303.02.0077 4-circuit protection valve - KNORR-BREMSE
303.02.0077
Summary
●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: 6,5 BAR ●Opening Pressure 23: 6,5 BAR ●Opening Pressure 24: 6,5 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. Compatible with KNORR-BREMSE systems.
| EAN Code | 8683457009363 |
|---|
Ready to Order
Compatible OEM Codes
- KNORR-BREMSE AE 4178
Description
The high-strength design of this component ensures reliable air distribution within the pneumatic brake system. Designed for heavy commercial vehicle applications, this valve manages multiple air circuits to maintain consistent braking performance under demanding conditions.
This 4-circuit protection valve is the OE equivalent of the KNORR-BREMSE AE4178 used in specialized braking systems. It features a primary port of M22x1,5 and four secondary ports (Port 21, 22, 23, and 24) with M16x1,5 threads. The specific pressure settings include an opening pressure of 7 BAR for Port 21 and 6.5 BAR for the remaining circuits, with a closing pressure of 4.5 BAR across all secondary ports.
For workshop technicians performing maintenance or system upgrades, this part offers precise control over pressure differentials. It is essential for ensuring the stability of the pneumatic circuit and preventing system failures during operation.
VADEN ORIGINAL components are engineered to meet strict technical standards for durability and precision in heavy-duty environments.
This 4-circuit protection valve is the OE equivalent of the KNORR-BREMSE AE4178 used in specialized braking systems. It features a primary port of M22x1,5 and four secondary ports (Port 21, 22, 23, and 24) with M16x1,5 threads. The specific pressure settings include an opening pressure of 7 BAR for Port 21 and 6.5 BAR for the remaining circuits, with a closing pressure of 4.5 BAR across all secondary ports.
For workshop technicians performing maintenance or system upgrades, this part offers precise control over pressure differentials. It is essential for ensuring the stability of the pneumatic circuit and preventing system failures during operation.
VADEN ORIGINAL components are engineered to meet strict technical standards for durability and precision in heavy-duty environments.
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 | 6,5 BAR |
| Opening Pressure 23 | 6,5 BAR |
| Opening Pressure 24 | 6,5 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 |
Other OEMs
KNORR-BREMSE
- AE4178
- AE 4178
Related Products
Repair Kits
Vehicles Used
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the function of this component in a brake system?
It acts as a safety device that manages and protects multiple air circuits within the pneumatic braking system to ensure reliable operation.
What are the technical port specifications for this valve?
The valve features one M22x1,5 port (Port 1) and four M16x1,5 ports (Ports 21, 22, 23, and 24).
Which OEM numbers is this part compatible with?
This product is compatible with the KNORR-BREMSE AE4178.
What are the opening and closing pressure settings?
The opening pressure is 7 BAR for Port 21 and 6.5 BAR for others; the closing pressure is set at 4.5 BAR for all secondary ports.
Is this part suitable for heavy commercial vehicles?
Yes, it is designed specifically for heavy commercial vehicle brake systems requiring high-strength pneumatic control.