303.02.0021 Multi-circuit Protection Valve | KNORR-BREMSE
303.02.0021
Summary
The 303.02.0021 Multi-circuit Protection Valve is a high-strength component for brake systems. Features include Port 1: M22x1,5, Port 21: M22x1,5, Port 27: M12x1,5, and Port 28: M12x1,5. It is compatible with KNORR-BREMSE and RENAULT TRUCKS systems.
| EAN Code | 8699031080765 |
|---|
Ready to Order
Compatible OEM Codes
- KNORR-BREMSE II37922 AE 4525
- RENAULT TRUCKS 5010525808
Description
The Multi-circuit Protection Valve plays a critical role in ensuring the stability and safety of the pneumatic brake system by managing air distribution across multiple circuits. This component is designed to provide reliable pressure regulation and protection against sudden pressure drops in the event of a circuit failure.
The 303.02.0021 is the OE equivalent of the KNORR-BREMSE AE4525, II37922 and RENAULT TRUCKS 5010525808 used in heavy commercial vehicles. This valve features specific pressure settings, including an opening pressure of 7,3 BAR for port 23 and 7 BAR for port 24, ensuring precise operational control within the brake system architecture.
For workshop technicians and fleet managers, this part offers high-strength performance with specific port configurations (M22x1,5 and M12x1,5) to match original specifications. Regular inspection of the pneumatic circuits and connection points is recommended during routine maintenance to ensure optimal braking response.
When replacing a malfunctioning protection valve, verify that the opening and closing pressure thresholds match the vehicle's technical requirements to maintain system integrity.
The 303.02.0021 is the OE equivalent of the KNORR-BREMSE AE4525, II37922 and RENAULT TRUCKS 5010525808 used in heavy commercial vehicles. This valve features specific pressure settings, including an opening pressure of 7,3 BAR for port 23 and 7 BAR for port 24, ensuring precise operational control within the brake system architecture.
For workshop technicians and fleet managers, this part offers high-strength performance with specific port configurations (M22x1,5 and M12x1,5) to match original specifications. Regular inspection of the pneumatic circuits and connection points is recommended during routine maintenance to ensure optimal braking response.
When replacing a malfunctioning protection valve, verify that the opening and closing pressure thresholds match the vehicle's technical requirements to maintain system integrity.
Technical Specifications
| Port 1 | M22x1,5 |
|---|---|
| Port 21 | M22x1,5 |
| Port 22 | M22x1,5 |
| Port 23 | M22x1,5 |
| Port 24 | M22x1,5 |
| Port 25 | M22x1,5 |
| Port 26 | M22x1,5 |
| Port 27 | M12x1,5 |
| Port 28 | M12x1,5 |
| Opening Pressure 23 | 7,3 BAR |
| Opening Pressure 24 | 7 BAR |
| Closing Pressure 21/22 | 4,5 BAR |
| Closing Pressure 23/24 | 4,5 BAR |
| Opening Pressure 21/22 | 7 BAR |
Other OEMs
KNORR-BREMSE
- AE4525
- II37922
- AE 4525
RENAULT TRUCKS
- 5010525808
Related Products
Repair Kits
Vehicles Used
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE | |||
| RENAULT TRUCKS |
FAQ
What are the compatible OEM reference numbers for this valve?
This product is compatible with the following OEM references: AE4525, II37922, 5010525808.
Which vehicle manufacturers use this multi-circuit protection valve?
This component is designed for use in systems from KNORR-BREMSE and RENAULT TRUCKS.
What are the technical port specifications for this part?
The valve includes ports with M22x1,5 threads (Ports 1, 21, 22, 23, 24, 25, 26) and M12x1,5 threads (Ports 27 and 28).
How does the valve handle pressure thresholds?
The valve operates with specific opening pressures such as 7,3 BAR for port 23 and 7 BAR for port 24 to ensure circuit safety.
Can this part be used in heavy commercial vehicle brake systems?
Yes, it is a specialized component designed for heavy commercial vehicle brake systems to manage multi-circuit air distribution.