303.01.0011 Relay Valve Compatible with WABCO Systems
303.01.0011
Summary
This high-strength relay valve features M22x1.5 VOSS ports and a maximum pressure rating of 10 BAR. It is designed for heavy commercial vehicle air brake systems, ensuring reliable pressure transfer for Mercedes-Benz, MAN, Scania, and other major brands. Equivalent to OE DAF 1506485, FAW 351801550A and Feldbinder 052473.
| EAN Code | 8699031096056 |
|---|
Ready to Order
Compatible OEM Codes
-
MERCEDES BENZ
- 004 429 38 44
- 003 429 93 44
-
MAN
- 81.52116-6070
- 81.52116-6027
-
KING LONG
- 35RB127010
- 235500300
-
FAW
- S3518015-Z77
- 3518015-50A
-
WABCO
- 973 011 001 0
-
TIRSAN
- 21151103060
-
SCANIA
- 2090236
-
ProVia
- PRO 011 006 0
-
OTOKAR
- AIF0776
-
LOHR
- A05021235
-
LANGENDORF
- 1218398
-
FELDBINDER
- 052473
-
DAF
- 1506485
Description
What does a relay valve do?
This relay valve plays a critical role in the compressed air brake system of heavy commercial vehicles by facilitating rapid air pressure transfer triggered by a pilot signal. Manufactured with high-strength components, it ensures that braking force is applied accurately and without delay to maintain vehicle safety under heavy loads.Compatible vehicles and engines
This component is engineered for use in various heavy-duty applications and is compatible with Mercedes-Benz, MAN, Scania, DAF, and Volvo vehicles. It also fits models from FAW, Feldbinder, King Long, Langendorf, Lohr, Otokar, and Tirsan. This relay valve is compatible with WABCO systems.Installation and maintenance
For proper installation, technicians should ensure all M22x1.5 VOSS ports are correctly aligned and the maximum operating pressure of 10 BAR is not exceeded. Regular inspection of the seals and connection points is recommended to prevent air leaks within the pneumatic circuit.Troubleshooting guidance
When troubleshooting braking delays, checking the pilot signal delivery to this valve can help identify system issues. Selecting a high-quality replacement ensures consistent performance across different vehicle makes.OE cross-reference
303.01.0011 (Relay Valve Relay Valves) is the equivalent of the DAF, FAW, Feldbinder, King Long, Langendorf, Lohr, MAN, Mercedes-Benz, Otokar, Provia, Scania, Tirsan and WABCO OE numbers. This part directly replaces DAF OE number 1506485. It also replaces FAW OE numbers 351801550A, S3518015Z77, Feldbinder OE number 052473, King Long OE numbers 235500300, 35RB127010, Langendorf OE number 1218398, Lohr OE number A05021235, MAN OE numbers 81521166027, 81521166070, Mercedes-Benz OE numbers 0034299344, 0044293844, Otokar OE number AIF0776, Provia OE number PRO0110060, Scania OE number 2090236, Tirsan OE number 21151103060 and WABCO OE number 9730110010.Technical Specifications
| Port 1 | M22x1,5 VOSS |
|---|---|
| Port 2 | M22x1,5 VOSS |
| Port 4 | M16x1,5 VOSS |
| Pressure | MAX 10 BAR |
Other OEMs
DAF
- 1506485
FAW
- S3518015Z77
- S3518015-Z77
- 3518015-50A
FELDBINDER
- 052473
KING LONG
- 35RB127010
- 235500300
LANGENDORF
- 1218398
LOHR
- A05021235
MAN
- 81521166070
- 81521166027
- 81.52116-6070
- 81.52116-6027
MERCEDES BENZ
- A0044293844
- A0034299344
- 0044293844
- 0034299344
- 004 429 38 44
- 003 429 93 44
OTOKAR
- AIF0776
ProVia
- PRO 011 006 0
SCANIA
- 2090236
TIRSAN
- 21151103060
WABCO
- 9730110010
- 973.011.001.0
- 973 011 001 0
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| DAF | |||
| FAW | |||
| FELDBINDER | |||
| KING LONG | |||
| LANGENDORF | |||
| LOHR | |||
| MAN | |||
| MERCEDES BENZ | |||
| OTOKAR | |||
| ProVia | |||
| SCANIA | |||
| TIRSAN | |||
| WABCO |
FAQ
What is the function of this relay valve?
It facilitates rapid air pressure transfer within the pneumatic braking system when triggered by a pilot signal.
Which vehicle brands are compatible?
It is compatible with Mercedes-Benz, MAN, Scania, DAF, FAW, Otokar, Tirsan, and several other heavy commercial vehicle makes.
What are the technical port specifications?
The unit features M22x1.5 VOSS ports (Port 1 and 2) and an M16x1.5 VOSS port (Port 4), with a maximum pressure of 10 BAR.
How can I know if my relay valve needs replacement?
Technicians should look for symptoms like delayed braking response or visible air leaks around the M22x1.5 VOSS connections.
What are the OE reference numbers of this part?
303.01.0011 directly replaces DAF OE number 1506485. It also replaces FAW OE numbers 351801550A, S3518015Z77, Feldbinder OE number 052473, King Long OE numbers 235500300, 35RB127010, Langendorf OE number 1218398, Lohr OE number A05021235, MAN OE numbers 81521166027, 81521166070, Mercedes-Benz OE numbers 0034299344, 0044293844, Otokar OE number AIF0776, Provia OE number PRO0110060, Scania OE number 2090236, Tirsan OE number 21151103060 and WABCO OE number 9730110010.