303.02.0035 4-circuit protection valve
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303.02.0035 4-circuit protection valve — DAF

303.02.0035

Summary

●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: 6,5 BAR ●Opening Pressure 24: 6,5 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

EAN Code8699031096322
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Description

The heavy-duty 4-circuit protection valve is a critical component within the pneumatic brake system of heavy commercial vehicles. It ensures the proper distribution of air pressure across multiple circuits, maintaining system integrity and safety during operation. This component is engineered with high-strength components to withstand rigorous braking cycles and pressure fluctuations.

303.02.0035 is the OE-equivalent 4-circuit protection valve used in DAF, Scania, and Alexander Dennis vehicles. This part is also compatible with various heavy commercial vehicle systems including Leyland, Neoplan, and VDL. It meets the technical requirements for several OEM numbers such as DAF 0271944A, DAF 0384037R, and WABCO 934 702 381 0.

For workshop technicians performing maintenance or repairs, this valve features specific port dimensions including Port 1 (M22x1,5) and four M16x1,5 ports for the secondary circuits. The opening pressure is set at 6,5 BAR for all circuits to ensure reliable pneumatic response. It is essential to check all port seals and connection points during installation to prevent air leaks in the braking system.

Technical Specifications

Port 1M22x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Opening Pressure 216,5 BAR
Opening Pressure 226,5 BAR
Opening Pressure 236,5 BAR
Opening Pressure 246,5 BAR
Closing Pressure 214,5 BAR
Closing Pressure 224,5 BAR
Closing Pressure 234,5 BAR
Closing Pressure 244,5 BAR

Other OEMs

ALEXANDER DENNIS

  • AB9347023810

DAF

  • 0271944A
  • 0271944R
  • 0384037
  • 0384037A
  • 0384037R
  • 271944

LEYLAND

  • 661690

NEOPLAN

  • 11018615
  • 112230000

SCANIA

  • 307605

VDL

  • 40271944

WABCO

  • 934 702 381 0
  • 934.702.381.0
  • 9347023810

Vehicles Used

BrandModelEngine
ALEXANDER DENNIS
DAF
KENWORTH
LEYLAND
MERITOR
NEOPLAN
PETERBILT
SCANIA
VDL
WABCO

FAQ

What are the technical specifications for the opening pressure?
The opening pressure for all ports (21, 22, 23, and 24) is set at 6,5 BAR to ensure consistent pneumatic performance.
Which vehicle makes are compatible with this part?
This part is compatible with several manufacturers including DAF, Scania, Alexander Dennis, Neoplan, VDL, Leyland, and Kenworth.
Which OEM numbers can be replaced by this component?
It serves as an OE equivalent for DAF 0271944A, DAF 0271944R, DAF 0384037, DAF 0384037A, DAF 0384037R, and WABCO 934 702 381 0.
What are the port sizes for installation?
The main port (Port 1) is M22x1,5 and the four secondary ports (Ports 21-24) are M16x1,5.
Is this part suitable for heavy commercial vehicles?
Yes, it is designed specifically for heavy commercial vehicle brake systems to provide reliable circuit protection.