303.02.0048 4-circuit protection valve
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303.02.0048 4-circuit protection valve — KNORR-BREMSE

303.02.0048

Summary

●Port 1: M22x1,5 ●Port 21: M16x1,5 ●Port 22: M16x1,5 ●Port 23: M16x1,5 ●Port 24: M16x1,5 ●Operating Pressure: 13 BAR ●Opening Pressure 21-24: 6,6 BAR ●Closing Pressure 21-24: 4,5 BAR ●Max Pressure: 20 BAR. Reliable brake system component for heavy commercial vehicles.

EAN Code8683457005273
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Description

The heavy-duty 4-circuit protection valve is a critical component in the pneumatic brake system of heavy commercial vehicles. It ensures the stable distribution of air pressure across multiple circuits, providing essential safety and control during operation. Built with high-strength components, this part is designed to maintain precise pressure regulation even under demanding driving conditions.

303.02.0048 is the OE-equivalent of the KNORR-BREMSE AE 4642 4-circuit protection valve used in IVECO systems. This component is specifically engineered to match the technical requirements of IVECO and KNORR-BREMSE hardware, ensuring seamless integration and system reliability within the pneumatic braking architecture.

For workshop technicians performing maintenance or repairs, this valve features standard port sizes including one M22x1,5 and four M16x1,5 connections. It operates with a maximum pressure of up to 20 BAR and is calibrated with an opening pressure of 6,6 BAR and a closing pressure of 4,5 BAR across all circuits. Regular inspection of the connection seals and port integrity is recommended to maintain optimal braking performance.

Technical Specifications

Port 1M22x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Operating Pressure13 BAR
Opening Pressure 216,6 BAR
Opening Pressure 226,6 BAR
Opening Pressure 236,6 BAR
Opening Pressure 246,6 BAR
Closing Pressure 214,5 BAR
Closing Pressure 224,5 BAR
Closing Pressure 234,5 BAR
Closing Pressure 244,5 BAR
PressureMAX 20 BAR

Other OEMs

IVECO

  • 42530050

KNORR-BREMSE

  • AE 4642
  • AE4642

Related Products

Repair Kits

Vehicles Used

BrandModelEngine
IVECO
KNORR-BREMSE

FAQ

What are the compatible OEM numbers for this part?
This part is compatible with IVECO 42530050 and KNORR-BREMSE AE 4642.
What is the operating pressure specification?
The valve operates at a maximum pressure of 20 BAR with a standard operating pressure of 13 BAR.
Which vehicle brands is this component suitable for?
It is designed for use in heavy commercial vehicle systems from IVECO and compatible with KNORR-BREMSE hardware.
What are the thread sizes for the ports?
The unit features one M22x1,5 port and four M16x1,5 ports.
Does it meet the opening and closing pressure requirements?
Yes, it features an opening pressure of 6,6 BAR and a closing pressure of 4,5 BAR for all four circuits.