__37488.1750699189.jpg?c=2 "277863 foot valve for trucks and buses, single circuit floor-mounted brake valve with 1/2\" NPT ports, E-2/E-3 type design")
Description
277863 FOOT VALVE – E-2/E-3 TYPE, FLOOR MOUNT, SINGLE CIRCUIT
PART NUMBER(S):
Fleet Products: 277863-G
OE: 277863, E-2, E-3
Automann: 277863X
DESCRIPTION:
Model: E-2/E-3 Foot Valve (Single Circuit)
Vehicles: Universal fitment for truck, trailer, and bus air brake systems
• Function: Foot-operated service brake valve for smaller systems requiring single-circuit air modulation
• Actuation Type: Mechanical pedal (modulates delivery pressure proportional to pedal force)
• Supply Ports: (2) 1/2" NPT
• Delivery Ports: (4) 1/2" NPT
• Auxiliary Ports: (2) 1/4" NPT (for gauges/sensors)
• Mounting Bolt Pattern: 3-hole, 5/16"-18 UNC-3B
• Material: Cast aluminum
• Dimensions: Standard compact profile for cab floors
• Weight: ~3.0 lbs (approximate)
• Pressure Range: System rated 0–150 PSI
• Operating Temp Range: -40°F to +200°F (-40°C to +93°C)
• System Fitment: Directly compatible with air brake configurations on vocational trucks, buses, and select trailers
• Compliance: Meets all FMVSS-121 requirements for air brake modulation
Applications:
Used widely in air brake systems across vocational trucks, school buses, and intercity transit vehicles. The 277863 foot valve offers precise, responsive pedal-controlled brake application in systems requiring single-circuit logic. Often found in older vehicles or niche configurations where tandem-valve systems are unnecessary.
CROSS-REFERENCE(S):
277863, 277863-G, 277863X, 277863RX, E-2, E-3, MBI277863X, lik277863x, MBI 277863X, KN22100, KN22100X, KN22100N, 277863RX, BEN-277863, BW277863, BX229501, R955277863N, RKN22100, TDAR955277863N, EM36290, LFV-3629, 3629, 36290, 034038, 170.277863, AM170277863, 20-QE-369, 745-277863, 745-277863N, 3130864, 428-186-R, 428186R, BX277863, BX277863N, ZAC277863, 1S-3581, 2R-0617, 4D-2287, 4K-5015, 4V-4154, 5K-0354, 7D-8075, 8V-5172, 9K-2258, 14442, TV277863, BER-277863, S-8361, S8361, E-BN277863N, WA229860, RKN22100A 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 securely to floor using 3-bolt pattern and 5/16"-18 UNC fasteners
✔ Ensure delivery and supply ports are plumbed according to schematic and vehicle-specific routing
✔ Auxiliary ports may be used for signal lines, gauges, or diagnostic equipment
✔ Valve must be mounted level for accurate brake modulation
✔ Test valve function post-installation at operating pressure
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