Description
278825-G – SYNCHRO VALVE (1)
PART NUMBER(S):
Fleet Products: 278825-G, 278825 | Replaces OE: Bendix 278825, 278825BXW, 278825N, 278825P, 278825X, 280353 | Automann 170.278825
DESCRIPTION:
Model: SV-1 Synchro Valve
Vehicles: Suitable for trucks, trailers, tractors, buses, and converter dollies using synchronized pneumatic control systems
• Type: Air signal-operated control valve (non-graduating)
• Application: Pneumatic sequencing and delay control systems
• Supply Port: 1/4-18 NPT
• Delivery Port: 1/4-18 NPT
• Control Port: 1/4-18 NPT
• Exhaust Port: 1/8-27 NPT
• Pressure Activation: 42 PSI inlet opening, 28 PSI exhaust opening, 53 PSI inlet opening with constant supply
• Dimensions: 3.00 in H × 3.00 in W
• Mounting: Dual 0.28 in mounting holes
• Material: Cast valve body
• Performance: Operating temperature -40°F to +200°F (-40°C to +93°C)
• Features: Pneumatic sequencing/delay control, automatic controller capability, non-graduating operation for consistent timing
Applications:
Used in commercial vehicle air brake systems to synchronize pneumatic components such as spring brakes, relay valves, or trailer service valves. Enables delayed or staged actuation for optimized brake sequencing in dual-circuit or auxiliary systems. Effective in harsh environments with precision control demands.
CROSS-REFERENCE(S):
20-QE-2102, 25AC01740, 36Z568, 4S6776, 4900010, 49000100, 5549, 55490, 670-S17744, 745-278825N, 745278825N, 76042419, 769434C91, 8068115, 915A27149, 937021, 10130463, 1021045, 13221E7696, 14559, 1473650, 170.278825, 18446, 24903FX, 27108371, 295101, 2952284, 3060528, 3076-278825, 3858514, 3949404, 4820004363029, ACA-44771700, ACE48281, AV278825, BEN-278825, BEN-278825N, BEN278825, BER-278825, BW278825, BW278825N, BW280353, BX278825, BX280353, C4TA2B139A, C5TZ2B139A, D91143, E-BN278825X, EBN278825X, EM55490, FLTFS278825N, H278825, LSV-5549, R955278825, R955278825N, R955278825X, S-17744, S17744, S1826, SM-6947, TDAR955278825N, TLA278825, TR278825, TV278825, TV278825TEC, TWDH278825, VTC-77441, VP1804, ZAC278825
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:
✔ Ensure proper orientation of control, supply, and delivery ports during installation
✔ Verify thread compatibility and torque to OEM specifications (not provided in documentation)
✔ May be used as sequencer or logic control in complex pneumatic systems
✔ Mounting requires two holes of 0.28" diameter
Warranty Information
