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949873 Compatible Governor Valve — Volvo

301.05.0002

Summary

This compressor governor valve is designed for Volvo NL12 trucks equipped with D12A engines. It features a 7.9 BAR pressure setting and an M10x1 port connection to ensure precise air system regulation within heavy commercial vehicle braking systems. Equivalent to OE Volvo 949873.

Product identifiers
EAN Code8699031057651
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Compatible OEM Codes

  • VOLVO
    • 949873
    • 3944252
    • 1505047
  • KNORR-BREMSE
    • 1189393000

Description

What does a governor valve do?

This compressor governor valve plays a critical role in regulating the air pressure within the pneumatic braking system. By managing the discharge of air, it ensures that the compressor operates within the necessary pressure thresholds required for reliable braking performance and system stability. It is manufactured with high-strength components to withstand constant cycling in heavy commercial vehicle applications.

Compatible vehicles and engines

This specific component is designed for use in Volvo NL12 trucks featuring D12A engines. It maintains precise control over the air supply, ensuring the braking system receives consistent pressure during operation. The part is engineered to meet the rigorous demands of heavy-duty service environments.

Installation and maintenance

When performing installation or maintenance, technicians should verify the M10x1 port size and ensure all connections are secure to prevent air leaks. Maintaining correct pressure settings is vital for the overall health of the pneumatic system. It is recommended to check all unloader lines during routine inspections to ensure optimal performance.

Selection guidance

Selecting the correct governor valve requires attention to technical specifications such as the pressure band and port dimensions. Using a component that matches the original equipment specifications ensures that the air brake system functions exactly as intended by the manufacturer.

OE cross-reference

301.05.0002 (Compressor Governor Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 949873.

Technical Specifications

Technical Specifications
Pressure7,9 BAR
PortM10x1

Other OEMs

KNORR-BREMSE

  • 1189393000

VOLVO

  • 949873
  • 3944252
  • 1505047

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
KNORR-BREMSE
VOLVO
VOLVO B10B D10A
VOLVO B10M D10A
VOLVO B12 D12A
VOLVO F10 TD102
VOLVO F12 TD122
VOLVO FL10 D10A
VOLVO FL10 TD102
VOLVO FL10 TD103
VOLVO FL12 TD122
VOLVO FL12 TD123
VOLVO NL10 D10A
VOLVO NL12 D12A

FAQ

What is the function of this governor valve?
The governor valve regulates the air pressure within the compressor system, ensuring it operates within a specific pressure range to maintain safe braking performance.
Which vehicle is this part compatible with?
This part is specifically designed for Volvo NL12 trucks equipped with D12A engines, ensuring precise fitment for these heavy commercial vehicles.
What are the key technical specifications?
This unit features a 7.9 BAR pressure setting and an M10x1 port size, which are critical parameters for ensuring correct pneumatic regulation.
How should I ensure correct fitment?
Technicians should verify that the port size and pressure thresholds match the existing system requirements to avoid improper regulation or air leaks.
What are the OE reference numbers of this part?
301.05.0002 directly replaces Volvo OE number 949873.