Remanufactured Bendix QR-1C CoreFree, Functions as a Quick Release Valve for the emergency side of the spring brakes. Double Check Valve prevents simultaneous application of the emergency side of the spring brakes (Anti-Compounding). Supply and delivery differential is 1 PSI max. KN32041 Valve may also be used for this application. Repair Kit not available. Product Features:Remanufactured parts are completely disassembled and wearable parts replaced providing longer life than rebuilt partsISO 9001 and MERA member certifying repeatable processesRemanufactured in the USA