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The NORITZ ik-wv-200-5-th-s is a 3/4 inch lead-free threaded isolation valve kit in the short configuration, equipped with a male inlet pressure relief valve (PRV) rated for systems up to 200,000 BTU/h. This kit provides controlled shutoff capability on the water supply line serving a tankless water heater or similar hydronic appliance. The lead-free construction meets current plumbing code material requirements. Licensed plumbers and hydronic service technicians install this assembly during new tankless water heater installations or when servicing existing units that require compliant isolation and pressure relief hardware.
This isolation valve kit is designed for use with tankless water heater installations requiring a 3/4 inch threaded connection on the inlet side. The short body profile suits installations where clearance between the unit and the wall or adjacent piping is limited. The integrated PRV supports system pressure management within the rated 200,000 BTU/h capacity range, making it appropriate for residential and light commercial tankless water heater applications.
Designed as an OEM-style isolation valve kit for tankless water heater systems with 3/4 inch threaded water connections rated up to 200,000 BTU/h. Consult the unit installation manual to confirm fitment before installation.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the cold water supply and relieve system pressure before removing or installing any valve components. Use thread sealant or PTFE tape rated for potable water service on all threaded joints. Do not over-tighten threaded fittings, as this can crack valve bodies or distort sealing surfaces.
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