Tankless Service Valves allow for easy maintenance and installation of your tankless water heater to your household water supply. Regular maintenance for flushing or descaling is a snap with our kit and does not require water to the whole house to be shut-off in the process. Product Highlights EASY TO INSTALL AND MAINTAIN - Compact design makes Service Valves easily accessible and suitable for installation in tight spaces. Enables Descaling and Flushing the appliance with most standard washing machine hose kits. INCLUDES Pressure Relief Valve and FNPT x FNTP Hot & Cold Water Isolation Valves with integrated 1/4 turn drain valve and brass safety caps. HEAVY DUTY FORGED CLEAN BRASS with full port main flow channel & 600 WOG Ball Valves featuring color coded handles for easy identification of hot & cold valves. COMPATIBLE WITH 3/4 inch Rheem, Bosch, Noritz, Rinnai, Takagi, Navien, Stiebel, Atmor, Ecosmart, Eccotemp, Marey Power, Tempra, Trutankless and others Gas or Electric tankless water heaters. Suitable for Residential applications. CERTIFIED NSF/ANSI 61, NSF/ANSI 372, UPC (Uniform Plumbing Code) to meet all federal & state standards for lead levels in drinking water system components. Tankless Water Heater Service Valve Technical Details: Pressure Relief Valve (150 PSI / 200k BTU) Working temperature: 40°F to 180°F 600 WOG Rating Fast 1/4 turn Open or Closed operation Heavy duty forged brass valves with full port main flow channel and chrome-plated brass ball Color coded handles for easy identification of hot and cold valves Large drain port outlets