
Image is for illustration purposes only. Actual part may vary.
170.DC4474
A double check valve (also called a two-way check valve) that accepts air from two separate sources and delivers the higher-pressure signal to a single outlet while preventing backflow between the sources. It is commonly used in heavy-duty truck air brake systems to supply the trailer hand control valve from both the primary and secondary circuits. This Automann part is an aftermarket equivalent of the Freightliner/Norgren double check valve AI38000404474.
Universal fitment based on port configuration and function. Verify that the supply port (1/8" NPT male) and delivery ports (two 1/4" push-to-connect) match your air line requirements.
Part Number: 170.DC4474
DOUBLE CHECK VALVE
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system