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U403004451 Unloader Valve Compatible with Irisbus

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U403004451 Unloader Valve for Irisbus Vehicles

301.01.0002

Summary

This high-strength unloader valve is designed for Irisbus brake systems. It features M22x1.5 and M12x1.5 port configurations and operates with a cut-out pressure of 8.1 BAR / 0.2 BAR to ensure precise air pressure regulation in heavy commercial vehicle brake systems. Equivalent to OE Irisbus U403004451.

Product identifiers
EAN Code8699031064369
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Compatible OEM Codes

  • MERCEDES BENZ
    • 003 431 38 06
    • 003 431 36 06
    • 002 431 87 06
    • 002 431 52 06
    • 002 431 46 06
    • 002 431 15 06
  • NEOPLAN
    • 1102733544131
    • 1102733544130
    • 1102732544114
    • 110273201
  • DAF
    • 75038R
    • 75038A
    • 75038
    • 285768
  • MAN
    • N2.50999-9114
    • 84.52101-9017
    • 84.52101-6017
  • WABCO
    • 975 303 474 0
  • VAN HOOL
    • 637214100
  • TEREX
    • 00024212
  • STEYR
    • 99100360090
  • SCANIA
    • 1935691
  • RENAULT TRUCKS
    • 5021170478
  • IVECO
    • 500002011
  • IRISBUS
    • U403004451
  • FAUN
    • 99708458257

Description

What does an unloader valve do?

This unloader valve serves as a critical component within the pneumatic brake system, managing air pressure release to maintain stable system operation. Built with heavy-duty grade materials, it ensures reliable performance under continuous pressure monitoring, which is essential for the safety of heavy commercial vehicles.

Vehicle compatibility

This component is specifically designed for use in Irisbus vehicles. It functions seamlessly within the pneumatic circuits of these heavy commercial vehicle models to ensure precise pressure regulation during braking cycles.

Installation and maintenance

Technicians should verify the port specifications before installation, as this unit features M22x1.5 and M12x1.5 ports. Ensuring the cut-out pressure settings match the vehicle requirements is vital for correct system operation and long-term reliability.

Selection guidance

Consult your authorized distributor.

OE cross-reference

301.01.0002 (Unloader Valve) is the equivalent of the Irisbus OE number. This part directly replaces Irisbus OE number U403004451.

Technical Specifications

Technical Specifications
Port 1M22x1,5
Port 4M12x1,5
Port 21M22x1,5
Port 22M12x1,5
Port 23M12x1,5
Cut-Out Pressure8,1 BAR / 0,2 BAR
Inflation ValveOK
Recycle Valve-

Other OEMs

DAF

  • 0285768
  • 0075038
  • 75038R
  • 75038A
  • 75038
  • 285768

FAUN

  • 99708458257

IRISBUS

  • U403004451

IVECO

  • 500002011

MAN

  • N2509999114
  • 84521019017
  • 84521016017
  • 84.52101.6017
  • N2.50999-9114
  • 84.52101-9017
  • 84.52101-6017

MERCEDES BENZ

  • A0034313806
  • A0034313606
  • A0024318706
  • A0024315206
  • A0024314606
  • A0024311506
  • 0034313806
  • 0034313606
  • 003.431.3806
  • 003.431.38.06
  • 003.431.3606
  • 003.431.36.06
  • 003 431 3806
  • 003 431 3606
  • 0024318706
  • 0024315206
  • 0024314606
  • 002.431.8706
  • 002.431.87.06
  • 002.431.5206
  • 002.431.52.06
  • 002.431.4606
  • 002.431.46.06
  • 002 431 8706
  • 002 431 5206
  • 002 431 4606
  • 003 431 38 06
  • 003 431 36 06
  • 002 431 87 06
  • 002 431 52 06
  • 002 431 46 06
  • 002 431 15 06

NEOPLAN

  • 1102733544131
  • 1102733544130
  • 1102732544114
  • 110273201

RENAULT TRUCKS

  • 5021170478

SCANIA

  • 1935691

STEYR

  • 99100360090

TEREX

  • 00024212

VAN HOOL

  • 637214100

WABCO

  • 9753034740
  • 975.303.474.0
  • 975 303 474 0

Related Products

Repair Kits

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAF
FAUN
IRISBUS
IVECO
MAN
MERCEDES BENZ
NEOPLAN
RENAULT TRUCKS
SCANIA
STEYR
TEREX
VAN HOOL
WABCO

FAQ

What is the function of this unloader valve?
The valve manages air pressure within the brake system by automatically releasing air at a specific threshold to prevent over-pressurization.
Which vehicle brands is this part compatible with?
This specific component is designed to be compatible with Irisbus vehicles and their respective pneumatic brake systems.
What are the technical port specifications?
The unit is equipped with M22x1.5 ports (Port 1 and Port 21) and M12x1.5 ports (Port 4, Port 22, and Port 23) for precise connection.
How is the operating pressure defined?
The device operates with a specific cut-out pressure range of 8.1 BAR / 0.2 BAR to ensure accurate air management.
What are the OE reference numbers of this part?
301.01.0002 directly replaces Irisbus OE number U403004451.