Water heater tempering valve installation kit forged DZR brass valve with 18" flex hose connector, integral check valves and two (2) 3/4" propose flexible water heater connectors with an outlet temperature range 86°F to 120°F. The Water Heater Tempering Valve solves the dilemma between maintaining high enough temperatures to prevent bacteria growth and low enough temperatures to prevent scalding. By purchasing an installation kit, installers can quickly connect or disconnect the flexible water lines to system piping. Designed for use with water in residential or commercial residential plumbing, commercial plumbing systems. Refer to specification sheets for additional technical information. All Webstone products are backed by a limited lifetime warranty.