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Haldex KN30400 Emergency Relay Valve with 3.0 PSI Crack Pressure

Manufacturer

Picture for manufacturer Haldex

Part Number

KN30400
6 reviews
Sale Price

$144.22

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Product Details

The Haldex KN30400 Emergency Relay Valve is a critical air brake component designed for commercial truck and trailer applications. This charging-style emergency relay valve features a 3.0 PSI crack pressure and is engineered to deliver reliable performance in emergency air brake activation scenarios.

Key Features:

  • Service inlet: 1/4" NPT threading
  • Emergency inlet: 1/4" NPT
  • Four delivery ports: 3/8" NPT
  • Supply port: 3/4" NPT with nipple, female connection
  • Auxiliary reservoir port: Plugged
  • Crack pressure: 3.0 PSI for consistent response
  • Opening pressure: 4.5 PSI

Applications: Suitable for pre-121 trailers, converter dollies, and exempt trailers. The valve provides reliable emergency brake control with consistent delivery and response pressures, ensuring safe operation in heavy-duty commercial applications.

OEM Cross-Reference: N4301CB. Also replaces Automann 170KN30400, Freightliner 4194397144, International-Navistar ZZKN30400, Mack 5396-KN30400, Meritor R955KN30400N, and other compatible part numbers. Repair kit part number: RN10HL.

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