The Lead-Free Isolation Valve Adapter Kit allows repositioning of the pressure relief valve for Recess Box, Pipe Cover, and installations in tight spaces. For use with IK-WV-7-TH-LF, IK-WV-7-SW-LF, IK-WV-8-TH-LF or IK-WV-8-SW-LF Isolator Valve Kit in NR66, NR71, NR98, NRC111, NC199, NCC199, NR111 and NC250 series tankless water heaters.