IK-WV-300-1-SW-LF Noritz 1" Lead-Free Tankless Water Heater Isolation Valve Kit (Sweat)The IK-WV-300-1-SW lead free tankless isolation kit with pressure relief valve (sweat) is assembled to make things easier for you. Simplify your installation, operations and maintenance, as this kit replaces fittings and connections used in typical tankless water heater installations. Within the kit is a 500,000 BTU pressure relief valve included to unsure safety during installation. Begin your installation off right, knowing no additional adapters are needed for the valve, and that the large handled design will enable easy service through the life of your tankless water heater system. Compatible with NC380 and NH systems.Isolation Valve: Used to isolate your tankless water heater from the rest of your plumbing system, the isolation valve is essential to the operations and maintenance of your system. Paired with the included pressure relief valve, which protects you and the system from excessive pressure, the IK-WV-300-1-SW-LF kit has thought of everything, so you don't have to.Includes pressure relief valveSimple installationNo additional adapter needed for PRVEasy to serviceFor 1" connectionsLead Free