303.02.0075 Compatible 4-Circuit Protection Valve
303.02.0075
Summary
This heavy-duty 4-circuit protection valve is designed for precision pneumatic control. It features M22x1.5 and M16x1.5 ports, with opening pressures of 7.9 BAR and closing pressures of 6.4 BAR. Designed for reliability in heavy commercial vehicle brake systems. Equivalent to OE Knorr-Bremse AE4171.
| EAN Code | 8683457009349 |
|---|
Ready to Order
Compatible OEM Codes
-
KNORR-BREMSE
- AE 4171
Description
What does a 4-circuit protection valve do?
This protection valve plays a critical role in the pneumatic brake system by managing air distribution across multiple circuits. By regulating air flow through specific ports, it ensures that a leak in one circuit does not lead to a total loss of braking pressure, maintaining the safety and stability of the vehicle's braking performance.System compatibility and application
This component is engineered to be compatible with Knorr-Bremse systems. It is designed to withstand the rigorous demands of heavy commercial vehicle operations, ensuring consistent pressure regulation across all functional circuits.Technical specifications and installation
The unit is specified with an M22x1.5 inlet port and four M16x1.5 outlet ports. For optimal performance, technicians should verify that the opening pressure of 7.9 BAR and closing pressure of 6.4 BAR align with the specific system requirements during installation and periodic inspections.Maintenance and troubleshooting
Regular monitoring of the pneumatic lines and port connections is recommended to prevent air leaks or pressure drops. Consult your authorized distributor for installation guidance.OE cross-reference
303.02.0075 (4-circuit protection valve) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number AE4171.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 | 7,9 BAR |
| Opening Pressure 22 | 7,9 BAR |
| Opening Pressure 23 | 7,9 BAR |
| Opening Pressure 24 | 7,9 BAR |
| Closing Pressure 21 | 6,4 BAR |
| Closing Pressure 22 | 6,4 BAR |
| Closing Pressure 23 | 6,4 BAR |
| Closing Pressure 24 | 6,4 BAR |
Other OEMs
KNORR-BREMSE
- AE4171
- AE 4171
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 air pressure across four independent circuits, ensuring that a failure in one area does not compromise the entire braking system's integrity.
What are the port sizes for this component?
This valve features one M22x1.5 port and four M16x1.5 ports for precise pneumatic connection.
What are the pressure thresholds for this valve?
The component operates with an opening pressure of 7.9 BAR and a closing pressure of 6.4 BAR across its circuits.
Which systems is this valve compatible with?
This part is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicles.
What are the OE reference numbers of this part?
303.02.0075 directly replaces Knorr-Bremse OE number AE4171.