Description
280758-G – INVERSION VALVE, 45–60 PSI FOR TRAILER PARKING BRAKE SYSTEMS
PART NUMBER(S):
Fleet Products: 280758-G | OE: 280758, 280758N |
DESCRIPTION:
Model: TR-3 Inversion Valve
Vehicles: Suitable for trailer emergency or parking brake systems
• Valve Type: TR-3 air inversion valve
• Primary Function: Modulates air flow to spring brake actuators in case of primary air system failure
• Supply Port: 1/4"-18 NPT
• Delivery Port: 1/4"-18 NPT
• Control Port: 1/8"-27 NPT
• Exhaust Port: 1.5" with dust shield (varies by application)
• Activation Pressure (Common Supply/Control):
• Inlet Opens: 45 PSI (descending)
• Exhaust Opens: 60 PSI (ascending)
• Activation Pressure (Constant Supply/Variable Control):
• Inlet Opens: 30 PSI
• Mounting: 2 × 0.280" (9/32") mounting holes
• Temperature Range: -40°F to 200°F (-40°C to 93°C)
• Dimensions: Width 3", Height 2"
• System Type: Normally open, closes when control pressure is present
• Construction: compliant with OE Bendix TR-3 standard
• Weight: 0.57 lbs (0.26 kg)
• Application Use: Primarily used in trailers and select Mack applications requiring 45–60 PSI modulated spring brake engagement
Applications:
Designed for air brake systems on trailers and vocational vehicles that require air inversion logic. Used to control emergency or parking brake actuation based on air system integrity. Engineered to replace Bendix TR-3 style valves with identical port configuration and pressure response.
CROSS-REFERENCE(S):
060-280758N, 23636, 2530000289779, 280758, 280758B1, 280758BXW, 280758N, 280758X, 280773, 326V001, 36Z1406, 3902813, 4L293, 49000229, 550100, 664638C91, 689174, 6D1039, 70689104, 745-280758N, 745280758, 745280758N, 80758, 8084521, 85102791, 86883026, 87M1613, AV280758, BAN280758N, BBH-280758, BBH280758, BE280758, BEN280758N, BETR3, BH280758, BP280758, BW280758, BW280758N, BW280758X, BWBW280758, BWR280758, BX280758, BX280758N, BX280758X, BXR280758, BXR280758X, BXTR3, BXX280758, G3902813, MBW004308, MBW280758, MSBW280758, OR280758X, P280758, R280758, R280758X, R955280758X, TV280758, TWDBEN280758N, X280758, X3902813
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 with two 9/32" (0.280") bolts
✔ Use approved thread sealant on all NPT ports
✔ Ensure correct pressure setup per air system configuration (common or constant supply)
✔ Always replace with exact TR-3 spec valve in spring brake control systems
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Warranty Information
