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Knox Trailers · Air System
110147
In stock · ships from Knoxville
The Sealco 110147 is an air brake relay valve, specifically designed as a spring brake control valve for heavy-duty trucks and trailers.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It mounts directly to an air reservoir and uses a control signal (blue line) to quickly apply or release air pressure to the spring brake chambers, ensuring reliable parking and emergency brake operation. This valve is now obsolete; Sealco recommends replacing it with newer valves such as the 110170 or 110700, which can be installed with minor plumbing changes.
Part Number: 110147
VALVE SEALCO RATIO RELAY
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
