Description
KN31010-G PRESSURE PROTECTION VALVE
PART NUMBER(S):
Fleet Products: KN31010-G
OE: KN31010, 90555398, 90555396, 802633
DESCRIPTION:
Model: Inline Pressure Protection Valve
Vehicles: General application in truck and trailer air brake systems
• Function: Protects air brake system by isolating accessories until system pressure reaches operating level
• Supply Port: 1 × 1/4" NPT (female)
• Delivery Port: 1 × 1/4" NPT (female)
• Opening Pressure: 95 PSI (some sources indicate 102 PSI)
• Closing Pressure: 90 PSI (some sources indicate 88 PSI)
• Mounting: Inline, thread-to-thread
• Weight: Approx. 0.4 lbs
• Dimensions: 4" × 3" × 3"
• Design: Non-adjustable preset valve
• Material: OEM-grade metal construction
• Compliance: Meets or exceeds OEM fit/form/function for multiple HD truck platforms
Applications:
Used to safeguard reservoirs and accessories within heavy-duty truck and trailer air brake systems. Opens only when minimum system pressure is reached, ensuring prioritized filling of primary brake circuits. Interchangeable with many OE and aftermarket valves.
CROSS-REFERENCE(S):
KN31010, KN31010-G, 90555398, MIDKN31010, MID60555398, 802633, 6944856, 20QE19308, 20QE2101P3, 20QE2159R, 1612393, 1612393C91, 625805, 625805C91, 4000206, 110258, 282133, 283038, D5HZ2A435A, N15759DD, 60555398, 90555401, 9348994030, HAL90555398
A cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.
IMPORTANT INSTALLATION NOTES:
✔ Install inline using thread-to-thread mounting orientation
✔ Confirm port sizing (1/4" NPT both sides)
✔ Opening pressure is non-adjustable; verify system compatibility
✔ For use only in accessory protection—not for direct brake line use
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Warranty Information
