Description
278614-G - DC-4 DOUBLE CHECK VALVE - 3 PORT
PART NUMBER(S):
Fleet Products: 278614-G | Replaces OE: Bendix: 278614, 283321, 286414, 287181, 287628 | Automann: 170.278614 | Haldex: KN25060, KN25061, N20954A, 90054138 | International: 764368-C92 | Ford: D5TA-2K119-AA | White: 72404-0001 | Volvo: 3081438, 641564 | Mack: 20-QE-283-R, 20QE2222R, 745-278614N | Caterpillar: 2R-0619 | Velvac: 034062 | Meritor: R955278614N | Euclid: E-BN278614N | Tectran: 14557, TV278614 | Tramec Sloan: 401171 | PAI: EM40670
DESCRIPTION:
Model: Bendix DC-4 Double Check Valve
Vehicles: Heavy-duty trucks and trailers using compatible dual-source pneumatic circuits
• Valve Type: Shuttle-operated double check valve
• Supply Ports: Two 3/8"-18 NPT female
• Delivery Port: One 3/8"-18 NPT female
• Mounting Hole Diameter: 11/32"
• Mounting Hole Distance: 2-27/32"
• Mounting: Horizontal orientation
• Actuation: Pneumatic pressure-operated shuttle
• Operating Temperature: -40°F to 200°F (-40°C to 93°C)
• Function: Selects the higher of two pressure sources
• Backflow Protection: Isolates the lower-pressure source
Applications:
Designed for truck and trailer pneumatic systems where two independent air sources control one common circuit. The internal shuttle directs the higher pressure to the delivery port while preventing air from feeding back into the lower-pressure source.
CROSS-REFERENCE(S):
278614G, 278614N, 278614NP, 278614P, 278614BXW, 170.283321, ACA-09620700, ACA-0962A700, 030031, 30031, 12267073, 4820-00-728-7467, 20QE22222R, 2257FX, 34062, 4067, 40670, 764-368-C, 9220646, AM170278614, BA269GRP, BAN278614, BEN-278614, BEN-278614N, BEN278614, BER-278614, BW 278614, BW 283321N, BW-278614N, BW278614, BW278614N, BW283321, BW286414, BW287181, BW287628, BX278614, BX278614N, BX283321, BX286414, BX287181, BX287628, D5TA2K119AA, EBN278614N, FC278614, FLTBV614, KN-25060, LCV-4067, MBW278614, MIDKN25061, R955278614, RKN25060, S-A269, SA269, SMR278614N, TDAR955278614N, US31-1032, ZAC278614, RB-278614, 15507-BCV278614, 229521
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 all three ports are 3/8"-18 NPT female.
✔ Mount horizontally to support proper shuttle movement.
✔ Connect both supply sources and the delivery line according to the pneumatic schematic.
✔ Apply air-system-compatible sealant without allowing sealant inside the valve.
✔ Test each supply separately for correct pressure selection, no backflow, and no leakage.
Warranty Information
