The TRV or Temperature Management Valve (Dump Valve) allows for a small amount of water to be physically released (dumped) from the UV system to allow for cooling of the water. This is a fully automatic process that dumps water when the water inside the UV reactor reaches a preset temperature. This valve can be used in applications of extended “no flow” conditions, or when the temperature of treated water is of a critical nature. The TRV comes complete with 10’ of drain line and is designed to use with 1/2" FNPT. This valve is available in three additional pipe sizes of 3/4” , 1", and 1 1/2” FNPT.