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Automann · Air System
170.KN28510
In stock · ships from Knoxville
This is an RG-2 type relay valve used in heavy-duty truck and trailer air brake systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
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All confirmed applications for this part number.
Other applications
Other applications
Fits any vehicle plumbed for an RG2 relay valve with supply (1/2", 3/8" NPT), delivery (3/8" NPT), control (1/4" NPT, 90°), and 5.6 PSI crack pressure. Verify port sizes and crack pressure against your existing valve.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 12 of 12.
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It receives a low-pressure control signal from the foot valve and quickly delivers high-volume air from the supply reservoir directly to the brake chambers, significantly reducing brake lag and improving response time. You replace it when the valve leaks, develops a sticking or lazy response, or fails to deliver consistent pressure, which can cause uneven braking or slow release.
Part Number: 170.KN28510
RG2 RELAY VALVE
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system
