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Bendix · Air System
286500N
In stock · ships from Knoxville
The Bendix PR-4 pressure protection valve (part number 286500N) is a critical component in heavy-duty air brake systems.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Freightliner
Other applications
Freightliner
Other applications
This pressure protection valve is not limited to a specific vehicle model; it is a standard air system component installed wherever a fixed 85 psi closing pressure with 1/4 NPT ports is needed.
Part data verified against 5 catalog sources
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Its role is to preserve air pressure in the primary reservoir by closing off the secondary circuit if pressure drops to 85 psi, ensuring that the most important braking functions always have priority air. This non-adjustable, fixed-pressure valve uses 1/4-inch NPT ports and is designed to withstand extreme temperatures. A failing valve may cause the compressor to run excessively or the primary brakes to lose pressure, so replacement is necessary if the system no longer isolates leaking accessory circuits correctly.
Part Number: 286500N
PRESSURE PROTECTION VALVE
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside air system
