Description
KN34070-G – TRACTOR PROTECTION VALVE
PART NUMBER(S):
Fleet Products: KN34070-G | Replaces OE: Bendix KN34000, KN34030, KN34040, KN34040A, KN34070, KN34070N, KN34070X | Automann FSKN34070X
DESCRIPTION:
Model: Tractor Protection Valve (Three-line, no quick release)
Vehicles: Compatible with tractors using PP-7 or MV-3 dash valves
• Type: Tractor protection valve (three-line automatic, no quick release)
• Application: Tractor/trailer air brake systems
• Tractor Control Port: 3/8 in NPT
• Trailer Service Port: 1/2 in NPT
• Trailer Emergency Port: 1/2 in NPT
• Reservoir Port: 3/8 in NPT
• Dash Valve Port: 1/4 in NPT
• Actuation: Pneumatic, automatic
• Mounting: Behind cab or chassis rail
• Material: Aluminum body with precision-cast internals
• Performance: Service line opening pressure approx. 45 PSI, shut-off pressure 20 ± 5 PSI, operating temperature -40°F to +200°F (-40°C to +93°C)
• Features: Tractor air system protection, trailer isolation during breakaway, no quick-release function
• Compatibility: Bendix TP-2, TP-3, TP-3DC, TP-5 replacement applications
Applications:
Used in tractor air brake systems to isolate and protect the tractor’s air supply when the trailer is disconnected or an air line fails. Works in tandem with PP-7 or MV-3 dash valves. Commonly mounted behind the cab and integrated into trailer air supply/service control.
CROSS-REFERENCE(S):
10080G, 10130260, 1017506, 138962, 14109F, 14109FX, 16090, 176825R91, 176826R91, 180217, 184970, 20014, 20QE19018, 20QE335, 20QE355, 206200, 211205H1, 218869R91, 227661, 227662, 227672, 227801, 227932, 228276, 25E0645, 276160, 276161, 283090, 3212393R91, 3213493R91, 323780, 355439C91, 355439C92, 360423C91, 360423C92, 36Z950D1, 408431C91, 445177R91, 445177R92, 479191C91, 481587, 53700, 633354, 633418, 680502R91, 681698R91, 70180217, 7650G, 767653011486, 77S812, 788990C91, 7B6186, 865755R91, 865755R92, 866748R91, 866784R92, 87427R92, 874727R91, 875691R91, 875691R92, 875891R91, 98005598, 997072R91, 997072R92, 18A2146, A15207, A24316, AC24912-001, B9Q2951A, CTYCB18718A, G45431, MBW004249, N20952B, N30033D, N30033G, N30073DA, N30073GC, N30073GD, N30300, SV8047, TYCB22525A, XC332865, Y633354
A cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data. Some changes in air line plumbing may be required.
IMPORTANT INSTALLATION NOTES:
✔ Install behind cab on tractor chassis rail
✔ Ensure correct orientation of control and service/emergency ports
✔ Confirm compatibility with PP-7 or MV-3 dash valves
✔ Not to be used in systems requiring quick release
✔ Follow manufacturer plumbing diagram to ensure correct isolation and protection function
Warranty Information
