303.02.0051 KNORR-BREMSE 4-circuit protection valve
303.02.0051
Summary
●Port 1: M22x1,5 ●Port 21: M16x1,5 ●Port 22: M16x1,5 ●Port 23: M16x1,5 ●Port 24: M16x1,5 ●Operating Pressure: 13 BAR ●Opening Pressure 21/22/23/24: 7 BAR ●Closing Pressure 21/22/23/24: 4,5 BAR ●Max Pressure: 20 BAR. High-strength component for heavy commercial vehicle brake systems.
| EAN Code | 8683457005303 |
|---|
Ready to Order
Compatible OEM Codes
- KNORR-BREMSE K019908 AE 4645
Description
This high-strength component is engineered to ensure precision and reliability within the pneumatic brake system of heavy commercial vehicles. It manages pressure distribution across multiple circuits to maintain consistent braking performance under demanding operational conditions.
The 303.02.0051 is the OE equivalent of the KNORR-BREMSE AE4645 and K019908 products used in KNORR-BREMSE systems. This unit features a primary port of M22x1,5 and four secondary ports of M16x1,5, operating at a standard pressure of 13 BAR with a maximum threshold of 20 BAR.
Designed for workshop technicians and fleet managers, this part facilitates stable air distribution with specific opening pressures of 7 BAR and closing pressures of 4,5 BAR for all four circuits. The robust construction ensures long-term durability in heavy-duty applications.
Regular inspection of the port connections and pressure thresholds is recommended during routine maintenance to ensure optimal system response and safety.
The 303.02.0051 is the OE equivalent of the KNORR-BREMSE AE4645 and K019908 products used in KNORR-BREMSE systems. This unit features a primary port of M22x1,5 and four secondary ports of M16x1,5, operating at a standard pressure of 13 BAR with a maximum threshold of 20 BAR.
Designed for workshop technicians and fleet managers, this part facilitates stable air distribution with specific opening pressures of 7 BAR and closing pressures of 4,5 BAR for all four circuits. The robust construction ensures long-term durability in heavy-duty applications.
Regular inspection of the port connections and pressure thresholds is recommended during routine maintenance to ensure optimal system response and safety.
Technical Specifications
| Port 1 | M22x1,5 |
|---|---|
| Port 21 | M16x1,5 |
| Port 22 | M16x1,5 |
| Port 23 | M16x1,5 |
| Port 24 | M16x1,5 |
| Operating Pressure | 13 BAR |
| Opening Pressure 21 | 7 BAR |
| Opening Pressure 22 | 7 BAR |
| Opening Pressure 23 | 7 BAR |
| Opening Pressure 24 | 7 BAR |
| Closing Pressure 21 | 4,5 BAR |
| Closing Pressure 22 | 4,5 BAR |
| Closing Pressure 23 | 4,5 BAR |
| Closing Pressure 24 | 4,5 BAR |
| Pressure | MAX 20 BAR |
Other OEMs
KNORR-BREMSE
- AE4645
- K019908
- AE 4645
Related Products
Repair Kits
Vehicles Used
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What are the compatible OEM reference numbers for this part?
This product is compatible with the following OEM codes: AE4645, K019908.
What is the operating pressure range for this valve?
The unit operates at a standard pressure of 13 BAR with a maximum pressure capacity of up to 20 BAR.
Which vehicle systems does this part serve?
This component is specifically designed for pneumatic brake systems within heavy commercial vehicle applications and is compatible with KNORR-BREMSE hardware.
What are the port specifications for installation?
The valve features one M22x1,5 port (Port 1) and four M16x1,5 ports (Ports 21, 22, 23, and 24) for precise pneumatic connection.
How do I identify if a replacement is needed?
Technicians should monitor for deviations in opening (7 BAR) or closing (4,5 BAR) pressures across the four circuits during system diagnostics.