Description
280809-G - DC-4 DOUBLE CHECK VALVE - 4 PORT, HORIZONTAL MOUNT
PART NUMBER(S):
Fleet Products: 280809-G (New) | Replaces OE: Bendix: 280809, 109227, 287626, 287627 | Automann: 170.280809 | Haldex: KN25110 | Kenworth: K295-141 | Navistar: 422950C91 | Mack: 745-280809 | Volvo: 3081430, 724040002 | White: 72404-0002 | Meritor: R955280809N | Euclid: E-BN280809N | Freightliner: BW280809 | Dayton Parts: AV280809 | PAI: EM40710 | Tectran: 14566, TV280809 | Torque: TR280809
DESCRIPTION:
Model: Bendix DC-4 Double Check Valve
Vehicles: Heavy-duty trucks, trailers, and buses using compatible dual-source pneumatic circuits
• Valve Type: Shuttle-operated double check valve
• Supply Ports: One 3/8"-18 NPT male, one 3/8"-18 NPT female
• Delivery Ports: Two 3/8"-18 NPT female
• Mounting: Horizontal orientation
• Mounting Hole Distance: 3.00"
• Body Material: Die-cast zinc
• Operating Temperature: -40°F to 200°F (-40°C to 93°C)
• Internal Design: Pressure-operated shuttle disc
• Function: Selects the higher of two pressure sources
• Backflow Protection: Isolates the lower-pressure source
Applications:
Designed for truck, trailer, and bus pneumatic systems where two independent air sources control a common circuit. The internal shuttle directs the higher pressure to both delivery ports while preventing air from feeding back into the lower-pressure source.
CROSS-REFERENCE(S):
280809N, 280809BXW, 280809P, 170280809, AM170280809, KN25110N, K295141, K029547, 422-950-C, 422950C, 745280809, 745-280809N, 745280809N, R955280809X, 3081430, 744040002, 72404-0002, 724040002, 4071, LCV-4071, AV278597, US31-1113, BHV280809, BNS280809N, S-16922, S16922, 9D0338, 25002200164, 802127, TLA280809, ZAC280809, BAN280809, BAN280809N, 116386, SF05963978, SF5963978, 2530004830834, 03902814, 3902814, RKN25110, BER-280809, K280809, 5963978, B16922GRP, BEN-280809, BEN-280809N, BEN-230809N, BW109227, BW280809N, BW287626, BW287627, BX109227, BX280809, BX280809N, BX287626, BX287627
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Confirm the male supply, female supply, and two delivery ports are 3/8"-18 NPT.
✔ Mount horizontally to support proper shuttle movement.
✔ Connect both pressure sources and delivery circuits according to the pneumatic schematic.
✔ Follow the fitting manufacturer's sealing requirements for all NPT connections.
✔ Test each supply separately for correct pressure selection, no backflow, and no leakage.
Warranty Information
