Navien 30022965A NaviCirc Recirculation Valve Kit (Instant Hot Water) copper 45 elbow :contentReference[oaicite:11]{index=11}

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Follow manufacturer installation instructions and local plumbing codes

capable of handling multiple showers and appliances at once

Reference SKU: 6520181-PRV

Size: 4" (grooved ends)

Navien 30022965A NaviCirc Recirculation Valve Kit (Instant Hot Water) copper 45 elbow :contentReference[oaicite:11]{index=11}Navien NaviCirc Recirculation Valve Kit (30022965A) The Navien NaviCirc Kit is a simple retrofit solution that helps deliver hot water faster at the furthest fixture without a dedicated return line. It uses the existing hot and cold water lines (cold line acts as the return), helping reduce water waste while waiting for hot water. Key Benefits Faster hot water at the furthest accessible fixture (ideal for long runs) No dedicated recirculation return