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Sealco · Air System
110338
In stock · ships from Knoxville
This is a relay emergency valve used in heavy-duty truck and trailer air brake systems.
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Verified fitment for 5 applications
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All confirmed applications for this part number.
Other applications
Other applications
Fits vehicles with 'service only' brake chambers. Not for use with spring brake systems.
Part data verified against 5 catalog sources
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It is a non-charging style valve, meaning it works only with 'service only' brake chambers (not spring brakes) and is commonly found on converter dollies, lift axles, and heavy-haul trailers. The valve takes a control signal from the cab to quickly apply the service brakes on the trailer, and it is designed to work in conjunction with a pressure protection valve like the Sealco 110257. You would replace this valve if it is leaking, sticking, or causing slow brake application or release on the affected axle.
Part Number: 110338
VALVE RELAY EMER NON CHRG
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
