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Bendix · Air System
278614
In stock · ships from Knoxville
The Bendix 278614 is a DC-4 double check valve for heavy-duty air brake systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 3 applications
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All confirmed applications for this part number.
Other applications
Other applications
Fits any air brake application that uses a DC-4 style double check valve with 3/8-18 NPT female ports. Confirm physical dimensions and port configuration match the existing valve before ordering.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 13 of 13.
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It uses an internal shuttle to automatically select the higher-pressure air supply from two inputs and route it to a single delivery line, sealing off the lower-pressure side to prevent backflow. This valve is essential for consistent brake or auxiliary air performance, and it is typically replaced when pressure bleed-through, leakage, or erratic brake response occurs.
Part Number: 278614
DOUBLE CHECK VALVE
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside air system
