Description
KN30200-G - EMERGENCY RELAY VALVE (NON-CHARGING TYPE)
PART NUMBER(S):
Fleet Products: KN30200-G | Replaces OE: Haldex: KN30200, KN30200N, KN30200X, N4301BA, N4301AC | Meritor: R955KN30200X
DESCRIPTION:
Model: Haldex KN30200 Emergency Relay Valve - Non-Charging Type
Vehicles: Pre-FMVSS 121 trailers, converter dollies, and exempt trailer brake systems
• Service Inlet Port: One 3/8" NPT
• Emergency Inlet Port: One 3/8" NPT
• Delivery Ports: Four 3/8" NPT
• Auxiliary Reservoir Port: One 1/2" NPT, plugged
• Crack Pressure: 3.0 PSI
• Mounting: Standard bracket mount
• Function: Controls trailer emergency brake application without charging the emergency line
• Cover: Rotatable without affecting valve operation
Applications:
Designed for older trailers, converter dollies, and exempt brake systems requiring a non-charging emergency relay valve. It is typically replaced when emergency brake application becomes delayed, delivery pressure is inconsistent, or the valve develops internal or external air leakage.
CROSS-REFERENCE(S):
KN30200G, 530781, 3217-KN30200, 8235R955KN30200X, MDKN30200X, R955KN30200XRI, TDAR955KN30200X
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Use only in approved non-charging emergency relay systems on exempt trailers or converter dollies.
✔ Confirm the two 3/8" inlet ports, four 3/8" delivery ports, and plugged 1/2" reservoir port.
✔ Keep the auxiliary reservoir port plugged unless the approved system diagram requires its use.
✔ Verify the mounting bracket and air-line routing before installation.
✔ Charge and leak-test the system, then verify emergency brake application and release.
Warranty Information
