This tankless water heater service valve kit bundles everything needed for a proper installation in one box: two 3/4-inch NPT hot and cold isolation valves, a pressure relief valve rated at 150 PSI and 205,000 BTU, and thread seal tape for a leak-free connection. Built from lead-free brass with SUS304 stainless steel components, the valves resist corrosion while standing up to a working pressure rating of 500 WOG, so the system stays reliable through repeated on-off cycles for maintenance or descaling. The 3/4-inch NPT connections match most tankless water heaters, keeping installation straightforward without hunting for adapters. Having isolation valves in place means future flushing or servicing won't require draining or disconnecting the whole supply line. At 2.93 pounds, the kit is substantial enough to feel durable while remaining easy to handle during installation in bathrooms, boiler rooms, or kitchens.