Description
TRACTOR PROTECTION VALVE – 279000-G
PART NUMBER(S):
Fleet Products: 279000-G | Replaces OE: Bendix 279000, 280830, 288906C91 | Automann 5396-279000
DESCRIPTION:
Model: Tractor Protection Valve (TPV3, 3-Port)
Vehicles: Universal fitment for heavy-duty tractor air brake systems
• Type: Tractor protection valve (two-line, non-automatic)
• Application: Tractor/trailer air brake systems
• Tractor Service Port: 3/8 in NPT
• Tractor Emergency Port: 1/4 in NPT
• Trailer Service Port: 1/2 in NPT
• Trailer Emergency Port: 1/2 in NPT
• Crack Pressure: 45-60 PSI
• Operating Range: 20-45 PSI functional closing range
• Actuation: Pneumatic, spring and diaphragm operated
• Mounting: Rear cab bolt-on, 2-hole flange
• Performance: Automatic trailer air shutoff during line failure or breakaway
• Features: Protects tractor air system integrity, leak-resistant construction, compatible with dash-mounted control valves
• Compatibility: Replacement for KN34060 and KN34060X valves
Applications:
This tractor protection valve is a critical safety component in the air brake system of Class 7 and 8 trucks. Mounted at the rear of the cab, it prevents trailer air failure from compromising the tractor's air supply. Ideal for use in multi-trailer fleets, long-haul trucking, and operations requiring FMVSS-compliant air management. Compatible with standard trailer control dash valves.
CROSS-REFERENCE(S):
08600, 110747, 110748, 12354, 170.KN27900, 20-QE-2101, 213-910-R, 288-906-C, 300479EE, 30905, 320052, 39300586, 401223, 46806, 5396-KN27900, 80-1001, A279000, AC67930, AF279000, AV279000, AVA279000, BB279000N, BNS279000N, E-BN27900, EMDKN27900X, EM40752, JNY0861, KN27900, KN27900B, KN27900C, KN27900D, KN27900E, KN27900F, KN27900-G, KN27900G, KN27900H, KN27900J, KN27900K, KN27900L, KN27900M, KN27900N, KN27900P, KN27900Q, KN27900R, KN27900S, KN27900T, KN27900U, KN27900V, KN27900W, KN27900X, KN27900Y, KN27900Z, MID279000, MID279000B, MID279000C, MID279000D, MID279000E, MID279000F, MID279000G, MID279000X, MIDKN27900, N4304, N4304AD, N4304AE, N4304AG, N4304AK, N4304BA, OR279000, PL-279000, RB-279000, S-8932, S8666, TPV3, U55 279000, WA279000, WAKN27900
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:
✔ Mount valve in upright orientation using 2-bolt flange
✔ Ensure correct threading and tight sealing at all five NPT ports
✔ Follow tractor manufacturer’s routing for service/emergency lines
✔ Verify full cut-off function between 20–45 PSI system loss
✔ Valve must be used with dash-mounted trailer air control valves
✔ Do not install inverted or with ports unsealed
✔ After installation, verify full function by isolating trailer and observing shut-off
Warranty Information
