303.02.0095 Compatible 4-Circuit Protection Valve
303.02.0095
Summary
This 4-circuit protection valve is engineered for heavy commercial vehicle brake systems. It features specific port configurations including M22x1.5 and M16x1.5, with opening pressures ranging from 6.5 BAR to 7.3 BAR to ensure precise pneumatic control and system safety. Equivalent to OE Knorr-Bremse AE4443.
| EAN Code | 8683457009530 |
|---|
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Compatible OEM Codes
-
KNORR-BREMSE
- AE 4443
Description
What does a protection valve do?
This protection valve plays a critical role in the pneumatic brake system by managing air pressure distribution across multiple circuits. By isolating different brake lines, it ensures that a leak in one section does not lead to a total loss of braking capability, maintaining essential safety for heavy commercial vehicles.System compatibility
This component is designed to be compatible with Knorr-Bremse systems and meets rigorous industry standards for pneumatic reliability. It is an essential replacement part for workshop technicians maintaining fleet safety and braking integrity.Installation and technical specifications
The unit features specialized port sizes including one M22x1.5 inlet and several M16x1.5 outlets. Technicians should verify that the opening pressures—specifically 6.5 BAR for ports 21 and 22, and 7.3 BAR for ports 23 and 24—match the original equipment requirements during installation.Maintenance guidance
Regular inspection of the valve's ports and pressure thresholds is recommended to prevent system imbalances. Consult your authorized distributor.OE cross-reference
303.02.0095 (4-circuit protection valve) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number AE4443.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 | 6,5 BAR |
| Opening Pressure 22 | 6,5 BAR |
| Opening Pressure 23 | 7,3 BAR |
| Opening Pressure 24 | 7,3 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
- AE4443
- AE 4443
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the primary function of this 4-circuit protection valve?
It manages air pressure within the braking system by dividing it into four separate circuits, ensuring that a failure in one circuit does not compromise the entire braking performance.
Which systems is this component compatible with?
This component is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicle braking setups.
What are the specific port dimensions for this valve?
The valve features one M22x1.5 port and four M16x1.5 ports (21, 22, 23, and 24) to accommodate standard pneumatic connections.
How do I verify the pressure settings during installation?
Technicians should ensure the opening pressures match: ports 21 and 22 operate at 6.5 BAR, while ports 23 and 24 operate at 7.3 BAR.
What are the OE reference numbers of this part?
303.02.0095 directly replaces Knorr-Bremse OE number AE4443.