Navien 3 Way Valve Tool

Tool to manually actuate the 3 way valve commonly found in Navien combi boilers. Use a 3/8" socket wrench & extension to use. Must remove the motor first (2 screws).

The 3 way valves in these heaters control hot water flow (between Space Heating [SH] and Domestic Hot Water [DHW]). If your space heating loop OR hot water to your home don't work it's probably that the motor that actuates this valve is smoked. Tool can be used to manually actuate valve to send hot water to the other loop. This is useful if the motor fails with water directed to the SH loop meaning you can't take hot showers (no DHW supply).

Specifically used this on a Navien NCB 190/80H to divert hot water back to the DHW supply instead of the SH supply while we waited on a replacement 3 way valve assembly to arrive.