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303.06.0020 ALB Load Sensing Valve, Brake System

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303.06.0020 DAF Compatible ALB Load Sensing Valve

303.06.0020

Summary

This ALB Load Sensing Valve is designed for heavy commercial vehicle brake systems. It features specific port configurations including M16x1,5 and M22x1,5 connections to ensure precise pressure regulation according to load requirements. Compatible with DAF and WABCO systems. Equivalent to OE DAF 1518979 and WABCO 4757155050.

Product identifiers
EAN Code8683457010208
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Compatible OEM Codes

  • WABCO
    • 475 715 505 0
  • DAF
    • 1518979

Description

What does an ALB load sensing valve do?

This ALB load sensing valve plays a critical role in the pneumatic braking system of heavy commercial vehicles. It functions by automatically adjusting the brake pressure applied to the axles based on the actual load carried by the vehicle, ensuring optimal stopping performance and preventing brake lock-up under varying weight conditions.

Vehicle and system compatibility

The component is specifically engineered for compatibility with DAF vehicles and is also compatible with WABCO systems. It utilizes a high-strength construction to withstand the rigorous pressure fluctuations found in heavy-duty braking environments.

Technical specifications and ports

Technical specifications for this unit include multiple port configurations: Port 1 is M16x1,5, while Port 2 features M22x1,5 (x2) and M16x1,5 (x4). Additional connections include Port 4 (M22x1,5), Port 43 (M16x1,5), and specific control ports with pressure thresholds like 0,4 BAR and 4,4 BAR. Technicians should ensure all port threads match the vehicle's pneumatic lines during installation.

Installation and maintenance guidance

Regular inspection of the sensing arm and valve seals is recommended to maintain consistent braking response. For optimal performance, verify that the load-sensing mechanism moves freely and that there are no audible air leaks from the connection points.

OE cross-reference

303.06.0020 (ALB Load Sensing Valve) is the equivalent of the DAF and WABCO OE numbers. This part directly replaces DAF OE number 1518979. It also replaces WABCO OE number 4757155050.

Technical Specifications

Technical Specifications
Port 1M16x1,5
Port 2M22x1,5 (x2) - M16x1,5 (x4)
Port 4M22x1,5
Port 41M12x1,5
Port 42M12x1,5
Empty Pressure Port 410,4 BAR
Empty Pressure Port 420,4 BAR
Full Pressure Port 414,4 BAR
Full Pressure Port 424,4 BAR
Port 43M16x1,5
Port 1-2M22x1,5

Other OEMs

DAF

  • 1518979

WABCO

  • 4757155050
  • 475 715 505 0

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAF
WABCO

FAQ

What is the function of an ALB load sensing valve?
It adjusts the pneumatic brake pressure according to the weight of the vehicle load to ensure safe and efficient braking across all weight ranges.
Which vehicle brands is this valve compatible with?
This specific unit is designed for DAF vehicles and is also compatible with WABCO systems.
What are the primary port specifications for this part?
The unit features several connections including M16x1,5 and M22x1,5 ports, with specific pressure sensitivity at 0,4 BAR and 4,4 BAR.
How can I identify if a load sensing valve needs replacement?
Symptoms often include uneven braking performance or air leaks near the port connections during system testing.
What are the OE reference numbers of this part?
303.06.0020 directly replaces DAF OE number 1518979. It also replaces WABCO OE number 4757155050.