heavy commercial vehicle brake systems. It features M22x1.5 VOSS ports and specific opening pressures, including 9 BAR for ports 21/22 and 4.5 BAR for closing pressure on 23/24, ensuring precise pneumatic control. Equivalent to OE Knorr-Bremse AE4510SS.
| EAN Code | 8683457012028 |
|---|
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Compatible OEM Codes
-
KNORR-BREMSE
- AE 4510S S
Description
What does a protection valve do?
This multi-circuit protection valve serves as a critical component within the pneumatic brake system of heavy commercial vehicles. It is designed to manage air pressure distribution across various circuits, ensuring that a leak in one section does not compromise the entire braking capability. Built with high-strength components, it provides reliable pressure regulation under demanding operational conditions.System compatibility and performance
The component is compatible with Knorr-Bremse systems and is designed to meet rigorous industry standards for safety and performance. This part ensures stable air supply across multiple lines, maintaining the necessary pressure thresholds required for heavy-duty braking performance.Installation and maintenance guidance
For installation, technicians should verify the port specifications, as this unit utilizes M22x1.5 VOSS connections. Proper torque application during mounting is essential to prevent leaks. Regular inspection of the opening and closing pressures—such as the 9 BAR opening pressure for ports 21/22—is recommended during routine maintenance intervals.Troubleshooting and selection
Consult your authorized distributor to ensure correct fitment and part selection for your specific braking system requirements.OE cross-reference
303.02.0020-S (Multi-circuit Protection Valves Brake System) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number AE4510SS.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 |
| Opening Pressure 21/22 | 9 BAR |
| Closing Pressure 23/24 | 4,5 BAR |
| Opening Pressure 23 | 9 BAR |
| Opening Pressure 24 | 7,5 BAR |
| Closing Pressure 21/22 | 7 BAR |
| Sensor | - |
Other OEMs
KNORR-BREMSE
- AE4510S S
- AE 4510S S
Related Products
Used In
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the primary function of this protection valve?
It manages air pressure across multiple circuits in a heavy commercial vehicle's brake system to prevent total system failure in case of a leak.
Which port sizes are used on this component?
This valve is equipped with M22x1.5 VOSS ports for secure pneumatic connections.
What are the typical pressure settings for this valve?
The unit features specific operational thresholds, such as a 9 BAR opening pressure for ports 21/22 and a 4.5 BAR closing pressure for ports 23/24.
Is this compatible with Knorr-Bremse systems?
Yes, this multi-circuit protection valve is designed to be compatible with Knorr-Bremse systems.
What are the OE reference numbers of this part?
303.02.0020-S directly replaces Knorr-Bremse OE number AE4510SS.