Tankless isolation valve kit, use to isolate a tankless water heater for service & are required in most installations, includes: two 3/4" female thread & one 1/4" turn operation ball valves, 1 connects to cold water inlet & 1 valve connects to hot water outlet, each valve includes a side inlet ball valve with 3/4" male hose thread connection, low lead california compliant, 600 lb wog rating, non-shock, ab1953 certified.