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PDC · Air System
28601P
In stock · ships from Knoxville
This is a full-function trailer valve (FF2) used in heavy-duty air brake systems on semi-trailers.
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Verified fitment for 3 applications
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All confirmed applications for this part number.
Other applications
Other applications
Commonly used as a replacement for Haldex KN28601 and Midland N4304 series valves. Fits any trailer plumbed for an FF2-style valve.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 11 of 11.
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It combines the functions of controlling both service and spring (parking) brakes in a single unit, with built-in pressure protection and anti-compounding safety features. The valve ensures that the service brakes have priority over the spring brakes, so there is always enough air pressure to stop the vehicle. Replace this valve if you notice air leaks, slow brake release, or the parking brakes not holding properly.
Part Number: 28601P
1/2 FFS (FULL FUNCTION VALVE)
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
