303.02.0074 4-circuit protection valve
303.02.0074
Summary
The 303.02.0074 is a precision 4-circuit protection valve designed for heavy-duty brake systems. It features one M22x1,5 port and four M16x1,5 ports, with specific opening and closing pressure settings for optimal pneumatic stability. Compatible with KNORR-BREMSE systems.
| EAN Code | 8683457009332 |
|---|
Ready to Order
Compatible OEM Codes
- KNORR-BREMSE AE 4169
Description
A high-quality 4-circuit protection valve is essential for maintaining stable pneumatic pressure across multiple circuits in heavy commercial vehicle brake systems. This component ensures that even if one circuit experiences a leak, the remaining circuits maintain sufficient pressure to ensure safety and operational control.
The 303.02.0074 is the OE equivalent of the KNORR-BREMSE AE4169 used in heavy-duty braking systems. It features a primary Port 1 of M22x1,5 and four secondary ports (21, 22, 23, 24) of M16x1,5. The device is engineered with specific pressure thresholds: an opening pressure of 7 BAR for all ports and closing pressures of 4.2 BAR for ports 21 and 22, and 5.5 BAR for ports 23 and 24.
For workshop technicians and fleet managers, this valve provides a reliable solution for maintaining pneumatic integrity within the brake system. Regular inspection of the port connections and pressure settings is recommended during routine brake system maintenance to ensure long-term performance and safety.
This component is designed to meet strict technical requirements for heavy commercial vehicle applications, ensuring seamless integration with existing pneumatic architectures.
The 303.02.0074 is the OE equivalent of the KNORR-BREMSE AE4169 used in heavy-duty braking systems. It features a primary Port 1 of M22x1,5 and four secondary ports (21, 22, 23, 24) of M16x1,5. The device is engineered with specific pressure thresholds: an opening pressure of 7 BAR for all ports and closing pressures of 4.2 BAR for ports 21 and 22, and 5.5 BAR for ports 23 and 24.
For workshop technicians and fleet managers, this valve provides a reliable solution for maintaining pneumatic integrity within the brake system. Regular inspection of the port connections and pressure settings is recommended during routine brake system maintenance to ensure long-term performance and safety.
This component is designed to meet strict technical requirements for heavy commercial vehicle applications, ensuring seamless integration with existing pneumatic architectures.
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 | 4,2 BAR |
| Closing Pressure 22 | 4,2 BAR |
| Closing Pressure 23 | 5,5 BAR |
| Closing Pressure 24 | 5,5 BAR |
Other OEMs
KNORR-BREMSE
- AE4169
- AE 4169
Related Products
Repair Kits
Vehicles Used
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the function of the 303.02.0074 valve?
The 4-circuit protection valve manages pneumatic pressure distribution across multiple circuits to ensure braking safety in case of a single circuit failure.
Which OEM brand is this part compatible with?
This product is compatible with the KNORR-BREMSE AE4169 system.
What are the port specifications for this component?
It features one M22x1,5 port (Port 1) and four M16x1,5 ports (Ports 21, 22, 23, and 24).
What are the opening pressure values for the circuits?
The opening pressure for all four ports (21, 22, 23, and 24) is set at 7 BAR.
When should a technician replace the protection valve?
Replacement is recommended if there are visible leaks in the pneumatic lines or if the system fails to maintain the specified closing pressures of 4.2 BAR or 5.5 BAR.