Remanufactured Fast Air and Balancing (FAB) Relay Valve, Speedup or fast air relay. Used on converter dollies and long wheel base towing trailers to speed the tractor control signal to the rear trailer(s) service brakes. Cover may be rotated without affecting performance or warranty. Repair Kit use part number RN10HT.

Product Features:

• Remanufactured parts are completely disassembled and wearable parts replaced providing longer life than rebuilt parts
• ISO 9001 and MERA member certifying repeatable processes
• Remanufactured in the USA