303.02.0035 4-circuit protection valve
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303.02.0035 4-circuit protection valve - Vaden Original

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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Compatible OEM Codes

  • DAF 271944 0384037R 0384037A 0384037 0271944R 0271944A
  • NEOPLAN 112230000 11018615
  • WABCO 934 702 381 0
  • VDL 40271944
  • SCANIA 307605
  • LEYLAND 661690
  • ALEXANDER DENNIS AB9347023810

Description

A specialized component designed to ensure pneumatic stability within the brake system through controlled pressure regulation. This high-strength component functions as a critical safeguard for the air circuits of heavy commercial vehicles.

The 303.02.0035 is the OE equivalent of the WABCO 9347023810 used in Alexander Dennis, DAF, Leyland, Neoplan, Scania, and VDL systems. This part features one M22x1,5 port and four M16x1,5 ports with a consistent opening pressure of 6,5 BAR and a closing pressure of 4,5 BAR across all circuits. It is engineered to meet the rigorous demands of commercial vehicle pneumatic architectures.

Maintenance technicians should verify the integrity of the connection ports and pressure thresholds during routine service intervals to ensure optimal system response. The precise thread specifications and calibrated pressure points are essential for maintaining stable air supply to the vehicle's braking components.

Regular inspection of the valve's operation helps prevent pneumatic failures in heavy-duty applications. Always cross-reference with existing system specifications to ensure exact compatibility with your vehicle's pneumatic setup.

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

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

LEYLAND

  • 661690

NEOPLAN

  • 112230000
  • 11018615

SCANIA

  • 307605

VDL

  • 40271944

WABCO

  • 9347023810
  • 934.702.381.0
  • 934 702 381 0

Vehicles Used

BrandModelModel TypeEngine
ALEXANDER DENNIS
DAF
LEYLAND
NEOPLAN
SCANIA
VDL
WABCO

FAQ

What are the primary technical specifications for this valve?
The valve features one M22x1,5 port and four M16x1,5 ports. All ports have an opening pressure of 6,5 BAR and a closing pressure of 4,5 BAR.
Which OEM numbers is this product compatible with?
Compatible with AB9347023810, 0271944A, 0271944R, 0384037, 0384037A, 0384037R, 271944, 661690, 11018615, 112230000, 307605, and 40271944.
Can this part be used in heavy commercial vehicles?
Yes, this component is designed for heavy commercial vehicle systems such as those found in DAF and Scania trucks and buses.
What is the function of a 4-circuit protection valve?
It serves to protect different air circuits within the brake system by regulating air pressure and isolating circuits in case of a leak or failure.
Is this part suitable for bus applications?
Yes, it is compatible with several major manufacturers in the bus and heavy vehicle sector including Neoplan and VDL.